./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 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH --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-9ad7fb2 [2021-11-03 04:06:39,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:06:39,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:06:39,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:06:39,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:06:39,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:06:39,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:06:39,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:06:39,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:06:39,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:06:39,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:06:40,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:06:40,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:06:40,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:06:40,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:06:40,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:06:40,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:06:40,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:06:40,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:06:40,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:06:40,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:06:40,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:06:40,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:06:40,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:06:40,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:06:40,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:06:40,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:06:40,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:06:40,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:06:40,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:06:40,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:06:40,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:06:40,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:06:40,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:06:40,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:06:40,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:06:40,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:06:40,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:06:40,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:06:40,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:06:40,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:06:40,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:06:40,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:06:40,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:06:40,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:06:40,104 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:06:40,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:06:40,105 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:06:40,105 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:06:40,105 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:06:40,105 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:06:40,106 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:06:40,106 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:06:40,106 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:06:40,106 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:06:40,107 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:06:40,107 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:06:40,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:06:40,108 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:06:40,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:06:40,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:06:40,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:06:40,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:06:40,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:06:40,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:06:40,110 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:06:40,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:06:40,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:06:40,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:06:40,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:06:40,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:06:40,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:06:40,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:40,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:06:40,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:06:40,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:06:40,112 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:06:40,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:06:40,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:06:40,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:06:40,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:06:40,113 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_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2021-11-03 04:06:40,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:06:40,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:06:40,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:06:40,414 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:06:40,415 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:06:40,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/pthread/stack_longest-2.i [2021-11-03 04:06:40,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/data/00ae67b28/877a1a080ea446e5a9c24b7faca717e6/FLAG22b509bb8 [2021-11-03 04:06:41,074 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:06:41,075 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/sv-benchmarks/c/pthread/stack_longest-2.i [2021-11-03 04:06:41,093 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/data/00ae67b28/877a1a080ea446e5a9c24b7faca717e6/FLAG22b509bb8 [2021-11-03 04:06:41,331 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/data/00ae67b28/877a1a080ea446e5a9c24b7faca717e6 [2021-11-03 04:06:41,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:06:41,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:06:41,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:41,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:06:41,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:06:41,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:41" (1/1) ... [2021-11-03 04:06:41,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6066841c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:41, skipping insertion in model container [2021-11-03 04:06:41,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:41" (1/1) ... [2021-11-03 04:06:41,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:06:41,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:06:41,939 WARN L228 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_ae1e4945-3598-4fd5-a138-9956eef4a729/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2021-11-03 04:06:41,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:41,977 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:06:42,017 WARN L228 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_ae1e4945-3598-4fd5-a138-9956eef4a729/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2021-11-03 04:06:42,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:42,125 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:06:42,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42 WrapperNode [2021-11-03 04:06:42,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:42,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:06:42,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:06:42,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:06:42,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (1/1) ... [2021-11-03 04:06:42,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (1/1) ... [2021-11-03 04:06:42,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:06:42,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:06:42,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:06:42,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:06:42,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (1/1) ... [2021-11-03 04:06:42,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (1/1) ... [2021-11-03 04:06:42,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (1/1) ... [2021-11-03 04:06:42,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (1/1) ... [2021-11-03 04:06:42,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (1/1) ... [2021-11-03 04:06:42,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (1/1) ... [2021-11-03 04:06:42,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (1/1) ... [2021-11-03 04:06:42,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:06:42,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:06:42,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:06:42,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:06:42,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (1/1) ... [2021-11-03 04:06:42,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:42,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:06:42,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:06:42,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:06:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-11-03 04:06:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-11-03 04:06:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-11-03 04:06:42,318 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-11-03 04:06:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:06:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:06:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:06:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 04:06:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-03 04:06:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:06:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:06:42,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:06:42,320 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-03 04:06:42,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:06:42,801 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-11-03 04:06:42,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:42 BoogieIcfgContainer [2021-11-03 04:06:42,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:06:42,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:06:42,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:06:42,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:06:42,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:41" (1/3) ... [2021-11-03 04:06:42,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76008599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:42, skipping insertion in model container [2021-11-03 04:06:42,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:42" (2/3) ... [2021-11-03 04:06:42,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76008599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:42, skipping insertion in model container [2021-11-03 04:06:42,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:42" (3/3) ... [2021-11-03 04:06:42,821 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2021-11-03 04:06:42,827 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-03 04:06:42,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:06:42,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 04:06:42,827 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-03 04:06:42,894 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,895 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,895 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,895 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,896 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,896 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,896 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,898 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,899 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,899 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,900 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,900 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,901 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,901 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,905 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,906 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,906 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,906 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,907 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,907 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,908 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,908 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,909 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,910 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,910 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,911 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,911 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,912 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,912 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,912 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,912 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,913 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,913 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,913 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,914 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,914 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,914 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,914 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,915 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,915 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,915 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,915 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,916 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,916 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,917 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,917 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,918 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,918 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,918 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,919 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,920 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,920 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,921 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,921 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,921 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,922 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,922 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,922 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,922 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,923 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,923 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,924 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,924 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,924 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,924 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,924 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,925 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,925 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,925 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,926 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,926 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,927 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,927 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,927 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,927 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,928 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,929 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,929 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,930 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,931 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,934 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,935 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,935 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,935 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,935 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,936 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,936 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,937 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,937 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,944 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,945 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,945 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,945 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,945 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,946 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,947 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,947 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,947 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,947 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,948 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,948 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,950 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,950 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,950 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,951 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,951 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,951 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,951 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,952 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,952 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,952 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,952 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,952 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,953 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,953 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,953 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,954 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,954 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,954 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,954 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,954 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,955 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,955 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,955 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,955 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,956 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,957 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,957 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,957 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,957 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,958 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,961 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,961 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,962 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,962 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,962 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,962 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,963 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,963 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,963 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,963 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,964 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,964 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,965 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,965 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,966 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,966 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,967 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,967 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,967 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,969 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,970 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,970 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,970 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,970 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,971 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,971 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,973 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,973 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,973 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,973 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,973 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,974 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,974 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,974 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,974 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,974 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,974 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,975 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,975 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,975 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,975 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,975 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,975 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,976 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,976 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,976 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,976 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,976 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,977 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,977 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,978 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,978 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,978 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,978 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,979 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,979 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,979 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,979 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,979 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,980 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,980 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,980 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,980 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,980 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,980 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,982 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,989 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,991 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:42,991 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,005 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,005 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,006 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,006 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,006 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,006 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,006 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,007 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,007 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,007 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,007 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,007 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,008 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,008 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,008 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,008 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,008 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,008 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,009 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,009 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,009 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,009 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,009 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,010 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,010 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,010 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,013 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,014 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,014 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,014 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,015 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,016 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,016 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,017 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,018 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,018 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,018 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,018 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,019 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,019 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,019 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,023 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,023 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,024 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,024 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,024 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,024 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,024 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,025 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,025 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,025 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,025 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,025 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,025 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,026 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,026 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,026 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,026 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,026 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,027 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,027 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,027 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,027 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,027 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:06:43,043 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-03 04:06:43,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:06:43,114 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 [2021-11-03 04:06:43,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 04:06:43,136 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-03 04:06:43,148 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 148 transitions, 312 flow [2021-11-03 04:06:43,155 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 148 transitions, 312 flow [2021-11-03 04:06:43,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 148 transitions, 312 flow [2021-11-03 04:06:43,284 INFO L129 PetriNetUnfolder]: 10/146 cut-off events. [2021-11-03 04:06:43,285 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-03 04:06:43,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 10/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 331 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 108. Up to 3 conditions per place. [2021-11-03 04:06:43,300 INFO L116 LiptonReduction]: Number of co-enabled transitions 6156 [2021-11-03 04:06:50,831 INFO L131 LiptonReduction]: Checked pairs total: 9279 [2021-11-03 04:06:50,831 INFO L133 LiptonReduction]: Total number of compositions: 137 [2021-11-03 04:06:50,839 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 36 transitions, 88 flow [2021-11-03 04:06:50,884 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:06:50,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:50,899 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:06:50,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:06:50,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:50,909 INFO L85 PathProgramCache]: Analyzing trace with hash 824644591, now seen corresponding path program 1 times [2021-11-03 04:06:50,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:50,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496977581] [2021-11-03 04:06:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:50,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:51,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:51,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496977581] [2021-11-03 04:06:51,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496977581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:06:51,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:06:51,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:06:51,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238891292] [2021-11-03 04:06:51,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:06:51,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:06:51,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:06:51,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:06:51,215 INFO L87 Difference]: Start difference. First operand has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 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) [2021-11-03 04:06:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:51,307 INFO L93 Difference]: Finished difference Result 414 states and 1064 transitions. [2021-11-03 04:06:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:06:51,309 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 [2021-11-03 04:06:51,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:51,333 INFO L225 Difference]: With dead ends: 414 [2021-11-03 04:06:51,334 INFO L226 Difference]: Without dead ends: 396 [2021-11-03 04:06:51,335 INFO L786 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 [2021-11-03 04:06:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-03 04:06:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 372. [2021-11-03 04:06:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 369 states have (on average 2.6856368563685638) internal successors, (991), 371 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 991 transitions. [2021-11-03 04:06:51,409 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 991 transitions. Word has length 6 [2021-11-03 04:06:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:51,410 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 991 transitions. [2021-11-03 04:06:51,410 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) [2021-11-03 04:06:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 991 transitions. [2021-11-03 04:06:51,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:06:51,411 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:51,411 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:06:51,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:06:51,412 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:06:51,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:51,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1613183338, now seen corresponding path program 1 times [2021-11-03 04:06:51,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:51,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771044231] [2021-11-03 04:06:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:51,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:51,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:51,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771044231] [2021-11-03 04:06:51,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771044231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:06:51,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:06:51,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:06:51,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166647824] [2021-11-03 04:06:51,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:06:51,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:06:51,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:06:51,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:06:51,543 INFO L87 Difference]: Start difference. First operand 372 states and 991 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) [2021-11-03 04:06:51,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:51,557 INFO L93 Difference]: Finished difference Result 410 states and 1089 transitions. [2021-11-03 04:06:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:06:51,558 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 [2021-11-03 04:06:51,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:51,562 INFO L225 Difference]: With dead ends: 410 [2021-11-03 04:06:51,562 INFO L226 Difference]: Without dead ends: 410 [2021-11-03 04:06:51,563 INFO L786 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 [2021-11-03 04:06:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-03 04:06:51,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-03 04:06:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 407 states have (on average 2.675675675675676) internal successors, (1089), 409 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1089 transitions. [2021-11-03 04:06:51,598 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1089 transitions. Word has length 10 [2021-11-03 04:06:51,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:51,598 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1089 transitions. [2021-11-03 04:06:51,598 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) [2021-11-03 04:06:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1089 transitions. [2021-11-03 04:06:51,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:06:51,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:51,600 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:06:51,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:06:51,601 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:06:51,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:51,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1956993860, now seen corresponding path program 1 times [2021-11-03 04:06:51,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:51,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826462202] [2021-11-03 04:06:51,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:51,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:51,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:51,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826462202] [2021-11-03 04:06:51,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826462202] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:06:51,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134253106] [2021-11-03 04:06:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:51,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:06:51,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:06:51,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:06:51,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:06:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:51,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:06:51,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:06:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:51,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:06:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:52,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134253106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:06:52,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [799833637] [2021-11-03 04:06:52,102 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:609) 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) [2021-11-03 04:06:52,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:06:52,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2021-11-03 04:06:52,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935781403] [2021-11-03 04:06:52,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:06:52,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:06:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:06:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:06:52,106 INFO L87 Difference]: Start difference. First operand 410 states and 1089 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) [2021-11-03 04:06:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:52,301 INFO L93 Difference]: Finished difference Result 998 states and 2565 transitions. [2021-11-03 04:06:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:06:52,302 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 [2021-11-03 04:06:52,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:52,314 INFO L225 Difference]: With dead ends: 998 [2021-11-03 04:06:52,314 INFO L226 Difference]: Without dead ends: 986 [2021-11-03 04:06:52,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:06:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-03 04:06:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 678. [2021-11-03 04:06:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 675 states have (on average 2.6977777777777776) internal successors, (1821), 677 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:52,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1821 transitions. [2021-11-03 04:06:52,370 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1821 transitions. Word has length 13 [2021-11-03 04:06:52,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:52,371 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 1821 transitions. [2021-11-03 04:06:52,371 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) [2021-11-03 04:06:52,371 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1821 transitions. [2021-11-03 04:06:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:06:52,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:52,380 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:06:52,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:06:52,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:06:52,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:06:52,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1100593852, now seen corresponding path program 1 times [2021-11-03 04:06:52,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:52,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947226946] [2021-11-03 04:06:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:52,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:52,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:52,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947226946] [2021-11-03 04:06:52,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947226946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:06:52,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:06:52,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:06:52,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719427516] [2021-11-03 04:06:52,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:06:52,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:06:52,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:06:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:06:52,644 INFO L87 Difference]: Start difference. First operand 678 states and 1821 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) [2021-11-03 04:06:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:52,660 INFO L93 Difference]: Finished difference Result 300 states and 681 transitions. [2021-11-03 04:06:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:06:52,660 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 [2021-11-03 04:06:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:52,663 INFO L225 Difference]: With dead ends: 300 [2021-11-03 04:06:52,663 INFO L226 Difference]: Without dead ends: 300 [2021-11-03 04:06:52,663 INFO L786 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 [2021-11-03 04:06:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-03 04:06:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 282. [2021-11-03 04:06:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 2.25) internal successors, (630), 281 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 630 transitions. [2021-11-03 04:06:52,674 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 630 transitions. Word has length 16 [2021-11-03 04:06:52,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:52,675 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 630 transitions. [2021-11-03 04:06:52,675 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) [2021-11-03 04:06:52,675 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 630 transitions. [2021-11-03 04:06:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:06:52,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:52,676 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:06:52,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:06:52,677 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:06:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2052870819, now seen corresponding path program 1 times [2021-11-03 04:06:52,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:52,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354238221] [2021-11-03 04:06:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:52,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:52,722 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:52,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354238221] [2021-11-03 04:06:52,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354238221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:06:52,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:06:52,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:06:52,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687251309] [2021-11-03 04:06:52,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:06:52,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:06:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:06:52,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:06:52,724 INFO L87 Difference]: Start difference. First operand 282 states and 630 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) [2021-11-03 04:06:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:52,756 INFO L93 Difference]: Finished difference Result 340 states and 756 transitions. [2021-11-03 04:06:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:06:52,757 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 [2021-11-03 04:06:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:52,760 INFO L225 Difference]: With dead ends: 340 [2021-11-03 04:06:52,760 INFO L226 Difference]: Without dead ends: 340 [2021-11-03 04:06:52,760 INFO L786 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 [2021-11-03 04:06:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-03 04:06:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 284. [2021-11-03 04:06:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 2.2588652482269502) internal successors, (637), 283 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 637 transitions. [2021-11-03 04:06:52,772 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 637 transitions. Word has length 17 [2021-11-03 04:06:52,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:52,773 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 637 transitions. [2021-11-03 04:06:52,773 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) [2021-11-03 04:06:52,773 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 637 transitions. [2021-11-03 04:06:52,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 04:06:52,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:52,805 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:06:52,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:06:52,806 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:06:52,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:52,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1115830441, now seen corresponding path program 1 times [2021-11-03 04:06:52,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:52,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271580477] [2021-11-03 04:06:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:52,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:53,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:53,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271580477] [2021-11-03 04:06:53,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271580477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:06:53,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:06:53,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 04:06:53,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558898661] [2021-11-03 04:06:53,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:06:53,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:06:53,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:06:53,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:06:53,348 INFO L87 Difference]: Start difference. First operand 284 states and 637 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) [2021-11-03 04:06:53,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:53,808 INFO L93 Difference]: Finished difference Result 468 states and 1022 transitions. [2021-11-03 04:06:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:06:53,809 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 [2021-11-03 04:06:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:53,812 INFO L225 Difference]: With dead ends: 468 [2021-11-03 04:06:53,812 INFO L226 Difference]: Without dead ends: 418 [2021-11-03 04:06:53,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:06:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-03 04:06:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 328. [2021-11-03 04:06:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 326 states have (on average 2.2607361963190185) internal successors, (737), 327 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 737 transitions. [2021-11-03 04:06:53,826 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 737 transitions. Word has length 21 [2021-11-03 04:06:53,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:53,827 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 737 transitions. [2021-11-03 04:06:53,827 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) [2021-11-03 04:06:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 737 transitions. [2021-11-03 04:06:53,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 04:06:53,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:53,829 INFO L513 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] [2021-11-03 04:06:53,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:06:53,829 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:06:53,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1341224882, now seen corresponding path program 1 times [2021-11-03 04:06:53,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:53,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859633080] [2021-11-03 04:06:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:53,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:53,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:53,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859633080] [2021-11-03 04:06:53,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859633080] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:06:53,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904967959] [2021-11-03 04:06:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:53,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:06:53,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:06:53,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:06:53,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:06:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:54,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:06:54,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:06:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:06:54,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:06:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:06:54,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904967959] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:06:54,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:06:54,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2021-11-03 04:06:54,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252989949] [2021-11-03 04:06:54,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:06:54,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:06:54,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:06:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:06:54,306 INFO L87 Difference]: Start difference. First operand 328 states and 737 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) [2021-11-03 04:06:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:54,450 INFO L93 Difference]: Finished difference Result 474 states and 1030 transitions. [2021-11-03 04:06:54,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:06:54,451 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 [2021-11-03 04:06:54,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:54,455 INFO L225 Difference]: With dead ends: 474 [2021-11-03 04:06:54,455 INFO L226 Difference]: Without dead ends: 466 [2021-11-03 04:06:54,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:06:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-03 04:06:54,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 380. [2021-11-03 04:06:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 378 states have (on average 2.240740740740741) internal successors, (847), 379 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 847 transitions. [2021-11-03 04:06:54,503 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 847 transitions. Word has length 24 [2021-11-03 04:06:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:54,504 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 847 transitions. [2021-11-03 04:06:54,504 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) [2021-11-03 04:06:54,504 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 847 transitions. [2021-11-03 04:06:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:06:54,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:54,506 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-11-03 04:06:54,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:06:54,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:06:54,732 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:06:54,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:54,733 INFO L85 PathProgramCache]: Analyzing trace with hash -672306972, now seen corresponding path program 2 times [2021-11-03 04:06:54,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:54,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595450469] [2021-11-03 04:06:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:54,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:54,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:54,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595450469] [2021-11-03 04:06:54,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595450469] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:06:54,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918365265] [2021-11-03 04:06:54,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:06:54,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:06:54,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:06:54,844 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:06:54,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:06:55,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-03 04:06:55,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:06:55,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:06:55,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:06:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:55,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:06:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:55,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918365265] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:06:55,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1229173681] [2021-11-03 04:06:55,240 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:609) 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) [2021-11-03 04:06:55,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:06:55,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2021-11-03 04:06:55,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102366250] [2021-11-03 04:06:55,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:06:55,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:06:55,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:06:55,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:06:55,243 INFO L87 Difference]: Start difference. First operand 380 states and 847 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) [2021-11-03 04:06:55,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:55,429 INFO L93 Difference]: Finished difference Result 870 states and 1872 transitions. [2021-11-03 04:06:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:06:55,430 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 [2021-11-03 04:06:55,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:55,436 INFO L225 Difference]: With dead ends: 870 [2021-11-03 04:06:55,436 INFO L226 Difference]: Without dead ends: 870 [2021-11-03 04:06:55,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2021-11-03 04:06:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-11-03 04:06:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 604. [2021-11-03 04:06:55,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 602 states have (on average 2.250830564784053) internal successors, (1355), 603 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1355 transitions. [2021-11-03 04:06:55,461 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1355 transitions. Word has length 27 [2021-11-03 04:06:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:55,461 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 1355 transitions. [2021-11-03 04:06:55,461 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) [2021-11-03 04:06:55,462 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1355 transitions. [2021-11-03 04:06:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:06:55,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:55,463 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:06:55,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:06:55,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-03 04:06:55,692 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:06:55,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:55,692 INFO L85 PathProgramCache]: Analyzing trace with hash 758889652, now seen corresponding path program 2 times [2021-11-03 04:06:55,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:55,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530957538] [2021-11-03 04:06:55,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:55,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:57,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:57,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530957538] [2021-11-03 04:06:57,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530957538] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:06:57,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917051343] [2021-11-03 04:06:57,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:06:57,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:06:57,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:06:57,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:06:57,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:06:57,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-03 04:06:57,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:06:57,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-03 04:06:57,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:06:57,621 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 643 treesize of output 611 [2021-11-03 04:06:58,163 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 [2021-11-03 04:06:58,463 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-03 04:06:58,463 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 71 treesize of output 43 [2021-11-03 04:06:58,971 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 109 treesize of output 45 [2021-11-03 04:07:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:07:26,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:09,574 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 [2021-11-03 04:08:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 3 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:08:09,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917051343] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-03 04:08:09,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:08:09,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18, 13] total 43 [2021-11-03 04:08:09,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660890883] [2021-11-03 04:08:09,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:08:09,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:08:09,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:08:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1751, Unknown=29, NotChecked=0, Total=1980 [2021-11-03 04:08:09,913 INFO L87 Difference]: Start difference. First operand 604 states and 1355 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:13,123 INFO L93 Difference]: Finished difference Result 790 states and 1721 transitions. [2021-11-03 04:10:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 04:10:13,124 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 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 [2021-11-03 04:10:13,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:13,130 INFO L225 Difference]: With dead ends: 790 [2021-11-03 04:10:13,130 INFO L226 Difference]: Without dead ends: 758 [2021-11-03 04:10:13,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 76.3s TimeCoverageRelationStatistics Valid=436, Invalid=3567, Unknown=29, NotChecked=0, Total=4032 [2021-11-03 04:10:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-03 04:10:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 586. [2021-11-03 04:10:13,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 584 states have (on average 2.23972602739726) internal successors, (1308), 585 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1308 transitions. [2021-11-03 04:10:13,159 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1308 transitions. Word has length 28 [2021-11-03 04:10:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:13,160 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 1308 transitions. [2021-11-03 04:10:13,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1308 transitions. [2021-11-03 04:10:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 04:10:13,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:13,165 INFO L513 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] [2021-11-03 04:10:13,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:13,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-03 04:10:13,380 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:10:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash -250054543, now seen corresponding path program 1 times [2021-11-03 04:10:13,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:10:13,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404105025] [2021-11-03 04:10:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:13,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:10:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:14,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:10:14,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404105025] [2021-11-03 04:10:14,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404105025] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:10:14,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477661983] [2021-11-03 04:10:14,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:14,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:10:14,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:14,635 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:10:14,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 04:10:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:14,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-03 04:10:14,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:14,880 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 263 treesize of output 261 [2021-11-03 04:10:15,331 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 [2021-11-03 04:10:16,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:10:16,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-11-03 04:10:16,371 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-03 04:10:16,372 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 [2021-11-03 04:10:17,562 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 [2021-11-03 04:11:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:15,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:18,657 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0.offset| Int) (|v_ULTIMATE.start_main_#t~pre52_39| Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0.base|) |ULTIMATE.start_main_~#id2~0.offset| |v_ULTIMATE.start_main_#t~pre52_39|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 8))) 4294967296) 4294967294))) is different from false [2021-11-03 04:11:26,534 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0.offset| Int) (|v_ULTIMATE.start_main_#t~pre52_39| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0.base|) |ULTIMATE.start_main_~#id2~0.offset| |v_ULTIMATE.start_main_#t~pre52_39|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296)))) is different from false [2021-11-03 04:12:05,379 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0.offset| Int) (t1Thread1of1ForFork1_push_~x Int) (|v_ULTIMATE.start_main_#t~pre52_39| Int)) (not (= (mod (let ((.cse1 (* |c_t1Thread1of1ForFork1_inc_top_#t~post33| 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |c_~#arr~0.offset| .cse1 4) t1Thread1of1ForFork1_push_~x)))) (store .cse0 |c_ULTIMATE.start_main_~#id2~0.base| (store (select .cse0 |c_ULTIMATE.start_main_~#id2~0.base|) |ULTIMATE.start_main_~#id2~0.offset| |v_ULTIMATE.start_main_#t~pre52_39|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| .cse1))) 4294967296) 4294967294))) is different from false [2021-11-03 04:12:07,407 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0.offset| Int) (t1Thread1of1ForFork1_push_~x Int) (|v_ULTIMATE.start_main_#t~pre52_39| Int)) (not (= (mod (let ((.cse1 (* c_~top~0 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |c_~#arr~0.offset| .cse1 4) t1Thread1of1ForFork1_push_~x)))) (store .cse0 |c_ULTIMATE.start_main_~#id2~0.base| (store (select .cse0 |c_ULTIMATE.start_main_~#id2~0.base|) |ULTIMATE.start_main_~#id2~0.offset| |v_ULTIMATE.start_main_#t~pre52_39|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| .cse1))) 4294967296) 4294967294))) is different from false [2021-11-03 04:12:07,409 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:12:07,419 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 1164 treesize of output 1132 [2021-11-03 04:12:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-03 04:12:09,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477661983] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:12:09,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1852769240] [2021-11-03 04:12:09,416 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:609) 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) [2021-11-03 04:12:09,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:12:09,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 20] total 62 [2021-11-03 04:12:09,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442977015] [2021-11-03 04:12:09,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-03 04:12:09,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:12:09,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-03 04:12:09,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=3256, Unknown=49, NotChecked=476, Total=4032 [2021-11-03 04:12:09,421 INFO L87 Difference]: Start difference. First operand 586 states and 1308 transitions. Second operand has 64 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 63 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:12:55,334 WARN L207 SmtUtils]: Spent 8.53 s on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2021-11-03 04:13:36,139 WARN L207 SmtUtils]: Spent 6.23 s on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2021-11-03 04:17:55,644 WARN L207 SmtUtils]: Spent 6.48 s on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2021-11-03 04:18:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:52,276 INFO L93 Difference]: Finished difference Result 3182 states and 6704 transitions. [2021-11-03 04:18:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2021-11-03 04:18:52,276 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 63 states have internal predecessors, (104), 0 states have call successors, (0), 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 [2021-11-03 04:18:52,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:52,300 INFO L225 Difference]: With dead ends: 3182 [2021-11-03 04:18:52,301 INFO L226 Difference]: Without dead ends: 2981 [2021-11-03 04:18:52,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 34 SyntacticMatches, 22 SemanticMatches, 230 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 20592 ImplicationChecksByTransitivity, 483.2s TimeCoverageRelationStatistics Valid=3959, Invalid=47756, Unknown=57, NotChecked=1820, Total=53592 [2021-11-03 04:18:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2021-11-03 04:18:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1216. [2021-11-03 04:18:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 1214 states have (on average 2.440691927512356) internal successors, (2963), 1215 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 2963 transitions. [2021-11-03 04:18:52,395 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 2963 transitions. Word has length 36 [2021-11-03 04:18:52,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:52,396 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 2963 transitions. [2021-11-03 04:18:52,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 63 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 2963 transitions. [2021-11-03 04:18:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 04:18:52,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:52,400 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:52,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:52,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:18:52,616 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:18:52,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:52,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1886231608, now seen corresponding path program 2 times [2021-11-03 04:18:52,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:52,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939724293] [2021-11-03 04:18:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:52,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:18:53,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:53,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939724293] [2021-11-03 04:18:53,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939724293] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:18:53,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573386070] [2021-11-03 04:18:53,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:18:53,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:18:53,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:18:53,575 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:18:53,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 04:18:53,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 04:18:53,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:18:53,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-03 04:18:53,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:53,968 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 105 treesize of output 103 [2021-11-03 04:18:54,373 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 [2021-11-03 04:18:54,650 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-03 04:18:54,651 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 67 treesize of output 42 [2021-11-03 04:18:55,177 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-03 04:18:55,178 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 77 treesize of output 49 [2021-11-03 04:18:56,270 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 109 treesize of output 45 [2021-11-03 04:19:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:19:27,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:19:30,782 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork1_push_#t~ret38_130| Int) (t1Thread1of1ForFork1_push_~x Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base (store (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base) (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |v_t1Thread1of1ForFork1_push_#t~ret38_130| 4)) t1Thread1of1ForFork1_push_~x)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret38_130| c_~top~0))) is different from false [2021-11-03 04:21:12,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2021-11-03 04:21:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 1 times theorem prover too weak. 2 trivial. 2 not checked. [2021-11-03 04:21:12,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573386070] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:21:12,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [495139903] [2021-11-03 04:21:12,929 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$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:609) 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) [2021-11-03 04:21:12,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:21:12,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 55 [2021-11-03 04:21:12,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118544876] [2021-11-03 04:21:12,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-03 04:21:12,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:12,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-03 04:21:12,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2854, Unknown=32, NotChecked=108, Total=3192 [2021-11-03 04:21:12,932 INFO L87 Difference]: Start difference. First operand 1216 states and 2963 transitions. Second operand has 57 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 56 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:15,549 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (* c_~top~0 4))) (let ((.cse7 (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base)) (.cse8 (+ .cse6 (- 4))) (.cse5 (select |c_#memory_int| |c_~#arr~0.base|))) (let ((.cse2 (select .cse5 (+ .cse6 (- 8)))) (.cse4 (select .cse7 .cse8)) (.cse1 (select (store .cse7 (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |c_t1Thread1of1ForFork1_push_#t~ret38| 4)) c_t1Thread1of1ForFork1_push_~x) .cse8)) (.cse3 (select .cse5 .cse6)) (.cse0 (select .cse5 (+ (* |c_t2Thread1of1ForFork0_dec_top_#t~post34| 4) (- 8))))) (and (<= .cse0 799) (<= 0 .cse1) (<= 0 c_t1Thread1of1ForFork1_push_~x) (<= .cse2 799) (= |c_~#arr~0.offset| 0) (not (= c_t1Thread1of1ForFork1_push_~stack.base |c_ULTIMATE.start_main_~#id2~0.base|)) (<= .cse3 799) (<= 0 .cse4) (= c_t1Thread1of1ForFork1_push_~stack.offset 0) (<= 0 .cse2) (<= .cse4 799) (<= .cse1 799) (<= 0 .cse3) (forall ((|v_t1Thread1of1ForFork1_push_#t~ret38_130| Int) (t1Thread1of1ForFork1_push_~x Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base (store (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base) (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |v_t1Thread1of1ForFork1_push_#t~ret38_130| 4)) t1Thread1of1ForFork1_push_~x)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret38_130| c_~top~0))) (not (= |c_~#arr~0.base| |c_ULTIMATE.start_main_~#id2~0.base|)) (<= 0 .cse0) (<= c_t1Thread1of1ForFork1_push_~x 799) (= c_t1Thread1of1ForFork1_push_~stack.base |c_~#arr~0.base|))))) is different from false [2021-11-03 04:21:17,897 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (* c_~top~0 4))) (let ((.cse6 (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base)) (.cse7 (+ .cse5 (- 4))) (.cse4 (select |c_#memory_int| |c_~#arr~0.base|))) (let ((.cse1 (select .cse4 (+ .cse5 (- 8)))) (.cse3 (select .cse6 .cse7)) (.cse0 (select (store .cse6 (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |c_t1Thread1of1ForFork1_push_#t~ret38| 4)) c_t1Thread1of1ForFork1_push_~x) .cse7)) (.cse2 (select .cse4 .cse5))) (and (<= 0 .cse0) (<= 0 c_t1Thread1of1ForFork1_push_~x) (<= .cse1 799) (= |c_~#arr~0.offset| 0) (not (= c_t1Thread1of1ForFork1_push_~stack.base |c_ULTIMATE.start_main_~#id2~0.base|)) (<= .cse2 799) (<= 0 .cse3) (= c_t1Thread1of1ForFork1_push_~stack.offset 0) (<= 0 .cse1) (<= .cse3 799) (<= .cse0 799) (<= 0 .cse2) (forall ((|v_t1Thread1of1ForFork1_push_#t~ret38_130| Int) (t1Thread1of1ForFork1_push_~x Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base (store (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base) (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |v_t1Thread1of1ForFork1_push_#t~ret38_130| 4)) t1Thread1of1ForFork1_push_~x)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret38_130| c_~top~0))) (not (= |c_~#arr~0.base| |c_ULTIMATE.start_main_~#id2~0.base|)) (<= c_t1Thread1of1ForFork1_push_~x 799) (= c_t1Thread1of1ForFork1_push_~stack.base |c_~#arr~0.base|))))) is different from false [2021-11-03 04:21:20,452 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (* c_~top~0 4))) (let ((.cse3 (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base)) (.cse4 (+ .cse5 (- 4)))) (let ((.cse1 (select (select |c_#memory_int| |c_~#arr~0.base|) (+ .cse5 (- 8)))) (.cse2 (select .cse3 .cse4)) (.cse0 (select (store .cse3 (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |c_t1Thread1of1ForFork1_push_#t~ret38| 4)) c_t1Thread1of1ForFork1_push_~x) .cse4))) (and (<= 0 .cse0) (<= 0 c_t1Thread1of1ForFork1_push_~x) (<= .cse1 799) (= |c_~#arr~0.offset| 0) (not (= c_t1Thread1of1ForFork1_push_~stack.base |c_ULTIMATE.start_main_~#id2~0.base|)) (<= 0 .cse2) (= c_t1Thread1of1ForFork1_push_~stack.offset 0) (<= 0 .cse1) (<= .cse2 799) (<= .cse0 799) (forall ((|v_t1Thread1of1ForFork1_push_#t~ret38_130| Int) (t1Thread1of1ForFork1_push_~x Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base (store (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base) (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |v_t1Thread1of1ForFork1_push_#t~ret38_130| 4)) t1Thread1of1ForFork1_push_~x)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret38_130| c_~top~0))) (<= c_t1Thread1of1ForFork1_push_~x 799) (= c_t1Thread1of1ForFork1_push_~stack.base |c_~#arr~0.base|))))) is different from false [2021-11-03 04:21:24,035 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (* c_~top~0 4))) (let ((.cse4 (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base)) (.cse5 (+ .cse3 (- 4)))) (let ((.cse1 (select .cse4 .cse5)) (.cse0 (select (store .cse4 (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |c_t1Thread1of1ForFork1_push_#t~ret38| 4)) c_t1Thread1of1ForFork1_push_~x) .cse5)) (.cse2 (select (select |c_#memory_int| c_t2Thread1of1ForFork0_pop_~stack.base) .cse3))) (and (<= 0 .cse0) (<= 0 c_t1Thread1of1ForFork1_push_~x) (= |c_~#arr~0.offset| 0) (not (= c_t1Thread1of1ForFork1_push_~stack.base |c_ULTIMATE.start_main_~#id2~0.base|)) (<= 0 .cse1) (= c_t1Thread1of1ForFork1_push_~stack.offset 0) (<= .cse1 799) (= c_t2Thread1of1ForFork0_pop_~stack.offset 0) (<= .cse0 799) (<= 0 .cse2) (forall ((|v_t1Thread1of1ForFork1_push_#t~ret38_130| Int) (t1Thread1of1ForFork1_push_~x Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base (store (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base) (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |v_t1Thread1of1ForFork1_push_#t~ret38_130| 4)) t1Thread1of1ForFork1_push_~x)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret38_130| c_~top~0))) (<= c_t1Thread1of1ForFork1_push_~x 799) (= c_t1Thread1of1ForFork1_push_~stack.base |c_~#arr~0.base|) (<= .cse2 799))))) is different from false [2021-11-03 04:21:30,081 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base)) (.cse3 (+ (* c_~top~0 4) (- 4)))) (let ((.cse1 (select .cse2 .cse3)) (.cse0 (select (store .cse2 (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |c_t1Thread1of1ForFork1_push_#t~ret38| 4)) c_t1Thread1of1ForFork1_push_~x) .cse3))) (and (<= 0 .cse0) (<= 0 c_t1Thread1of1ForFork1_push_~x) (= |c_~#arr~0.offset| 0) (not (= c_t1Thread1of1ForFork1_push_~stack.base |c_ULTIMATE.start_main_~#id2~0.base|)) (<= 0 .cse1) (= c_t1Thread1of1ForFork1_push_~stack.offset 0) (<= .cse1 799) (<= .cse0 799) (forall ((|v_t1Thread1of1ForFork1_push_#t~ret38_130| Int) (t1Thread1of1ForFork1_push_~x Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base (store (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base) (+ c_t1Thread1of1ForFork1_push_~stack.offset (* |v_t1Thread1of1ForFork1_push_#t~ret38_130| 4)) t1Thread1of1ForFork1_push_~x)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret38_130| c_~top~0))) (<= c_t1Thread1of1ForFork1_push_~x 799) (= c_t1Thread1of1ForFork1_push_~stack.base |c_~#arr~0.base|)))) is different from false [2021-11-03 04:21:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:30,534 INFO L93 Difference]: Finished difference Result 2865 states and 6787 transitions. [2021-11-03 04:21:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-03 04:21:30,535 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 56 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-03 04:21:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:30,563 INFO L225 Difference]: With dead ends: 2865 [2021-11-03 04:21:30,563 INFO L226 Difference]: Without dead ends: 2865 [2021-11-03 04:21:30,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 153.1s TimeCoverageRelationStatistics Valid=756, Invalid=6203, Unknown=37, NotChecked=1014, Total=8010 [2021-11-03 04:21:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-11-03 04:21:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1714. [2021-11-03 04:21:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1712 states have (on average 2.5882009345794392) internal successors, (4431), 1713 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 4431 transitions. [2021-11-03 04:21:30,657 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 4431 transitions. Word has length 43 [2021-11-03 04:21:30,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:30,658 INFO L470 AbstractCegarLoop]: Abstraction has 1714 states and 4431 transitions. [2021-11-03 04:21:30,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 56 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:30,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 4431 transitions. [2021-11-03 04:21:30,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 04:21:30,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:30,664 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:30,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:30,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-03 04:21:30,880 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:21:30,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash 81697990, now seen corresponding path program 3 times [2021-11-03 04:21:30,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:30,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920365847] [2021-11-03 04:21:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:30,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:21:32,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:32,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920365847] [2021-11-03 04:21:32,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920365847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:21:32,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151857478] [2021-11-03 04:21:32,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:21:32,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:21:32,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:32,060 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:21:32,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1e4945-3598-4fd5-a138-9956eef4a729/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 04:21:32,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:21:32,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:21:32,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-03 04:21:32,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:32,491 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 71 treesize of output 69 [2021-11-03 04:21:32,918 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 [2021-11-03 04:21:33,200 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-03 04:21:33,201 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 67 treesize of output 42 [2021-11-03 04:21:33,780 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-03 04:21:33,780 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 77 treesize of output 49 [2021-11-03 04:21:34,967 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 109 treesize of output 45 [2021-11-03 04:21:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:21:35,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:39,016 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork1_push_#t~ret38_142| Int) (t1Thread1of1ForFork1_push_~x Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base (store (select |c_#memory_int| c_t1Thread1of1ForFork1_push_~stack.base) (+ (* |v_t1Thread1of1ForFork1_push_#t~ret38_142| 4) c_t1Thread1of1ForFork1_push_~stack.offset) t1Thread1of1ForFork1_push_~x)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret38_142| c_~top~0))) is different from false