./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5cca3532c956cbfb3f8d24df68dd431ff61516e63bcc0106c0529c479d6a4ef --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 17:20:46,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 17:20:46,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 17:20:46,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 17:20:46,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 17:20:46,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 17:20:46,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 17:20:46,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 17:20:46,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 17:20:46,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 17:20:46,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 17:20:46,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 17:20:46,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 17:20:46,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 17:20:46,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 17:20:46,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 17:20:46,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 17:20:46,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 17:20:46,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 17:20:46,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 17:20:46,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 17:20:46,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 17:20:46,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 17:20:46,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 17:20:46,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 17:20:46,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 17:20:46,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 17:20:46,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 17:20:46,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 17:20:46,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 17:20:46,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 17:20:46,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 17:20:46,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 17:20:46,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 17:20:46,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 17:20:46,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 17:20:46,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 17:20:46,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 17:20:46,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 17:20:46,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 17:20:46,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 17:20:46,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 17:20:46,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 17:20:46,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 17:20:46,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 17:20:46,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 17:20:46,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 17:20:46,256 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 17:20:46,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 17:20:46,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 17:20:46,257 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 17:20:46,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 17:20:46,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 17:20:46,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 17:20:46,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 17:20:46,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 17:20:46,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 17:20:46,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 17:20:46,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 17:20:46,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 17:20:46,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 17:20:46,260 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 17:20:46,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 17:20:46,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 17:20:46,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 17:20:46,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 17:20:46,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 17:20:46,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 17:20:46,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 17:20:46,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 17:20:46,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 17:20:46,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 17:20:46,263 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 17:20:46,263 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 17:20:46,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 17:20:46,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 17:20:46,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5cca3532c956cbfb3f8d24df68dd431ff61516e63bcc0106c0529c479d6a4ef [2021-12-17 17:20:46,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 17:20:46,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 17:20:46,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 17:20:46,593 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 17:20:46,593 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 17:20:46,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i [2021-12-17 17:20:46,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1cf1ac45/c34328dd62154c5f8c9d1ea1d7a53ef3/FLAGb2ec0aa23 [2021-12-17 17:20:47,177 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 17:20:47,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i [2021-12-17 17:20:47,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1cf1ac45/c34328dd62154c5f8c9d1ea1d7a53ef3/FLAGb2ec0aa23 [2021-12-17 17:20:47,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1cf1ac45/c34328dd62154c5f8c9d1ea1d7a53ef3 [2021-12-17 17:20:47,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 17:20:47,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 17:20:47,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 17:20:47,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 17:20:47,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 17:20:47,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:20:47" (1/1) ... [2021-12-17 17:20:47,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef7caff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:47, skipping insertion in model container [2021-12-17 17:20:47,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:20:47" (1/1) ... [2021-12-17 17:20:47,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 17:20:47,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 17:20:47,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i[23611,23624] [2021-12-17 17:20:48,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 17:20:48,072 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 17:20:48,104 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i[23611,23624] [2021-12-17 17:20:48,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 17:20:48,207 INFO L208 MainTranslator]: Completed translation [2021-12-17 17:20:48,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48 WrapperNode [2021-12-17 17:20:48,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 17:20:48,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 17:20:48,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 17:20:48,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 17:20:48,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (1/1) ... [2021-12-17 17:20:48,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (1/1) ... [2021-12-17 17:20:48,302 INFO L137 Inliner]: procedures = 145, calls = 317, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 519 [2021-12-17 17:20:48,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 17:20:48,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 17:20:48,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 17:20:48,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 17:20:48,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (1/1) ... [2021-12-17 17:20:48,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (1/1) ... [2021-12-17 17:20:48,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (1/1) ... [2021-12-17 17:20:48,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (1/1) ... [2021-12-17 17:20:48,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (1/1) ... [2021-12-17 17:20:48,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (1/1) ... [2021-12-17 17:20:48,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (1/1) ... [2021-12-17 17:20:48,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 17:20:48,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 17:20:48,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 17:20:48,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 17:20:48,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (1/1) ... [2021-12-17 17:20:48,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 17:20:48,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 17:20:48,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 17:20:48,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 17:20:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 17:20:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 17:20:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 17:20:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 17:20:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 17:20:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 17:20:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-17 17:20:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2021-12-17 17:20:48,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2021-12-17 17:20:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2021-12-17 17:20:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2021-12-17 17:20:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-17 17:20:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2021-12-17 17:20:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2021-12-17 17:20:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-17 17:20:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-17 17:20:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 17:20:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-17 17:20:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2021-12-17 17:20:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2021-12-17 17:20:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 17:20:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2021-12-17 17:20:48,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2021-12-17 17:20:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 17:20:48,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 17:20:48,610 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 17:20:48,612 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 17:20:51,447 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 17:20:51,454 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 17:20:51,454 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 17:20:51,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:20:51 BoogieIcfgContainer [2021-12-17 17:20:51,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 17:20:51,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 17:20:51,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 17:20:51,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 17:20:51,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 05:20:47" (1/3) ... [2021-12-17 17:20:51,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c8b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:20:51, skipping insertion in model container [2021-12-17 17:20:51,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:20:48" (2/3) ... [2021-12-17 17:20:51,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c8b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:20:51, skipping insertion in model container [2021-12-17 17:20:51,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:20:51" (3/3) ... [2021-12-17 17:20:51,463 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_time_var_mutex.i [2021-12-17 17:20:51,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 17:20:51,468 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 17:20:51,507 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 17:20:51,512 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=PETRI_NET, 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 [2021-12-17 17:20:51,513 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 17:20:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 95 states have internal predecessors, (126), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-17 17:20:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 17:20:51,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:20:51,543 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:20:51,544 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:20:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:20:51,548 INFO L85 PathProgramCache]: Analyzing trace with hash -5089063, now seen corresponding path program 1 times [2021-12-17 17:20:51,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:20:51,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596284688] [2021-12-17 17:20:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:20:51,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:21:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 17:21:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 17:21:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 17:21:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 17:21:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 17:21:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 17:21:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-17 17:21:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-17 17:21:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 17:21:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 17:21:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 17:21:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 17:21:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 17:21:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 17:21:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 17:21:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 17:21:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 17:21:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 17:21:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 17:21:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-17 17:21:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 17:21:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-17 17:21:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-12-17 17:21:30,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:21:30,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596284688] [2021-12-17 17:21:30,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596284688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:21:30,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:21:30,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:21:30,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370846250] [2021-12-17 17:21:30,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:21:30,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:21:30,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:21:30,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:21:30,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:21:30,697 INFO L87 Difference]: Start difference. First operand has 148 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 95 states have internal predecessors, (126), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-17 17:21:30,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:21:30,799 INFO L93 Difference]: Finished difference Result 298 states and 477 transitions. [2021-12-17 17:21:30,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:21:30,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2021-12-17 17:21:30,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:21:30,812 INFO L225 Difference]: With dead ends: 298 [2021-12-17 17:21:30,812 INFO L226 Difference]: Without dead ends: 148 [2021-12-17 17:21:30,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:21:30,820 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 4 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:21:30,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 416 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:21:30,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-17 17:21:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2021-12-17 17:21:30,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 92 states have internal predecessors, (119), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-17 17:21:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 209 transitions. [2021-12-17 17:21:30,868 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 209 transitions. Word has length 144 [2021-12-17 17:21:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:21:30,869 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 209 transitions. [2021-12-17 17:21:30,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-17 17:21:30,869 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 209 transitions. [2021-12-17 17:21:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-17 17:21:30,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:21:30,874 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:21:30,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 17:21:30,876 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:21:30,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:21:30,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2025126427, now seen corresponding path program 1 times [2021-12-17 17:21:30,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:21:30,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149083047] [2021-12-17 17:21:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:21:30,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:21:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 17:21:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 17:21:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 17:21:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 17:21:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 17:21:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 17:21:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-17 17:21:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 17:21:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 17:21:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 17:21:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 17:21:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 17:21:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 17:21:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 17:21:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 17:21:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 17:21:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 17:21:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 17:21:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-17 17:21:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 17:21:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-17 17:21:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-17 17:21:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-12-17 17:21:38,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:21:38,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149083047] [2021-12-17 17:21:38,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149083047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:21:38,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:21:38,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:21:38,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508669882] [2021-12-17 17:21:38,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:21:38,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:21:38,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:21:38,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:21:38,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:21:38,787 INFO L87 Difference]: Start difference. First operand 145 states and 209 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-17 17:21:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:21:38,845 INFO L93 Difference]: Finished difference Result 289 states and 418 transitions. [2021-12-17 17:21:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:21:38,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2021-12-17 17:21:38,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:21:38,851 INFO L225 Difference]: With dead ends: 289 [2021-12-17 17:21:38,852 INFO L226 Difference]: Without dead ends: 147 [2021-12-17 17:21:38,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:21:38,860 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 1 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:21:38,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 409 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:21:38,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-17 17:21:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-12-17 17:21:38,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 93 states have internal predecessors, (120), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-17 17:21:38,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 210 transitions. [2021-12-17 17:21:38,886 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 210 transitions. Word has length 147 [2021-12-17 17:21:38,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:21:38,888 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 210 transitions. [2021-12-17 17:21:38,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-17 17:21:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 210 transitions. [2021-12-17 17:21:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-17 17:21:38,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:21:38,894 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:21:38,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 17:21:38,894 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:21:38,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:21:38,895 INFO L85 PathProgramCache]: Analyzing trace with hash -611281689, now seen corresponding path program 1 times [2021-12-17 17:21:38,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:21:38,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045591688] [2021-12-17 17:21:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:21:38,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:21:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 17:21:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 17:21:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 17:21:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 17:21:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 17:21:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 17:21:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 17:21:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 17:21:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 17:21:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 17:21:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 17:21:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 17:21:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 17:21:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 17:21:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 17:21:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 17:21:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 17:21:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 17:21:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 17:21:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 17:21:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-17 17:21:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 17:21:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:21:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-12-17 17:21:45,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:21:45,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045591688] [2021-12-17 17:21:45,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045591688] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 17:21:45,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390582052] [2021-12-17 17:21:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:21:45,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 17:21:45,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 17:21:45,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 17:21:45,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 17:22:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:22:18,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 101552 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 17:22:18,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 17:22:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-12-17 17:22:19,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 17:22:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-12-17 17:22:19,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390582052] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 17:22:19,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 17:22:19,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-17 17:22:19,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603022542] [2021-12-17 17:22:19,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 17:22:19,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 17:22:19,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:22:19,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 17:22:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-17 17:22:19,528 INFO L87 Difference]: Start difference. First operand 146 states and 210 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2021-12-17 17:22:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:22:19,588 INFO L93 Difference]: Finished difference Result 293 states and 423 transitions. [2021-12-17 17:22:19,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 17:22:19,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 149 [2021-12-17 17:22:19,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:22:19,590 INFO L225 Difference]: With dead ends: 293 [2021-12-17 17:22:19,590 INFO L226 Difference]: Without dead ends: 150 [2021-12-17 17:22:19,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-17 17:22:19,592 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 3 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:22:19,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 612 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:22:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-17 17:22:19,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-12-17 17:22:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 97 states have (on average 1.2783505154639174) internal successors, (124), 97 states have internal predecessors, (124), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-17 17:22:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 214 transitions. [2021-12-17 17:22:19,612 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 214 transitions. Word has length 149 [2021-12-17 17:22:19,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:22:19,613 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 214 transitions. [2021-12-17 17:22:19,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2021-12-17 17:22:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 214 transitions. [2021-12-17 17:22:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-17 17:22:19,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:22:19,615 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:22:19,815 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2021-12-17 17:22:19,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 137 [2021-12-17 17:22:19,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 17:22:19,870 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:22:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:22:19,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1112495765, now seen corresponding path program 2 times [2021-12-17 17:22:19,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:22:19,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841184015] [2021-12-17 17:22:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:22:19,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:23:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 17:23:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 17:23:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 17:23:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 17:23:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 17:23:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-17 17:23:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 17:23:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 17:23:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 17:23:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 17:23:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 17:23:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 17:23:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 17:23:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 17:23:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 17:23:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 17:23:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 17:23:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-17 17:23:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 17:23:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-17 17:23:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-17 17:23:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-17 17:23:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:23:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2021-12-17 17:23:25,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:23:25,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841184015] [2021-12-17 17:23:25,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841184015] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 17:23:25,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569556323] [2021-12-17 17:23:25,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 17:23:25,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 17:23:25,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 17:23:25,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 17:23:25,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process Killed by 15