./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_szymanski.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 8c5cb1d1ec86f1df708ae47d652aad74925d4eb7bf3fc3a2c37d76896a5071e8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:40:08,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:40:08,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:40:08,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:40:08,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:40:08,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:40:08,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:40:08,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:40:08,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:40:08,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:40:08,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:40:08,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:40:08,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:40:08,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:40:08,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:40:08,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:40:08,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:40:08,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:40:08,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:40:08,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:40:08,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:40:08,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:40:08,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:40:08,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:40:08,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:40:08,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:40:08,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:40:08,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:40:08,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:40:08,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:40:08,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:40:08,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:40:08,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:40:08,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:40:08,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:40:08,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:40:08,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:40:08,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:40:08,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:40:08,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:40:08,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:40:08,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:40:08,539 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:40:08,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:40:08,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:40:08,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:40:08,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:40:08,542 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:40:08,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:40:08,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:40:08,543 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:40:08,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:40:08,544 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:40:08,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:40:08,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:40:08,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:40:08,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:40:08,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:40:08,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:40:08,545 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:40:08,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:40:08,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:40:08,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:40:08,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:40:08,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:40:08,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:40:08,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:40:08,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:40:08,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:40:08,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:40:08,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:40:08,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:40:08,547 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:40:08,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:40:08,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:40:08,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c5cb1d1ec86f1df708ae47d652aad74925d4eb7bf3fc3a2c37d76896a5071e8 [2021-12-28 01:40:08,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:40:08,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:40:08,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:40:08,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:40:08,904 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:40:08,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_szymanski.i [2021-12-28 01:40:08,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0a5c884/54b589e7507a4c4d92367710b42335f0/FLAGe03b6549e [2021-12-28 01:40:09,606 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:40:09,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_szymanski.i [2021-12-28 01:40:09,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0a5c884/54b589e7507a4c4d92367710b42335f0/FLAGe03b6549e [2021-12-28 01:40:09,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0a5c884/54b589e7507a4c4d92367710b42335f0 [2021-12-28 01:40:09,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:40:09,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:40:09,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:40:09,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:40:09,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:40:09,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:40:09" (1/1) ... [2021-12-28 01:40:09,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66126ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:09, skipping insertion in model container [2021-12-28 01:40:09,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:40:09" (1/1) ... [2021-12-28 01:40:09,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:40:10,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:40:10,328 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_szymanski.i[23606,23619] [2021-12-28 01:40:10,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:40:10,483 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:40:10,522 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_szymanski.i[23606,23619] [2021-12-28 01:40:10,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:40:10,621 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:40:10,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10 WrapperNode [2021-12-28 01:40:10,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:40:10,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:40:10,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:40:10,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:40:10,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (1/1) ... [2021-12-28 01:40:10,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (1/1) ... [2021-12-28 01:40:10,689 INFO L137 Inliner]: procedures = 145, calls = 289, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 395 [2021-12-28 01:40:10,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:40:10,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:40:10,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:40:10,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:40:10,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (1/1) ... [2021-12-28 01:40:10,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (1/1) ... [2021-12-28 01:40:10,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (1/1) ... [2021-12-28 01:40:10,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (1/1) ... [2021-12-28 01:40:10,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (1/1) ... [2021-12-28 01:40:10,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (1/1) ... [2021-12-28 01:40:10,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (1/1) ... [2021-12-28 01:40:10,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:40:10,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:40:10,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:40:10,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:40:10,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (1/1) ... [2021-12-28 01:40:10,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:40:10,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:40:10,837 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) [2021-12-28 01:40:10,863 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 [2021-12-28 01:40:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 01:40:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 01:40:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 01:40:10,882 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 01:40:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:40:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 01:40:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 01:40:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2021-12-28 01:40:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2021-12-28 01:40:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 01:40:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2021-12-28 01:40:10,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2021-12-28 01:40:10,885 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-28 01:40:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-28 01:40:10,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 01:40:10,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 01:40:10,885 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2021-12-28 01:40:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2021-12-28 01:40:10,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:40:10,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:40:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:40:11,063 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:40:11,065 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:40:13,705 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:40:13,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:40:13,715 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 01:40:13,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:40:13 BoogieIcfgContainer [2021-12-28 01:40:13,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:40:13,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:40:13,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:40:13,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:40:13,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:40:09" (1/3) ... [2021-12-28 01:40:13,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65eb0d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:40:13, skipping insertion in model container [2021-12-28 01:40:13,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:40:10" (2/3) ... [2021-12-28 01:40:13,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65eb0d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:40:13, skipping insertion in model container [2021-12-28 01:40:13,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:40:13" (3/3) ... [2021-12-28 01:40:13,727 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_szymanski.i [2021-12-28 01:40:13,732 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:40:13,733 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:40:13,785 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:40:13,794 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 [2021-12-28 01:40:13,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:40:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 73 states have internal predecessors, (96), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-28 01:40:13,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 01:40:13,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:40:13,840 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:40:13,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:40:13,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:40:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1875977801, now seen corresponding path program 1 times [2021-12-28 01:40:13,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:40:13,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954411707] [2021-12-28 01:40:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:13,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:40:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 01:40:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:40:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 01:40:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 01:40:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 01:40:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 01:40:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 01:40:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 01:40:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 01:40:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 01:40:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 01:40:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 01:40:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 01:40:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 01:40:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 01:40:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 01:40:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 01:40:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 01:40:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-12-28 01:40:15,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:40:15,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954411707] [2021-12-28 01:40:15,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954411707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:40:15,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:40:15,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:40:15,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780087580] [2021-12-28 01:40:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:40:15,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:40:15,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:40:15,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:40:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:40:15,226 INFO L87 Difference]: Start difference. First operand has 111 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 73 states have internal predecessors, (96), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-28 01:40:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:40:15,328 INFO L93 Difference]: Finished difference Result 224 states and 356 transitions. [2021-12-28 01:40:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:40:15,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 120 [2021-12-28 01:40:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:40:15,348 INFO L225 Difference]: With dead ends: 224 [2021-12-28 01:40:15,348 INFO L226 Difference]: Without dead ends: 111 [2021-12-28 01:40:15,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:40:15,366 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 4 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 304 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 [2021-12-28 01:40:15,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 304 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:40:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-28 01:40:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2021-12-28 01:40:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 70 states have internal predecessors, (89), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-28 01:40:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2021-12-28 01:40:15,484 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 120 [2021-12-28 01:40:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:40:15,484 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2021-12-28 01:40:15,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-28 01:40:15,485 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2021-12-28 01:40:15,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:40:15,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:40:15,488 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:40:15,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:40:15,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:40:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:40:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1912175905, now seen corresponding path program 1 times [2021-12-28 01:40:15,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:40:15,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259530080] [2021-12-28 01:40:15,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:15,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:40:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 01:40:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 01:40:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 01:40:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 01:40:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 01:40:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 01:40:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 01:40:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 01:40:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 01:40:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 01:40:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 01:40:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 01:40:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 01:40:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 01:40:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:15,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 01:40:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 01:40:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:40:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 01:40:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-12-28 01:40:16,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:40:16,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259530080] [2021-12-28 01:40:16,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259530080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:40:16,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:40:16,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:40:16,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555690227] [2021-12-28 01:40:16,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:40:16,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:40:16,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:40:16,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:40:16,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:40:16,027 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-28 01:40:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:40:16,069 INFO L93 Difference]: Finished difference Result 215 states and 306 transitions. [2021-12-28 01:40:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:40:16,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 123 [2021-12-28 01:40:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:40:16,076 INFO L225 Difference]: With dead ends: 215 [2021-12-28 01:40:16,077 INFO L226 Difference]: Without dead ends: 110 [2021-12-28 01:40:16,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:40:16,080 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 1 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 297 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 [2021-12-28 01:40:16,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 297 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:40:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-28 01:40:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2021-12-28 01:40:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-28 01:40:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 154 transitions. [2021-12-28 01:40:16,098 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 154 transitions. Word has length 123 [2021-12-28 01:40:16,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:40:16,098 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 154 transitions. [2021-12-28 01:40:16,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-28 01:40:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 154 transitions. [2021-12-28 01:40:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-28 01:40:16,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:40:16,101 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:40:16,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:40:16,102 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:40:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:40:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1930143839, now seen corresponding path program 1 times [2021-12-28 01:40:16,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:40:16,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952054988] [2021-12-28 01:40:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:16,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:40:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:40:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 01:40:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 01:40:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:40:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:40:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:40:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 01:40:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 01:40:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 01:40:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:40:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 01:40:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 01:40:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:40:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 01:40:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 01:40:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 01:40:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 01:40:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 01:40:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:16,508 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-12-28 01:40:16,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:40:16,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952054988] [2021-12-28 01:40:16,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952054988] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 01:40:16,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872633789] [2021-12-28 01:40:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:16,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 01:40:16,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:40:16,515 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) [2021-12-28 01:40:16,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 01:40:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:18,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 4528 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 01:40:18,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 01:40:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-12-28 01:40:18,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 01:40:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-12-28 01:40:18,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872633789] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 01:40:18,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 01:40:18,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-28 01:40:18,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752964598] [2021-12-28 01:40:18,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 01:40:18,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:40:18,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:40:18,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:40:18,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:40:18,676 INFO L87 Difference]: Start difference. First operand 109 states and 154 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2021-12-28 01:40:18,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:40:18,732 INFO L93 Difference]: Finished difference Result 219 states and 311 transitions. [2021-12-28 01:40:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:40:18,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 125 [2021-12-28 01:40:18,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:40:18,734 INFO L225 Difference]: With dead ends: 219 [2021-12-28 01:40:18,734 INFO L226 Difference]: Without dead ends: 113 [2021-12-28 01:40:18,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:40:18,736 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 3 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 297 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 [2021-12-28 01:40:18,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 297 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:40:18,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-28 01:40:18,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-12-28 01:40:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 75 states have internal predecessors, (94), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-28 01:40:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 158 transitions. [2021-12-28 01:40:18,746 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 158 transitions. Word has length 125 [2021-12-28 01:40:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:40:18,747 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 158 transitions. [2021-12-28 01:40:18,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2021-12-28 01:40:18,747 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 158 transitions. [2021-12-28 01:40:18,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-28 01:40:18,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:40:18,749 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 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] [2021-12-28 01:40:18,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 01:40:18,965 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 [2021-12-28 01:40:18,965 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:40:18,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:40:18,966 INFO L85 PathProgramCache]: Analyzing trace with hash -28203099, now seen corresponding path program 2 times [2021-12-28 01:40:18,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:40:18,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009282279] [2021-12-28 01:40:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:18,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:40:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 01:40:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 01:40:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 01:40:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 01:40:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 01:40:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 01:40:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 01:40:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 01:40:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 01:40:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 01:40:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 01:40:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 01:40:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 01:40:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 01:40:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 01:40:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:40:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 01:40:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 01:40:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2021-12-28 01:40:19,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:40:19,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009282279] [2021-12-28 01:40:19,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009282279] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 01:40:19,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047878639] [2021-12-28 01:40:19,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 01:40:19,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 01:40:19,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:40:19,526 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) [2021-12-28 01:40:19,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 01:40:21,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 01:40:21,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 01:40:21,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 4196 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 01:40:21,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 01:40:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2021-12-28 01:40:21,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 01:40:21,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047878639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:40:21,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 01:40:21,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-28 01:40:21,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587135935] [2021-12-28 01:40:21,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:40:21,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:40:21,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:40:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:40:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:40:21,795 INFO L87 Difference]: Start difference. First operand 113 states and 158 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-28 01:40:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:40:21,820 INFO L93 Difference]: Finished difference Result 211 states and 302 transitions. [2021-12-28 01:40:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:40:21,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2021-12-28 01:40:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:40:21,824 INFO L225 Difference]: With dead ends: 211 [2021-12-28 01:40:21,824 INFO L226 Difference]: Without dead ends: 169 [2021-12-28 01:40:21,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:40:21,826 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 77 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 528 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 [2021-12-28 01:40:21,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 528 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:40:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-28 01:40:21,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-12-28 01:40:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 113 states have (on average 1.2920353982300885) internal successors, (146), 113 states have internal predecessors, (146), 45 states have call successors, (45), 10 states have call predecessors, (45), 10 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2021-12-28 01:40:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 240 transitions. [2021-12-28 01:40:21,842 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 240 transitions. Word has length 129 [2021-12-28 01:40:21,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:40:21,843 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 240 transitions. [2021-12-28 01:40:21,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-28 01:40:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 240 transitions. [2021-12-28 01:40:21,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-28 01:40:21,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:40:21,846 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:40:21,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 01:40:22,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-28 01:40:22,072 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:40:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:40:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash -993819535, now seen corresponding path program 1 times [2021-12-28 01:40:22,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:40:22,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64033138] [2021-12-28 01:40:22,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:22,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:40:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:40:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:40:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:40:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:40:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:40:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 01:40:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 01:40:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:40:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 01:40:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:40:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:40:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:40:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 01:40:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 01:40:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 01:40:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 01:40:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 01:40:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 01:40:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 01:40:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 01:40:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-28 01:40:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-28 01:40:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-28 01:40:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 01:40:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-28 01:40:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2021-12-28 01:40:22,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:40:22,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64033138] [2021-12-28 01:40:22,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64033138] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 01:40:22,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369021697] [2021-12-28 01:40:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:22,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 01:40:22,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:40:22,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 01:40:22,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 01:40:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:24,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 4997 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 01:40:24,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 01:40:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2021-12-28 01:40:25,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 01:40:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2021-12-28 01:40:25,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369021697] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 01:40:25,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 01:40:25,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-12-28 01:40:25,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635719474] [2021-12-28 01:40:25,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 01:40:25,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 01:40:25,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:40:25,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 01:40:25,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-28 01:40:25,634 INFO L87 Difference]: Start difference. First operand 169 states and 240 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-12-28 01:40:27,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 01:40:29,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 01:40:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:40:30,229 INFO L93 Difference]: Finished difference Result 354 states and 502 transitions. [2021-12-28 01:40:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 01:40:30,230 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 206 [2021-12-28 01:40:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:40:30,232 INFO L225 Difference]: With dead ends: 354 [2021-12-28 01:40:30,232 INFO L226 Difference]: Without dead ends: 197 [2021-12-28 01:40:30,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 467 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-28 01:40:30,234 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 79 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 139 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:40:30,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 351 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 268 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2021-12-28 01:40:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-28 01:40:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2021-12-28 01:40:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 136 states have internal predecessors, (169), 45 states have call successors, (45), 10 states have call predecessors, (45), 12 states have return successors, (53), 45 states have call predecessors, (53), 45 states have call successors, (53) [2021-12-28 01:40:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 267 transitions. [2021-12-28 01:40:30,250 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 267 transitions. Word has length 206 [2021-12-28 01:40:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:40:30,250 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 267 transitions. [2021-12-28 01:40:30,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-12-28 01:40:30,251 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 267 transitions. [2021-12-28 01:40:30,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-28 01:40:30,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:40:30,254 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:40:30,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 01:40:30,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 01:40:30,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:40:30,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:40:30,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1193364367, now seen corresponding path program 2 times [2021-12-28 01:40:30,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:40:30,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499195299] [2021-12-28 01:40:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:30,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:40:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:40:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:40:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:40:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:40:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:40:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 01:40:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 01:40:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:40:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:40:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 01:40:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 01:40:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 01:40:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 01:40:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 01:40:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 01:40:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 01:40:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 01:40:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-28 01:40:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-28 01:40:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-28 01:40:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 01:40:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-28 01:40:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-28 01:40:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-28 01:40:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-28 01:40:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2021-12-28 01:40:31,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:40:31,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499195299] [2021-12-28 01:40:31,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499195299] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 01:40:31,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648091816] [2021-12-28 01:40:31,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 01:40:31,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 01:40:31,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:40:31,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 01:40:32,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 01:40:34,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 01:40:34,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 01:40:34,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 4282 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 01:40:34,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 01:40:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2021-12-28 01:40:34,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 01:40:34,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648091816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:40:34,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 01:40:34,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-28 01:40:34,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300612429] [2021-12-28 01:40:34,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:40:34,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:40:34,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:40:34,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:40:34,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-28 01:40:34,687 INFO L87 Difference]: Start difference. First operand 192 states and 267 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-28 01:40:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:40:34,707 INFO L93 Difference]: Finished difference Result 344 states and 482 transitions. [2021-12-28 01:40:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:40:34,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 224 [2021-12-28 01:40:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:40:34,710 INFO L225 Difference]: With dead ends: 344 [2021-12-28 01:40:34,711 INFO L226 Difference]: Without dead ends: 192 [2021-12-28 01:40:34,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-28 01:40:34,713 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:40:34,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:40:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-12-28 01:40:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-12-28 01:40:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 136 states have internal predecessors, (168), 45 states have call successors, (45), 10 states have call predecessors, (45), 12 states have return successors, (53), 45 states have call predecessors, (53), 45 states have call successors, (53) [2021-12-28 01:40:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 266 transitions. [2021-12-28 01:40:34,729 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 266 transitions. Word has length 224 [2021-12-28 01:40:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:40:34,729 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 266 transitions. [2021-12-28 01:40:34,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-28 01:40:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 266 transitions. [2021-12-28 01:40:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-28 01:40:34,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:40:34,732 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 9, 9, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:40:34,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 01:40:34,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 01:40:34,933 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:40:34,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:40:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1496592282, now seen corresponding path program 1 times [2021-12-28 01:40:34,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:40:34,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783383031] [2021-12-28 01:40:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:34,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:40:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 01:40:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 01:40:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:40:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:40:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 01:40:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:40:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 01:40:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 01:40:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 01:40:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 01:40:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 01:40:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-28 01:40:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 01:40:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-28 01:40:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 01:40:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-28 01:40:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-28 01:40:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-28 01:40:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-28 01:40:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-28 01:40:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-28 01:40:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-28 01:40:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-28 01:40:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-28 01:40:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-28 01:40:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-28 01:40:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-28 01:40:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1197 trivial. 0 not checked. [2021-12-28 01:40:36,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:40:36,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783383031] [2021-12-28 01:40:36,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783383031] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 01:40:36,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635995194] [2021-12-28 01:40:36,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:36,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 01:40:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:40:36,220 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 01:40:36,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 01:40:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:40:38,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 5430 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-28 01:40:38,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 01:40:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 374 proven. 21 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2021-12-28 01:40:39,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 01:40:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2021-12-28 01:40:40,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635995194] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 01:40:40,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 01:40:40,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 26 [2021-12-28 01:40:40,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190042935] [2021-12-28 01:40:40,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 01:40:40,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-28 01:40:40,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:40:40,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-28 01:40:40,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2021-12-28 01:40:40,007 INFO L87 Difference]: Start difference. First operand 192 states and 266 transitions. Second operand has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 21 states have internal predecessors, (118), 15 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) [2021-12-28 01:40:42,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 01:40:44,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 01:40:46,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 01:40:48,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 01:40:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:40:53,392 INFO L93 Difference]: Finished difference Result 1037 states and 1615 transitions. [2021-12-28 01:40:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-12-28 01:40:53,393 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 21 states have internal predecessors, (118), 15 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) Word has length 244 [2021-12-28 01:40:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:40:53,401 INFO L225 Difference]: With dead ends: 1037 [2021-12-28 01:40:53,401 INFO L226 Difference]: Without dead ends: 878 [2021-12-28 01:40:53,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3902 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1769, Invalid=9787, Unknown=0, NotChecked=0, Total=11556 [2021-12-28 01:40:53,406 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1102 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 1395 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1395 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-28 01:40:53,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 1094 Invalid, 4041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1395 Valid, 2642 Invalid, 4 Unknown, 0 Unchecked, 10.7s Time] [2021-12-28 01:40:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-28 01:40:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 547. [2021-12-28 01:40:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 376 states have (on average 1.25) internal successors, (470), 381 states have internal predecessors, (470), 108 states have call successors, (108), 50 states have call predecessors, (108), 62 states have return successors, (178), 115 states have call predecessors, (178), 108 states have call successors, (178) [2021-12-28 01:40:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 756 transitions. [2021-12-28 01:40:53,484 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 756 transitions. Word has length 244 [2021-12-28 01:40:53,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:40:53,485 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 756 transitions. [2021-12-28 01:40:53,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 21 states have internal predecessors, (118), 15 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) [2021-12-28 01:40:53,486 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 756 transitions. [2021-12-28 01:40:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-28 01:40:53,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:40:53,491 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 9, 9, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:40:53,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 01:40:53,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 01:40:53,718 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:40:53,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:40:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1922354694, now seen corresponding path program 1 times [2021-12-28 01:40:53,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:40:53,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006913829] [2021-12-28 01:40:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:40:53,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms