./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 15:57:41,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 15:57:41,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 15:57:41,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 15:57:41,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 15:57:42,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 15:57:42,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 15:57:42,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 15:57:42,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 15:57:42,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 15:57:42,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 15:57:42,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 15:57:42,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 15:57:42,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 15:57:42,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 15:57:42,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 15:57:42,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 15:57:42,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 15:57:42,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 15:57:42,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 15:57:42,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 15:57:42,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 15:57:42,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 15:57:42,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 15:57:42,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 15:57:42,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 15:57:42,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 15:57:42,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 15:57:42,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 15:57:42,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 15:57:42,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 15:57:42,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 15:57:42,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 15:57:42,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 15:57:42,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 15:57:42,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 15:57:42,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 15:57:42,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 15:57:42,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 15:57:42,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 15:57:42,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 15:57:42,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 15:57:42,061 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 15:57:42,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 15:57:42,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 15:57:42,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 15:57:42,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 15:57:42,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 15:57:42,064 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 15:57:42,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 15:57:42,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 15:57:42,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 15:57:42,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 15:57:42,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 15:57:42,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 15:57:42,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 15:57:42,066 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 15:57:42,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 15:57:42,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 15:57:42,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 15:57:42,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 15:57:42,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 15:57:42,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 15:57:42,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 15:57:42,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 15:57:42,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 15:57:42,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 15:57:42,067 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 15:57:42,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 15:57:42,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 15:57:42,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 15:57:42,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae [2021-11-05 15:57:42,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 15:57:42,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 15:57:42,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 15:57:42,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 15:57:42,354 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 15:57:42,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-11-05 15:57:42,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2de6976cd/b08d2942592d4586b3ee55277c9cdeb5/FLAG1e1222d62 [2021-11-05 15:57:42,994 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 15:57:42,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-11-05 15:57:43,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2de6976cd/b08d2942592d4586b3ee55277c9cdeb5/FLAG1e1222d62 [2021-11-05 15:57:43,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2de6976cd/b08d2942592d4586b3ee55277c9cdeb5 [2021-11-05 15:57:43,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 15:57:43,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 15:57:43,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 15:57:43,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 15:57:43,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 15:57:43,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 03:57:43" (1/1) ... [2021-11-05 15:57:43,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4913249c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:43, skipping insertion in model container [2021-11-05 15:57:43,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 03:57:43" (1/1) ... [2021-11-05 15:57:43,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 15:57:43,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 15:57:44,736 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2021-11-05 15:57:44,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 15:57:44,833 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 15:57:45,143 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2021-11-05 15:57:45,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 15:57:45,222 INFO L208 MainTranslator]: Completed translation [2021-11-05 15:57:45,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45 WrapperNode [2021-11-05 15:57:45,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 15:57:45,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 15:57:45,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 15:57:45,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 15:57:45,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (1/1) ... [2021-11-05 15:57:45,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (1/1) ... [2021-11-05 15:57:46,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 15:57:46,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 15:57:46,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 15:57:46,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 15:57:46,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (1/1) ... [2021-11-05 15:57:46,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (1/1) ... [2021-11-05 15:57:47,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (1/1) ... [2021-11-05 15:57:47,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (1/1) ... [2021-11-05 15:57:48,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (1/1) ... [2021-11-05 15:57:48,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (1/1) ... [2021-11-05 15:57:48,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (1/1) ... [2021-11-05 15:57:48,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 15:57:48,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 15:57:48,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 15:57:48,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 15:57:48,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (1/1) ... [2021-11-05 15:57:48,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 15:57:48,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:57:48,548 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) [2021-11-05 15:57:48,562 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 [2021-11-05 15:57:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-05 15:57:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 15:57:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 15:57:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2021-11-05 15:57:48,572 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2021-11-05 15:57:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 15:57:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 15:57:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 15:57:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 15:57:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 15:57:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 15:57:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 15:57:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 15:57:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2021-11-05 15:57:48,573 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2021-11-05 15:57:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 15:57:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 15:57:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 15:57:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 15:57:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 15:57:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 15:57:48,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 15:58:28,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 15:58:28,055 INFO L299 CfgBuilder]: Removed 7466 assume(true) statements. [2021-11-05 15:58:28,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 03:58:28 BoogieIcfgContainer [2021-11-05 15:58:28,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 15:58:28,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 15:58:28,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 15:58:28,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 15:58:28,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 03:57:43" (1/3) ... [2021-11-05 15:58:28,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3d05d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 03:58:28, skipping insertion in model container [2021-11-05 15:58:28,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:57:45" (2/3) ... [2021-11-05 15:58:28,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3d05d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 03:58:28, skipping insertion in model container [2021-11-05 15:58:28,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 03:58:28" (3/3) ... [2021-11-05 15:58:28,077 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-11-05 15:58:28,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 15:58:28,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-11-05 15:58:28,141 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 15:58:28,145 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 [2021-11-05 15:58:28,145 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-11-05 15:58:28,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 11083 states, 11030 states have (on average 1.4948322756119674) internal successors, (16488), 11051 states have internal predecessors, (16488), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-05 15:58:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-05 15:58:28,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:28,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:28,256 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:28,262 INFO L85 PathProgramCache]: Analyzing trace with hash -576168751, now seen corresponding path program 1 times [2021-11-05 15:58:28,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:28,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330882763] [2021-11-05 15:58:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:28,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:28,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:28,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330882763] [2021-11-05 15:58:28,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330882763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:28,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:28,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 15:58:28,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171987022] [2021-11-05 15:58:28,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:28,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:58:28,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:28,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:58:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:28,847 INFO L87 Difference]: Start difference. First operand has 11083 states, 11030 states have (on average 1.4948322756119674) internal successors, (16488), 11051 states have internal predecessors, (16488), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:29,241 INFO L93 Difference]: Finished difference Result 22162 states and 33116 transitions. [2021-11-05 15:58:29,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:58:29,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-05 15:58:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:29,300 INFO L225 Difference]: With dead ends: 22162 [2021-11-05 15:58:29,300 INFO L226 Difference]: Without dead ends: 11079 [2021-11-05 15:58:29,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:29,340 INFO L933 BasicCegarLoop]: 16322 mSDtfsCounter, 16320 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16320 SdHoareTripleChecker+Valid, 16322 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.59ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:29,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16320 Valid, 16322 Invalid, 1 Unknown, 0 Unchecked, 43.38ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.59ms Time] [2021-11-05 15:58:29,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11079 states. [2021-11-05 15:58:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11079 to 11079. [2021-11-05 15:58:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11079 states, 11027 states have (on average 1.4746531241498142) internal successors, (16261), 11047 states have internal predecessors, (16261), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-05 15:58:29,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11079 states to 11079 states and 16319 transitions. [2021-11-05 15:58:29,823 INFO L78 Accepts]: Start accepts. Automaton has 11079 states and 16319 transitions. Word has length 12 [2021-11-05 15:58:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:58:29,824 INFO L470 AbstractCegarLoop]: Abstraction has 11079 states and 16319 transitions. [2021-11-05 15:58:29,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 11079 states and 16319 transitions. [2021-11-05 15:58:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-05 15:58:29,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:29,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:29,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 15:58:29,826 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:29,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:29,828 INFO L85 PathProgramCache]: Analyzing trace with hash 103889619, now seen corresponding path program 1 times [2021-11-05 15:58:29,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:29,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866134416] [2021-11-05 15:58:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:29,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:30,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:30,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866134416] [2021-11-05 15:58:30,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866134416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:30,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:30,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:58:30,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41533453] [2021-11-05 15:58:30,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:30,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:58:30,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:58:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:30,021 INFO L87 Difference]: Start difference. First operand 11079 states and 16319 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:32,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:58:32,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:32,362 INFO L93 Difference]: Finished difference Result 11079 states and 16319 transitions. [2021-11-05 15:58:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:58:32,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-05 15:58:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:32,406 INFO L225 Difference]: With dead ends: 11079 [2021-11-05 15:58:32,406 INFO L226 Difference]: Without dead ends: 11077 [2021-11-05 15:58:32,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:32,411 INFO L933 BasicCegarLoop]: 16316 mSDtfsCounter, 16307 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2057.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16307 SdHoareTripleChecker+Valid, 16316 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2176.52ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:32,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16307 Valid, 16316 Invalid, 2 Unknown, 0 Unchecked, 20.30ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2176.52ms Time] [2021-11-05 15:58:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2021-11-05 15:58:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 11077. [2021-11-05 15:58:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11077 states, 11026 states have (on average 1.4746054779611826) internal successors, (16259), 11045 states have internal predecessors, (16259), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-05 15:58:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 16317 transitions. [2021-11-05 15:58:32,632 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 16317 transitions. Word has length 12 [2021-11-05 15:58:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:58:32,632 INFO L470 AbstractCegarLoop]: Abstraction has 11077 states and 16317 transitions. [2021-11-05 15:58:32,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 16317 transitions. [2021-11-05 15:58:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-05 15:58:32,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:32,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:32,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 15:58:32,638 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:32,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:32,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1074350623, now seen corresponding path program 1 times [2021-11-05 15:58:32,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:32,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934840386] [2021-11-05 15:58:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:32,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:32,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:32,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934840386] [2021-11-05 15:58:32,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934840386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:32,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:32,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:58:32,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434212230] [2021-11-05 15:58:32,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:32,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:58:32,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:32,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:58:32,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:32,771 INFO L87 Difference]: Start difference. First operand 11077 states and 16317 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:34,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:58:35,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:35,584 INFO L93 Difference]: Finished difference Result 33119 states and 48813 transitions. [2021-11-05 15:58:35,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:58:35,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-05 15:58:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:35,642 INFO L225 Difference]: With dead ends: 33119 [2021-11-05 15:58:35,643 INFO L226 Difference]: Without dead ends: 22074 [2021-11-05 15:58:35,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:35,676 INFO L933 BasicCegarLoop]: 18219 mSDtfsCounter, 16287 mSDsluCounter, 16209 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2059.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16287 SdHoareTripleChecker+Valid, 34428 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.47ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2199.35ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:35,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16287 Valid, 34428 Invalid, 39 Unknown, 0 Unchecked, 31.47ms Time], IncrementalHoareTripleChecker [15 Valid, 23 Invalid, 1 Unknown, 0 Unchecked, 2199.35ms Time] [2021-11-05 15:58:35,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22074 states. [2021-11-05 15:58:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22074 to 22046. [2021-11-05 15:58:36,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22046 states, 21964 states have (on average 1.4751411400473502) internal successors, (32400), 21983 states have internal predecessors, (32400), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-05 15:58:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22046 states to 22046 states and 32516 transitions. [2021-11-05 15:58:36,304 INFO L78 Accepts]: Start accepts. Automaton has 22046 states and 32516 transitions. Word has length 13 [2021-11-05 15:58:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:58:36,304 INFO L470 AbstractCegarLoop]: Abstraction has 22046 states and 32516 transitions. [2021-11-05 15:58:36,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:36,305 INFO L276 IsEmpty]: Start isEmpty. Operand 22046 states and 32516 transitions. [2021-11-05 15:58:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-05 15:58:36,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:36,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:36,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 15:58:36,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:36,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:36,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1054907549, now seen corresponding path program 1 times [2021-11-05 15:58:36,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:36,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888098073] [2021-11-05 15:58:36,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:36,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:36,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:36,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888098073] [2021-11-05 15:58:36,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888098073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:36,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:36,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:58:36,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342315089] [2021-11-05 15:58:36,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:36,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:58:36,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:58:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:36,454 INFO L87 Difference]: Start difference. First operand 22046 states and 32516 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:38,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:58:39,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:39,054 INFO L93 Difference]: Finished difference Result 22046 states and 32516 transitions. [2021-11-05 15:58:39,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:58:39,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-05 15:58:39,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:39,095 INFO L225 Difference]: With dead ends: 22046 [2021-11-05 15:58:39,095 INFO L226 Difference]: Without dead ends: 22044 [2021-11-05 15:58:39,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:39,106 INFO L933 BasicCegarLoop]: 16314 mSDtfsCounter, 16303 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2040.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16303 SdHoareTripleChecker+Valid, 16314 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2210.05ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:39,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16303 Valid, 16314 Invalid, 2 Unknown, 0 Unchecked, 16.41ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2210.05ms Time] [2021-11-05 15:58:39,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22044 states. [2021-11-05 15:58:39,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22044 to 22044. [2021-11-05 15:58:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22044 states, 21963 states have (on average 1.4751172426353412) internal successors, (32398), 21981 states have internal predecessors, (32398), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-05 15:58:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22044 states to 22044 states and 32514 transitions. [2021-11-05 15:58:39,538 INFO L78 Accepts]: Start accepts. Automaton has 22044 states and 32514 transitions. Word has length 14 [2021-11-05 15:58:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:58:39,538 INFO L470 AbstractCegarLoop]: Abstraction has 22044 states and 32514 transitions. [2021-11-05 15:58:39,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 22044 states and 32514 transitions. [2021-11-05 15:58:39,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-05 15:58:39,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:39,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:39,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 15:58:39,540 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:39,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1657565845, now seen corresponding path program 1 times [2021-11-05 15:58:39,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:39,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436011969] [2021-11-05 15:58:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:39,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:39,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:39,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436011969] [2021-11-05 15:58:39,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436011969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:39,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:39,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:58:39,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808402068] [2021-11-05 15:58:39,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:39,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:58:39,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:58:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:39,741 INFO L87 Difference]: Start difference. First operand 22044 states and 32514 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:41,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:58:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:42,221 INFO L93 Difference]: Finished difference Result 22044 states and 32514 transitions. [2021-11-05 15:58:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:58:42,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-05 15:58:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:42,270 INFO L225 Difference]: With dead ends: 22044 [2021-11-05 15:58:42,270 INFO L226 Difference]: Without dead ends: 22020 [2021-11-05 15:58:42,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:42,280 INFO L933 BasicCegarLoop]: 16298 mSDtfsCounter, 16054 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2060.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16054 SdHoareTripleChecker+Valid, 16514 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.42ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2214.64ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:42,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16054 Valid, 16514 Invalid, 31 Unknown, 0 Unchecked, 22.42ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 2214.64ms Time] [2021-11-05 15:58:42,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22020 states. [2021-11-05 15:58:42,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22020 to 22020. [2021-11-05 15:58:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22020 states, 21945 states have (on average 1.4747322852586011) internal successors, (32363), 21957 states have internal predecessors, (32363), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-05 15:58:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22020 states to 22020 states and 32479 transitions. [2021-11-05 15:58:42,750 INFO L78 Accepts]: Start accepts. Automaton has 22020 states and 32479 transitions. Word has length 15 [2021-11-05 15:58:42,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:58:42,750 INFO L470 AbstractCegarLoop]: Abstraction has 22020 states and 32479 transitions. [2021-11-05 15:58:42,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 22020 states and 32479 transitions. [2021-11-05 15:58:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-05 15:58:42,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:42,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:42,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 15:58:42,756 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:42,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:42,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1462807932, now seen corresponding path program 1 times [2021-11-05 15:58:42,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:42,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512132015] [2021-11-05 15:58:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:42,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:42,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:42,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512132015] [2021-11-05 15:58:42,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512132015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:42,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:42,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:58:42,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981943888] [2021-11-05 15:58:42,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:42,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:58:42,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:42,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:58:42,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:58:42,924 INFO L87 Difference]: Start difference. First operand 22020 states and 32479 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:44,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:44,037 INFO L93 Difference]: Finished difference Result 38803 states and 56946 transitions. [2021-11-05 15:58:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 15:58:44,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-05 15:58:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:44,107 INFO L225 Difference]: With dead ends: 38803 [2021-11-05 15:58:44,107 INFO L226 Difference]: Without dead ends: 33397 [2021-11-05 15:58:44,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.12ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 15:58:44,127 INFO L933 BasicCegarLoop]: 31080 mSDtfsCounter, 37628 mSDsluCounter, 68491 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37640 SdHoareTripleChecker+Valid, 99571 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.89ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.36ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:44,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37640 Valid, 99571 Invalid, 103 Unknown, 0 Unchecked, 87.89ms Time], IncrementalHoareTripleChecker [62 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 104.36ms Time] [2021-11-05 15:58:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33397 states. [2021-11-05 15:58:44,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33397 to 16903. [2021-11-05 15:58:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16903 states, 16840 states have (on average 1.4722684085510689) internal successors, (24793), 16852 states have internal predecessors, (24793), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-05 15:58:44,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16903 states to 16903 states and 24885 transitions. [2021-11-05 15:58:44,662 INFO L78 Accepts]: Start accepts. Automaton has 16903 states and 24885 transitions. Word has length 35 [2021-11-05 15:58:44,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:58:44,663 INFO L470 AbstractCegarLoop]: Abstraction has 16903 states and 24885 transitions. [2021-11-05 15:58:44,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:44,663 INFO L276 IsEmpty]: Start isEmpty. Operand 16903 states and 24885 transitions. [2021-11-05 15:58:44,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-05 15:58:44,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:44,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:44,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 15:58:44,665 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:44,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:44,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1855834942, now seen corresponding path program 1 times [2021-11-05 15:58:44,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:44,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120500626] [2021-11-05 15:58:44,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:44,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:44,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:44,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120500626] [2021-11-05 15:58:44,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120500626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:44,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:44,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:58:44,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444066803] [2021-11-05 15:58:44,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:44,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:58:44,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:44,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:58:44,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:44,815 INFO L87 Difference]: Start difference. First operand 16903 states and 24885 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:46,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:58:47,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:47,534 INFO L93 Difference]: Finished difference Result 33780 states and 49732 transitions. [2021-11-05 15:58:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:58:47,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-05 15:58:47,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:47,567 INFO L225 Difference]: With dead ends: 33780 [2021-11-05 15:58:47,567 INFO L226 Difference]: Without dead ends: 16909 [2021-11-05 15:58:47,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:47,588 INFO L933 BasicCegarLoop]: 22979 mSDtfsCounter, 16196 mSDsluCounter, 8664 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2051.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16196 SdHoareTripleChecker+Valid, 31643 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.92ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2241.15ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:47,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16196 Valid, 31643 Invalid, 27 Unknown, 0 Unchecked, 26.92ms Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2241.15ms Time] [2021-11-05 15:58:47,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16909 states. [2021-11-05 15:58:47,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16909 to 16899. [2021-11-05 15:58:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16899 states, 16838 states have (on average 1.47190877776458) internal successors, (24784), 16848 states have internal predecessors, (24784), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-05 15:58:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16899 states to 16899 states and 24876 transitions. [2021-11-05 15:58:47,932 INFO L78 Accepts]: Start accepts. Automaton has 16899 states and 24876 transitions. Word has length 35 [2021-11-05 15:58:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:58:47,933 INFO L470 AbstractCegarLoop]: Abstraction has 16899 states and 24876 transitions. [2021-11-05 15:58:47,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16899 states and 24876 transitions. [2021-11-05 15:58:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-05 15:58:47,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:47,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:47,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 15:58:47,936 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash 84168741, now seen corresponding path program 1 times [2021-11-05 15:58:47,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:47,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337650204] [2021-11-05 15:58:47,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:47,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:48,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:48,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337650204] [2021-11-05 15:58:48,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337650204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:48,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:48,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:58:48,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533782621] [2021-11-05 15:58:48,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:48,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:58:48,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:48,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:58:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:48,060 INFO L87 Difference]: Start difference. First operand 16899 states and 24876 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:48,631 INFO L93 Difference]: Finished difference Result 42657 states and 62783 transitions. [2021-11-05 15:58:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:58:48,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-05 15:58:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:48,694 INFO L225 Difference]: With dead ends: 42657 [2021-11-05 15:58:48,695 INFO L226 Difference]: Without dead ends: 25790 [2021-11-05 15:58:48,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:48,728 INFO L933 BasicCegarLoop]: 16720 mSDtfsCounter, 11477 mSDsluCounter, 15112 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11494 SdHoareTripleChecker+Valid, 31832 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.61ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.10ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:48,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11494 Valid, 31832 Invalid, 24 Unknown, 0 Unchecked, 21.61ms Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 25.10ms Time] [2021-11-05 15:58:48,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25790 states. [2021-11-05 15:58:49,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25790 to 25770. [2021-11-05 15:58:49,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25770 states, 25693 states have (on average 1.4711789203284942) internal successors, (37799), 25703 states have internal predecessors, (37799), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-05 15:58:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25770 states to 25770 states and 37923 transitions. [2021-11-05 15:58:49,366 INFO L78 Accepts]: Start accepts. Automaton has 25770 states and 37923 transitions. Word has length 37 [2021-11-05 15:58:49,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:58:49,366 INFO L470 AbstractCegarLoop]: Abstraction has 25770 states and 37923 transitions. [2021-11-05 15:58:49,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:49,366 INFO L276 IsEmpty]: Start isEmpty. Operand 25770 states and 37923 transitions. [2021-11-05 15:58:49,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 15:58:49,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:49,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:49,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 15:58:49,368 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:49,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:49,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1675455204, now seen corresponding path program 1 times [2021-11-05 15:58:49,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:49,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877154600] [2021-11-05 15:58:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:49,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:49,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:49,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877154600] [2021-11-05 15:58:49,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877154600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:49,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:49,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:58:49,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653099010] [2021-11-05 15:58:49,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:49,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:58:49,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:49,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:58:49,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:49,470 INFO L87 Difference]: Start difference. First operand 25770 states and 37923 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:50,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:50,579 INFO L93 Difference]: Finished difference Result 75730 states and 111574 transitions. [2021-11-05 15:58:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:58:50,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-05 15:58:50,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:50,677 INFO L225 Difference]: With dead ends: 75730 [2021-11-05 15:58:50,678 INFO L226 Difference]: Without dead ends: 49992 [2021-11-05 15:58:50,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:50,709 INFO L933 BasicCegarLoop]: 16324 mSDtfsCounter, 15669 mSDsluCounter, 16031 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15693 SdHoareTripleChecker+Valid, 32355 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.31ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.09ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:50,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15693 Valid, 32355 Invalid, 14 Unknown, 0 Unchecked, 24.31ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 13.09ms Time] [2021-11-05 15:58:50,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49992 states. [2021-11-05 15:58:52,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49992 to 47153. [2021-11-05 15:58:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47153 states, 47031 states have (on average 1.472900852629117) internal successors, (69272), 47041 states have internal predecessors, (69272), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-05 15:58:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47153 states to 47153 states and 69486 transitions. [2021-11-05 15:58:52,166 INFO L78 Accepts]: Start accepts. Automaton has 47153 states and 69486 transitions. Word has length 38 [2021-11-05 15:58:52,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:58:52,166 INFO L470 AbstractCegarLoop]: Abstraction has 47153 states and 69486 transitions. [2021-11-05 15:58:52,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 47153 states and 69486 transitions. [2021-11-05 15:58:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-05 15:58:52,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:52,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:52,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 15:58:52,173 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1335611205, now seen corresponding path program 1 times [2021-11-05 15:58:52,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:52,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263361165] [2021-11-05 15:58:52,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:52,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:52,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:52,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263361165] [2021-11-05 15:58:52,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263361165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:52,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:52,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:58:52,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345841361] [2021-11-05 15:58:52,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:52,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:58:52,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:58:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:52,440 INFO L87 Difference]: Start difference. First operand 47153 states and 69486 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:54,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:58:55,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:55,400 INFO L93 Difference]: Finished difference Result 47153 states and 69486 transitions. [2021-11-05 15:58:55,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:58:55,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-05 15:58:55,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:55,482 INFO L225 Difference]: With dead ends: 47153 [2021-11-05 15:58:55,482 INFO L226 Difference]: Without dead ends: 47143 [2021-11-05 15:58:55,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:58:55,497 INFO L933 BasicCegarLoop]: 16281 mSDtfsCounter, 201 mSDsluCounter, 16053 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2055.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 32334 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.44ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2202.58ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:55,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 32334 Invalid, 25 Unknown, 0 Unchecked, 15.44ms Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2202.58ms Time] [2021-11-05 15:58:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47143 states. [2021-11-05 15:58:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47143 to 47143. [2021-11-05 15:58:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47143 states, 47026 states have (on average 1.4725258367711478) internal successors, (69247), 47031 states have internal predecessors, (69247), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-05 15:58:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47143 states to 47143 states and 69461 transitions. [2021-11-05 15:58:56,659 INFO L78 Accepts]: Start accepts. Automaton has 47143 states and 69461 transitions. Word has length 39 [2021-11-05 15:58:56,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:58:56,660 INFO L470 AbstractCegarLoop]: Abstraction has 47143 states and 69461 transitions. [2021-11-05 15:58:56,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 47143 states and 69461 transitions. [2021-11-05 15:58:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 15:58:56,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:58:56,662 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:58:56,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 15:58:56,662 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:58:56,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:58:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1117073061, now seen corresponding path program 1 times [2021-11-05 15:58:56,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:58:56,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790378419] [2021-11-05 15:58:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:58:56,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:58:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:58:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:58:56,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:58:56,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790378419] [2021-11-05 15:58:56,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790378419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:58:56,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:58:56,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:58:56,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287159752] [2021-11-05 15:58:56,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:58:56,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:58:56,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:58:56,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:58:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:58:56,889 INFO L87 Difference]: Start difference. First operand 47143 states and 69461 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:58:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:58:59,112 INFO L93 Difference]: Finished difference Result 99424 states and 145784 transitions. [2021-11-05 15:58:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 15:58:59,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-05 15:58:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:58:59,281 INFO L225 Difference]: With dead ends: 99424 [2021-11-05 15:58:59,281 INFO L226 Difference]: Without dead ends: 90392 [2021-11-05 15:58:59,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.60ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 15:58:59,321 INFO L933 BasicCegarLoop]: 30998 mSDtfsCounter, 59530 mSDsluCounter, 46589 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59542 SdHoareTripleChecker+Valid, 77587 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.33ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.76ms IncrementalHoareTripleChecker+Time [2021-11-05 15:58:59,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59542 Valid, 77587 Invalid, 136 Unknown, 0 Unchecked, 64.33ms Time], IncrementalHoareTripleChecker [98 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 114.76ms Time] [2021-11-05 15:58:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90392 states. [2021-11-05 15:59:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90392 to 47139. [2021-11-05 15:59:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47139 states, 47022 states have (on average 1.4724809663561738) internal successors, (69239), 47027 states have internal predecessors, (69239), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-05 15:59:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47139 states to 47139 states and 69453 transitions. [2021-11-05 15:59:01,118 INFO L78 Accepts]: Start accepts. Automaton has 47139 states and 69453 transitions. Word has length 43 [2021-11-05 15:59:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:59:01,119 INFO L470 AbstractCegarLoop]: Abstraction has 47139 states and 69453 transitions. [2021-11-05 15:59:01,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:59:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 47139 states and 69453 transitions. [2021-11-05 15:59:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-05 15:59:01,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:59:01,130 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 15:59:01,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 15:59:01,131 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:59:01,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:59:01,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2077007777, now seen corresponding path program 1 times [2021-11-05 15:59:01,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:59:01,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186439821] [2021-11-05 15:59:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:59:01,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:59:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:59:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:59:01,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:59:01,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186439821] [2021-11-05 15:59:01,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186439821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:59:01,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:59:01,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 15:59:01,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67337627] [2021-11-05 15:59:01,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:59:01,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 15:59:01,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:59:01,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 15:59:01,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 15:59:01,254 INFO L87 Difference]: Start difference. First operand 47139 states and 69453 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:59:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:59:02,553 INFO L93 Difference]: Finished difference Result 94266 states and 138886 transitions. [2021-11-05 15:59:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 15:59:02,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-05 15:59:02,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:59:02,632 INFO L225 Difference]: With dead ends: 94266 [2021-11-05 15:59:02,633 INFO L226 Difference]: Without dead ends: 47097 [2021-11-05 15:59:02,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:59:02,790 INFO L933 BasicCegarLoop]: 16295 mSDtfsCounter, 25 mSDsluCounter, 32562 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 48857 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.27ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.37ms IncrementalHoareTripleChecker+Time [2021-11-05 15:59:02,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 48857 Invalid, 11 Unknown, 0 Unchecked, 19.27ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 16.37ms Time] [2021-11-05 15:59:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47097 states. [2021-11-05 15:59:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47097 to 47054. [2021-11-05 15:59:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47054 states, 46937 states have (on average 1.4729957176641029) internal successors, (69138), 46942 states have internal predecessors, (69138), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-05 15:59:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47054 states to 47054 states and 69352 transitions. [2021-11-05 15:59:04,133 INFO L78 Accepts]: Start accepts. Automaton has 47054 states and 69352 transitions. Word has length 72 [2021-11-05 15:59:04,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:59:04,133 INFO L470 AbstractCegarLoop]: Abstraction has 47054 states and 69352 transitions. [2021-11-05 15:59:04,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:59:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 47054 states and 69352 transitions. [2021-11-05 15:59:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 15:59:04,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:59:04,154 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 15:59:04,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 15:59:04,154 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:59:04,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:59:04,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1468839328, now seen corresponding path program 1 times [2021-11-05 15:59:04,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:59:04,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281856503] [2021-11-05 15:59:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:59:04,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:59:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:59:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:59:04,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:59:04,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281856503] [2021-11-05 15:59:04,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281856503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:59:04,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:59:04,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:59:04,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407281326] [2021-11-05 15:59:04,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:59:04,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:59:04,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:59:04,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:59:04,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:59:04,502 INFO L87 Difference]: Start difference. First operand 47054 states and 69352 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:59:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:59:05,765 INFO L93 Difference]: Finished difference Result 94248 states and 138860 transitions. [2021-11-05 15:59:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 15:59:05,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-05 15:59:05,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:59:05,954 INFO L225 Difference]: With dead ends: 94248 [2021-11-05 15:59:05,954 INFO L226 Difference]: Without dead ends: 47144 [2021-11-05 15:59:06,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.77ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:59:06,007 INFO L933 BasicCegarLoop]: 16294 mSDtfsCounter, 1123 mSDsluCounter, 47768 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 64062 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.00ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.59ms IncrementalHoareTripleChecker+Time [2021-11-05 15:59:06,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 64062 Invalid, 25 Unknown, 0 Unchecked, 25.00ms Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 28.59ms Time] [2021-11-05 15:59:06,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47144 states. [2021-11-05 15:59:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47144 to 47089. [2021-11-05 15:59:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47089 states, 46972 states have (on average 1.4725368304521842) internal successors, (69168), 46977 states have internal predecessors, (69168), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-05 15:59:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47089 states to 47089 states and 69382 transitions. [2021-11-05 15:59:07,442 INFO L78 Accepts]: Start accepts. Automaton has 47089 states and 69382 transitions. Word has length 103 [2021-11-05 15:59:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:59:07,443 INFO L470 AbstractCegarLoop]: Abstraction has 47089 states and 69382 transitions. [2021-11-05 15:59:07,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:59:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 47089 states and 69382 transitions. [2021-11-05 15:59:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-05 15:59:07,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:59:07,466 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:59:07,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 15:59:07,467 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:59:07,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:59:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash -753321489, now seen corresponding path program 1 times [2021-11-05 15:59:07,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:59:07,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202693714] [2021-11-05 15:59:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:59:07,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:59:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:59:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-05 15:59:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:59:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:59:07,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:59:07,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202693714] [2021-11-05 15:59:07,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202693714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:59:07,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:59:07,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 15:59:07,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175640429] [2021-11-05 15:59:07,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:59:07,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 15:59:07,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:59:07,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 15:59:07,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 15:59:07,770 INFO L87 Difference]: Start difference. First operand 47089 states and 69382 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 15:59:09,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:59:12,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:59:35,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:59:35,683 INFO L93 Difference]: Finished difference Result 94220 states and 138837 transitions. [2021-11-05 15:59:35,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 15:59:35,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-11-05 15:59:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:59:35,773 INFO L225 Difference]: With dead ends: 94220 [2021-11-05 15:59:35,773 INFO L226 Difference]: Without dead ends: 47163 [2021-11-05 15:59:35,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.45ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 15:59:35,837 INFO L933 BasicCegarLoop]: 16256 mSDtfsCounter, 41 mSDsluCounter, 26369 mSDsCounter, 0 mSdLazyCounter, 6196 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23889.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 42625 SdHoareTripleChecker+Invalid, 6226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.55ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6196 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26513.18ms IncrementalHoareTripleChecker+Time [2021-11-05 15:59:35,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 42625 Invalid, 6226 Unknown, 0 Unchecked, 50.55ms Time], IncrementalHoareTripleChecker [28 Valid, 6196 Invalid, 2 Unknown, 0 Unchecked, 26513.18ms Time] [2021-11-05 15:59:35,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47163 states. [2021-11-05 15:59:37,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47163 to 47093. [2021-11-05 15:59:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47093 states, 46976 states have (on average 1.4724965940054495) internal successors, (69172), 46981 states have internal predecessors, (69172), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-05 15:59:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47093 states to 47093 states and 69386 transitions. [2021-11-05 15:59:37,410 INFO L78 Accepts]: Start accepts. Automaton has 47093 states and 69386 transitions. Word has length 121 [2021-11-05 15:59:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:59:37,411 INFO L470 AbstractCegarLoop]: Abstraction has 47093 states and 69386 transitions. [2021-11-05 15:59:37,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 15:59:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 47093 states and 69386 transitions. [2021-11-05 15:59:37,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-05 15:59:37,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:59:37,443 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:59:37,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 15:59:37,444 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 15:59:37,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:59:37,445 INFO L85 PathProgramCache]: Analyzing trace with hash 971400235, now seen corresponding path program 1 times [2021-11-05 15:59:37,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:59:37,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610529868] [2021-11-05 15:59:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:59:37,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:59:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:59:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-05 15:59:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:59:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:59:37,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:59:37,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610529868] [2021-11-05 15:59:37,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610529868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:59:37,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077848072] [2021-11-05 15:59:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:59:37,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:59:37,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:59:37,613 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) [2021-11-05 15:59:37,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 15:59:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:59:39,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 3253 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:59:39,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:59:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:59:39,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 15:59:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:59:39,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077848072] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 15:59:39,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 15:59:39,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-05 15:59:39,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670813579] [2021-11-05 15:59:39,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 15:59:39,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 15:59:39,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:59:39,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 15:59:39,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-05 15:59:39,585 INFO L87 Difference]: Start difference. First operand 47093 states and 69386 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 15:59:41,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:59:44,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:00:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:00:08,817 INFO L93 Difference]: Finished difference Result 94244 states and 138869 transitions. [2021-11-05 16:00:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 16:00:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2021-11-05 16:00:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:00:09,020 INFO L225 Difference]: With dead ends: 94244 [2021-11-05 16:00:09,021 INFO L226 Difference]: Without dead ends: 47183 [2021-11-05 16:00:09,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.92ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:00:09,084 INFO L933 BasicCegarLoop]: 16256 mSDtfsCounter, 44 mSDsluCounter, 42622 mSDsCounter, 0 mSdLazyCounter, 6231 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24625.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 58878 SdHoareTripleChecker+Invalid, 6265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.42ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 6231 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27464.43ms IncrementalHoareTripleChecker+Time [2021-11-05 16:00:09,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 58878 Invalid, 6265 Unknown, 0 Unchecked, 55.42ms Time], IncrementalHoareTripleChecker [32 Valid, 6231 Invalid, 2 Unknown, 0 Unchecked, 27464.43ms Time] [2021-11-05 16:00:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47183 states.