./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.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 a49fa2cb2318ea112688f7105056cfdc1f55c42e8f926c44139a3fa1f7774bac --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:18:00,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:18:00,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:18:00,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:18:00,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:18:00,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:18:01,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:18:01,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:18:01,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:18:01,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:18:01,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:18:01,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:18:01,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:18:01,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:18:01,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:18:01,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:18:01,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:18:01,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:18:01,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:18:01,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:18:01,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:18:01,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:18:01,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:18:01,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:18:01,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:18:01,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:18:01,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:18:01,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:18:01,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:18:01,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:18:01,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:18:01,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:18:01,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:18:01,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:18:01,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:18:01,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:18:01,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:18:01,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:18:01,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:18:01,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:18:01,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:18:01,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:18:01,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:18:01,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:18:01,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:18:01,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:18:01,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:18:01,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:18:01,090 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:18:01,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:18:01,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:18:01,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:18:01,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:18:01,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:18:01,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:18:01,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:18:01,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:18:01,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:18:01,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:18:01,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:18:01,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:18:01,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:18:01,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:18:01,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:18:01,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:18:01,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:18:01,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:18:01,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:18:01,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:18:01,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:18:01,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:18:01,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa2cb2318ea112688f7105056cfdc1f55c42e8f926c44139a3fa1f7774bac [2021-11-07 13:18:01,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:18:01,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:18:01,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:18:01,346 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:18:01,347 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:18:01,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-07 13:18:01,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01898a2b6/4fb13744b5ab43c6ab93b301363bd813/FLAG7cdb90b86 [2021-11-07 13:18:02,178 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:18:02,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-07 13:18:02,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01898a2b6/4fb13744b5ab43c6ab93b301363bd813/FLAG7cdb90b86 [2021-11-07 13:18:02,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01898a2b6/4fb13744b5ab43c6ab93b301363bd813 [2021-11-07 13:18:02,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:18:02,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:18:02,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:18:02,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:18:02,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:18:02,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:18:02" (1/1) ... [2021-11-07 13:18:02,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a21445d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:02, skipping insertion in model container [2021-11-07 13:18:02,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:18:02" (1/1) ... [2021-11-07 13:18:02,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:18:02,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:18:03,789 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-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2021-11-07 13:18:05,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:18:05,788 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:18:05,900 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-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2021-11-07 13:18:06,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:18:06,441 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:18:06,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06 WrapperNode [2021-11-07 13:18:06,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:18:06,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:18:06,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:18:06,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:18:06,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (1/1) ... [2021-11-07 13:18:06,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (1/1) ... [2021-11-07 13:18:07,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:18:07,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:18:07,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:18:07,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:18:07,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (1/1) ... [2021-11-07 13:18:07,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (1/1) ... [2021-11-07 13:18:07,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (1/1) ... [2021-11-07 13:18:07,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (1/1) ... [2021-11-07 13:18:08,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (1/1) ... [2021-11-07 13:18:08,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (1/1) ... [2021-11-07 13:18:08,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (1/1) ... [2021-11-07 13:18:08,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:18:08,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:18:08,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:18:08,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:18:08,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (1/1) ... [2021-11-07 13:18:08,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:18:08,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:18:08,886 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) [2021-11-07 13:18:08,939 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 [2021-11-07 13:18:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-07 13:18:08,983 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-07 13:18:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 13:18:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-07 13:18:08,983 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-07 13:18:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:18:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:18:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:18:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:18:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:18:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:18:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 13:18:08,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:18:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:18:08,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:18:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:18:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:18:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:18:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:18:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:18:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:18:35,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:18:35,552 INFO L299 CfgBuilder]: Removed 5688 assume(true) statements. [2021-11-07 13:18:35,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:18:35 BoogieIcfgContainer [2021-11-07 13:18:35,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:18:35,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:18:35,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:18:35,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:18:35,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:18:02" (1/3) ... [2021-11-07 13:18:35,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271c6a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:18:35, skipping insertion in model container [2021-11-07 13:18:35,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:06" (2/3) ... [2021-11-07 13:18:35,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271c6a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:18:35, skipping insertion in model container [2021-11-07 13:18:35,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:18:35" (3/3) ... [2021-11-07 13:18:35,564 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-07 13:18:35,568 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:18:35,568 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:18:35,626 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:18:35,631 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 [2021-11-07 13:18:35,632 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:18:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 6328 states, 6304 states have (on average 1.374524111675127) internal successors, (8665), 6305 states have internal predecessors, (8665), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 13:18:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 13:18:35,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:35,729 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] [2021-11-07 13:18:35,730 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1442246229, now seen corresponding path program 1 times [2021-11-07 13:18:35,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:35,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391116199] [2021-11-07 13:18:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:35,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:18:36,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:36,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391116199] [2021-11-07 13:18:36,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391116199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:36,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:36,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:18:36,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752803577] [2021-11-07 13:18:36,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:36,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:18:36,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:36,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:18:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:18:36,768 INFO L87 Difference]: Start difference. First operand has 6328 states, 6304 states have (on average 1.374524111675127) internal successors, (8665), 6305 states have internal predecessors, (8665), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-11-07 13:18:38,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:18:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:39,581 INFO L93 Difference]: Finished difference Result 18948 states and 26071 transitions. [2021-11-07 13:18:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:18:39,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2021-11-07 13:18:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:39,655 INFO L225 Difference]: With dead ends: 18948 [2021-11-07 13:18:39,655 INFO L226 Difference]: Without dead ends: 11705 [2021-11-07 13:18:39,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:18:39,685 INFO L933 BasicCegarLoop]: 8604 mSDtfsCounter, 8547 mSDsluCounter, 8572 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2204.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8547 SdHoareTripleChecker+Valid, 17176 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.32ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2352.08ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:39,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8547 Valid, 17176 Invalid, 15 Unknown, 0 Unchecked, 48.32ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2352.08ms Time] [2021-11-07 13:18:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11705 states. [2021-11-07 13:18:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11705 to 11705. [2021-11-07 13:18:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11705 states, 11660 states have (on average 1.3115780445969125) internal successors, (15293), 11660 states have internal predecessors, (15293), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 13:18:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11705 states to 11705 states and 15373 transitions. [2021-11-07 13:18:40,101 INFO L78 Accepts]: Start accepts. Automaton has 11705 states and 15373 transitions. Word has length 20 [2021-11-07 13:18:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:40,101 INFO L470 AbstractCegarLoop]: Abstraction has 11705 states and 15373 transitions. [2021-11-07 13:18:40,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-11-07 13:18:40,103 INFO L276 IsEmpty]: Start isEmpty. Operand 11705 states and 15373 transitions. [2021-11-07 13:18:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 13:18:40,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:40,111 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] [2021-11-07 13:18:40,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:18:40,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:40,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1119078949, now seen corresponding path program 1 times [2021-11-07 13:18:40,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:40,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019253561] [2021-11-07 13:18:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:40,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:40,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:18:40,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:40,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019253561] [2021-11-07 13:18:40,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019253561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:40,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:40,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:18:40,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155967556] [2021-11-07 13:18:40,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:40,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:18:40,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:40,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:18:40,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:18:40,835 INFO L87 Difference]: Start difference. First operand 11705 states and 15373 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-07 13:18:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:41,878 INFO L93 Difference]: Finished difference Result 35093 states and 46094 transitions. [2021-11-07 13:18:41,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:18:41,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 13:18:41,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:41,985 INFO L225 Difference]: With dead ends: 35093 [2021-11-07 13:18:41,986 INFO L226 Difference]: Without dead ends: 23393 [2021-11-07 13:18:42,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.67ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:18:42,022 INFO L933 BasicCegarLoop]: 7659 mSDtfsCounter, 7662 mSDsluCounter, 22933 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 427.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7662 SdHoareTripleChecker+Valid, 30592 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.78ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 508.91ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:42,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7662 Valid, 30592 Invalid, 293 Unknown, 0 Unchecked, 50.78ms Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 508.91ms Time] [2021-11-07 13:18:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23393 states. [2021-11-07 13:18:42,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23393 to 23313. [2021-11-07 13:18:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23313 states, 23224 states have (on average 1.3112728212194282) internal successors, (30453), 23224 states have internal predecessors, (30453), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-07 13:18:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23313 states to 23313 states and 30613 transitions. [2021-11-07 13:18:42,615 INFO L78 Accepts]: Start accepts. Automaton has 23313 states and 30613 transitions. Word has length 24 [2021-11-07 13:18:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:42,615 INFO L470 AbstractCegarLoop]: Abstraction has 23313 states and 30613 transitions. [2021-11-07 13:18:42,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-07 13:18:42,617 INFO L276 IsEmpty]: Start isEmpty. Operand 23313 states and 30613 transitions. [2021-11-07 13:18:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 13:18:42,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:42,632 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 13:18:42,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:18:42,636 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:42,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1273665167, now seen corresponding path program 1 times [2021-11-07 13:18:42,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:42,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749883004] [2021-11-07 13:18:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:42,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:18:43,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:43,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749883004] [2021-11-07 13:18:43,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749883004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:43,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:43,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:18:43,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609839230] [2021-11-07 13:18:43,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:43,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:18:43,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:43,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:18:43,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:18:43,035 INFO L87 Difference]: Start difference. First operand 23313 states and 30613 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-11-07 13:18:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:43,871 INFO L93 Difference]: Finished difference Result 61991 states and 81275 transitions. [2021-11-07 13:18:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:18:43,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-07 13:18:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:43,978 INFO L225 Difference]: With dead ends: 61991 [2021-11-07 13:18:43,979 INFO L226 Difference]: Without dead ends: 38688 [2021-11-07 13:18:44,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:18:44,046 INFO L933 BasicCegarLoop]: 7755 mSDtfsCounter, 5509 mSDsluCounter, 7166 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5509 SdHoareTripleChecker+Valid, 14921 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.07ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 254.98ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:44,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5509 Valid, 14921 Invalid, 64 Unknown, 0 Unchecked, 16.07ms Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 254.98ms Time] [2021-11-07 13:18:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38688 states. [2021-11-07 13:18:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38688 to 37957. [2021-11-07 13:18:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37957 states, 37812 states have (on average 1.3079974611234528) internal successors, (49458), 37816 states have internal predecessors, (49458), 132 states have call successors, (132), 12 states have call predecessors, (132), 12 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2021-11-07 13:18:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37957 states to 37957 states and 49722 transitions. [2021-11-07 13:18:45,189 INFO L78 Accepts]: Start accepts. Automaton has 37957 states and 49722 transitions. Word has length 65 [2021-11-07 13:18:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:45,189 INFO L470 AbstractCegarLoop]: Abstraction has 37957 states and 49722 transitions. [2021-11-07 13:18:45,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-11-07 13:18:45,190 INFO L276 IsEmpty]: Start isEmpty. Operand 37957 states and 49722 transitions. [2021-11-07 13:18:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 13:18:45,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:45,204 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 13:18:45,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:18:45,205 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:45,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:45,205 INFO L85 PathProgramCache]: Analyzing trace with hash -321258289, now seen corresponding path program 1 times [2021-11-07 13:18:45,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:45,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888773028] [2021-11-07 13:18:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:45,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 13:18:45,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:45,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888773028] [2021-11-07 13:18:45,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888773028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:45,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:45,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:18:45,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950262143] [2021-11-07 13:18:45,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:45,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:18:45,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:45,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:18:45,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:18:45,593 INFO L87 Difference]: Start difference. First operand 37957 states and 49722 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-07 13:18:46,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:46,852 INFO L93 Difference]: Finished difference Result 101519 states and 132890 transitions. [2021-11-07 13:18:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:18:46,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-07 13:18:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:47,096 INFO L225 Difference]: With dead ends: 101519 [2021-11-07 13:18:47,096 INFO L226 Difference]: Without dead ends: 63572 [2021-11-07 13:18:47,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:18:47,157 INFO L933 BasicCegarLoop]: 9799 mSDtfsCounter, 5252 mSDsluCounter, 7673 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5252 SdHoareTripleChecker+Valid, 17472 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.63ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.44ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:47,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5252 Valid, 17472 Invalid, 20 Unknown, 0 Unchecked, 13.63ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 204.44ms Time] [2021-11-07 13:18:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63572 states. [2021-11-07 13:18:48,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63572 to 63565. [2021-11-07 13:18:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63565 states, 63380 states have (on average 1.3070053644682866) internal successors, (82838), 63384 states have internal predecessors, (82838), 164 states have call successors, (164), 20 states have call predecessors, (164), 20 states have return successors, (164), 160 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-07 13:18:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63565 states to 63565 states and 83166 transitions. [2021-11-07 13:18:48,807 INFO L78 Accepts]: Start accepts. Automaton has 63565 states and 83166 transitions. Word has length 84 [2021-11-07 13:18:48,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:48,809 INFO L470 AbstractCegarLoop]: Abstraction has 63565 states and 83166 transitions. [2021-11-07 13:18:48,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-07 13:18:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 63565 states and 83166 transitions. [2021-11-07 13:18:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 13:18:48,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:48,833 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 13:18:48,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:18:48,834 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:48,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1211709067, now seen corresponding path program 1 times [2021-11-07 13:18:48,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:48,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173749127] [2021-11-07 13:18:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:48,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 13:18:49,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:49,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173749127] [2021-11-07 13:18:49,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173749127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:49,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:49,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:18:49,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382129927] [2021-11-07 13:18:49,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:49,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:18:49,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:49,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:18:49,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:18:49,659 INFO L87 Difference]: Start difference. First operand 63565 states and 83166 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-07 13:18:51,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:18:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:53,264 INFO L93 Difference]: Finished difference Result 152823 states and 199938 transitions. [2021-11-07 13:18:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:18:53,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-07 13:18:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:53,450 INFO L225 Difference]: With dead ends: 152823 [2021-11-07 13:18:53,451 INFO L226 Difference]: Without dead ends: 89268 [2021-11-07 13:18:53,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:18:53,554 INFO L933 BasicCegarLoop]: 12935 mSDtfsCounter, 6162 mSDsluCounter, 6770 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2189.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6162 SdHoareTripleChecker+Valid, 19705 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.42ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2325.48ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:53,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6162 Valid, 19705 Invalid, 30 Unknown, 0 Unchecked, 15.42ms Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2325.48ms Time] [2021-11-07 13:18:53,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89268 states. [2021-11-07 13:18:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89268 to 89261. [2021-11-07 13:18:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89261 states, 89036 states have (on average 1.3066400107821556) internal successors, (116338), 89040 states have internal predecessors, (116338), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-07 13:18:55,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89261 states to 89261 states and 116730 transitions. [2021-11-07 13:18:55,862 INFO L78 Accepts]: Start accepts. Automaton has 89261 states and 116730 transitions. Word has length 96 [2021-11-07 13:18:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:55,863 INFO L470 AbstractCegarLoop]: Abstraction has 89261 states and 116730 transitions. [2021-11-07 13:18:55,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-07 13:18:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 89261 states and 116730 transitions. [2021-11-07 13:18:55,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 13:18:55,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:55,892 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:18:55,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:18:55,893 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:55,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2134919312, now seen corresponding path program 1 times [2021-11-07 13:18:55,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:55,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368926504] [2021-11-07 13:18:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:55,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 13:18:56,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:56,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368926504] [2021-11-07 13:18:56,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368926504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:56,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:56,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:18:56,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965878257] [2021-11-07 13:18:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:56,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:18:56,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:56,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:18:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:18:56,288 INFO L87 Difference]: Start difference. First operand 89261 states and 116730 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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) [2021-11-07 13:18:58,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:19:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:19:00,740 INFO L93 Difference]: Finished difference Result 208579 states and 272802 transitions. [2021-11-07 13:19:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:19:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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 109 [2021-11-07 13:19:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:19:01,030 INFO L225 Difference]: With dead ends: 208579 [2021-11-07 13:19:01,030 INFO L226 Difference]: Without dead ends: 119328 [2021-11-07 13:19:01,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:19:01,143 INFO L933 BasicCegarLoop]: 13870 mSDtfsCounter, 11348 mSDsluCounter, 16386 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2179.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11348 SdHoareTripleChecker+Valid, 30256 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.89ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2349.98ms IncrementalHoareTripleChecker+Time [2021-11-07 13:19:01,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11348 Valid, 30256 Invalid, 34 Unknown, 0 Unchecked, 24.89ms Time], IncrementalHoareTripleChecker [12 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2349.98ms Time] [2021-11-07 13:19:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119328 states. [2021-11-07 13:19:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119328 to 89277. [2021-11-07 13:19:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89277 states, 89052 states have (on average 1.306584916677896) internal successors, (116354), 89056 states have internal predecessors, (116354), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-07 13:19:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89277 states to 89277 states and 116746 transitions. [2021-11-07 13:19:03,177 INFO L78 Accepts]: Start accepts. Automaton has 89277 states and 116746 transitions. Word has length 109 [2021-11-07 13:19:03,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:19:03,180 INFO L470 AbstractCegarLoop]: Abstraction has 89277 states and 116746 transitions. [2021-11-07 13:19:03,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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) [2021-11-07 13:19:03,180 INFO L276 IsEmpty]: Start isEmpty. Operand 89277 states and 116746 transitions. [2021-11-07 13:19:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 13:19:03,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:19:03,223 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:19:03,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:19:03,223 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:19:03,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:19:03,224 INFO L85 PathProgramCache]: Analyzing trace with hash 704799202, now seen corresponding path program 1 times [2021-11-07 13:19:03,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:19:03,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63884705] [2021-11-07 13:19:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:19:03,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:19:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:19:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 13:19:03,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:19:03,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63884705] [2021-11-07 13:19:03,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63884705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:19:03,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:19:03,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:19:03,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449163939] [2021-11-07 13:19:03,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:19:03,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:19:03,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:19:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:19:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:19:03,873 INFO L87 Difference]: Start difference. First operand 89277 states and 116746 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-11-07 13:19:06,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:19:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:19:08,517 INFO L93 Difference]: Finished difference Result 208619 states and 272842 transitions. [2021-11-07 13:19:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:19:08,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 118 [2021-11-07 13:19:08,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:19:08,799 INFO L225 Difference]: With dead ends: 208619 [2021-11-07 13:19:08,800 INFO L226 Difference]: Without dead ends: 119352 [2021-11-07 13:19:08,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:19:08,916 INFO L933 BasicCegarLoop]: 11783 mSDtfsCounter, 11348 mSDsluCounter, 16300 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2196.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11348 SdHoareTripleChecker+Valid, 28083 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.63ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2359.01ms IncrementalHoareTripleChecker+Time [2021-11-07 13:19:08,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11348 Valid, 28083 Invalid, 33 Unknown, 0 Unchecked, 33.63ms Time], IncrementalHoareTripleChecker [13 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2359.01ms Time] [2021-11-07 13:19:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119352 states. [2021-11-07 13:19:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119352 to 89277. [2021-11-07 13:19:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89277 states, 89052 states have (on average 1.306584916677896) internal successors, (116354), 89056 states have internal predecessors, (116354), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-07 13:19:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89277 states to 89277 states and 116746 transitions. [2021-11-07 13:19:11,013 INFO L78 Accepts]: Start accepts. Automaton has 89277 states and 116746 transitions. Word has length 118 [2021-11-07 13:19:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:19:11,014 INFO L470 AbstractCegarLoop]: Abstraction has 89277 states and 116746 transitions. [2021-11-07 13:19:11,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-11-07 13:19:11,014 INFO L276 IsEmpty]: Start isEmpty. Operand 89277 states and 116746 transitions. [2021-11-07 13:19:11,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 13:19:11,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:19:11,062 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:19:11,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 13:19:11,063 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:19:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:19:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1964775073, now seen corresponding path program 1 times [2021-11-07 13:19:11,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:19:11,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42749755] [2021-11-07 13:19:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:19:11,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:19:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:19:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 13:19:11,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:19:11,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42749755] [2021-11-07 13:19:11,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42749755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:19:11,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:19:11,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:19:11,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136450050] [2021-11-07 13:19:11,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:19:11,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:19:11,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:19:11,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:19:11,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:19:11,715 INFO L87 Difference]: Start difference. First operand 89277 states and 116746 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 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) [2021-11-07 13:19:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:19:13,703 INFO L93 Difference]: Finished difference Result 178544 states and 233480 transitions. [2021-11-07 13:19:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:19:13,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 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 136 [2021-11-07 13:19:13,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:19:13,885 INFO L225 Difference]: With dead ends: 178544 [2021-11-07 13:19:13,886 INFO L226 Difference]: Without dead ends: 89277 [2021-11-07 13:19:14,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:19:14,011 INFO L933 BasicCegarLoop]: 7700 mSDtfsCounter, 7664 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7664 SdHoareTripleChecker+Valid, 7700 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.48ms IncrementalHoareTripleChecker+Time [2021-11-07 13:19:14,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7664 Valid, 7700 Invalid, 2 Unknown, 0 Unchecked, 10.64ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 5.48ms Time] [2021-11-07 13:19:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89277 states. [2021-11-07 13:19:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89277 to 89277. [2021-11-07 13:19:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89277 states, 89052 states have (on average 1.3064950815254008) internal successors, (116346), 89056 states have internal predecessors, (116346), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-07 13:19:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89277 states to 89277 states and 116738 transitions. [2021-11-07 13:19:16,242 INFO L78 Accepts]: Start accepts. Automaton has 89277 states and 116738 transitions. Word has length 136 [2021-11-07 13:19:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:19:16,242 INFO L470 AbstractCegarLoop]: Abstraction has 89277 states and 116738 transitions. [2021-11-07 13:19:16,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 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) [2021-11-07 13:19:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 89277 states and 116738 transitions. [2021-11-07 13:19:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 13:19:16,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:19:16,266 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:19:16,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 13:19:16,267 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:19:16,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:19:16,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1645463131, now seen corresponding path program 1 times [2021-11-07 13:19:16,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:19:16,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810536300] [2021-11-07 13:19:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:19:16,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:19:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:19:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 13:19:16,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:19:16,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810536300] [2021-11-07 13:19:16,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810536300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:19:16,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:19:16,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:19:16,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733345154] [2021-11-07 13:19:16,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:19:16,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:19:16,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:19:16,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:19:16,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:19:16,658 INFO L87 Difference]: Start difference. First operand 89277 states and 116738 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-11-07 13:19:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:19:18,707 INFO L93 Difference]: Finished difference Result 178552 states and 233480 transitions. [2021-11-07 13:19:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:19:18,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 140 [2021-11-07 13:19:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:19:18,900 INFO L225 Difference]: With dead ends: 178552 [2021-11-07 13:19:18,901 INFO L226 Difference]: Without dead ends: 89285 [2021-11-07 13:19:18,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:19:18,996 INFO L933 BasicCegarLoop]: 7701 mSDtfsCounter, 0 mSDsluCounter, 7696 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15397 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.66ms IncrementalHoareTripleChecker+Time [2021-11-07 13:19:18,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15397 Invalid, 6 Unknown, 0 Unchecked, 10.66ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 10.66ms Time] [2021-11-07 13:19:19,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89285 states. [2021-11-07 13:19:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89285 to 89285. [2021-11-07 13:19:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89285 states, 89060 states have (on average 1.3064675499663148) internal successors, (116354), 89064 states have internal predecessors, (116354), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-07 13:19:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89285 states to 89285 states and 116746 transitions. [2021-11-07 13:19:21,100 INFO L78 Accepts]: Start accepts. Automaton has 89285 states and 116746 transitions. Word has length 140 [2021-11-07 13:19:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:19:21,100 INFO L470 AbstractCegarLoop]: Abstraction has 89285 states and 116746 transitions. [2021-11-07 13:19:21,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-11-07 13:19:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 89285 states and 116746 transitions. [2021-11-07 13:19:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 13:19:21,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:19:21,120 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:19:21,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 13:19:21,121 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:19:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:19:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash 874729565, now seen corresponding path program 1 times [2021-11-07 13:19:21,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:19:21,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420220217] [2021-11-07 13:19:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:19:21,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:19:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:19:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 13:19:21,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:19:21,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420220217] [2021-11-07 13:19:21,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420220217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:19:21,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:19:21,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:19:21,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834909612] [2021-11-07 13:19:21,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:19:21,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:19:21,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:19:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:19:21,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:19:21,528 INFO L87 Difference]: Start difference. First operand 89285 states and 116746 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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)