./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.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 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 21:56:13,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 21:56:13,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 21:56:13,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 21:56:13,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 21:56:13,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 21:56:13,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 21:56:13,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 21:56:13,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 21:56:13,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 21:56:13,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 21:56:13,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 21:56:13,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 21:56:13,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 21:56:13,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 21:56:13,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 21:56:13,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 21:56:13,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 21:56:13,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 21:56:13,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 21:56:13,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 21:56:13,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 21:56:13,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 21:56:13,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 21:56:13,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 21:56:13,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 21:56:13,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 21:56:13,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 21:56:13,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 21:56:13,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 21:56:13,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 21:56:13,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 21:56:13,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 21:56:13,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 21:56:13,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 21:56:13,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 21:56:13,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 21:56:13,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 21:56:13,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 21:56:13,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 21:56:13,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 21:56:13,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 21:56:13,877 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 21:56:13,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 21:56:13,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 21:56:13,878 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 21:56:13,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 21:56:13,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 21:56:13,880 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 21:56:13,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 21:56:13,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 21:56:13,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 21:56:13,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 21:56:13,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 21:56:13,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 21:56:13,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 21:56:13,881 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 21:56:13,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 21:56:13,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 21:56:13,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 21:56:13,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 21:56:13,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 21:56:13,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 21:56:13,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 21:56:13,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 21:56:13,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 21:56:13,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 21:56:13,890 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 21:56:13,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 21:56:13,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 21:56:13,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 21:56:13,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 [2021-11-05 21:56:14,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 21:56:14,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 21:56:14,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 21:56:14,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 21:56:14,164 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 21:56:14,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2021-11-05 21:56:14,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d95b35b/cbe1bf6e23074a7c80877cd60bee39ba/FLAG016ee00ae [2021-11-05 21:56:14,816 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 21:56:14,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2021-11-05 21:56:14,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d95b35b/cbe1bf6e23074a7c80877cd60bee39ba/FLAG016ee00ae [2021-11-05 21:56:14,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d95b35b/cbe1bf6e23074a7c80877cd60bee39ba [2021-11-05 21:56:14,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 21:56:14,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 21:56:14,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 21:56:14,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 21:56:14,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 21:56:14,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 09:56:14" (1/1) ... [2021-11-05 21:56:15,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4a38b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:14, skipping insertion in model container [2021-11-05 21:56:15,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 09:56:14" (1/1) ... [2021-11-05 21:56:15,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 21:56:15,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 21:56:16,652 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2021-11-05 21:56:16,654 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2021-11-05 21:56:16,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 21:56:16,696 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 21:56:16,908 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2021-11-05 21:56:16,908 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2021-11-05 21:56:16,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 21:56:17,007 INFO L208 MainTranslator]: Completed translation [2021-11-05 21:56:17,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17 WrapperNode [2021-11-05 21:56:17,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 21:56:17,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 21:56:17,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 21:56:17,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 21:56:17,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (1/1) ... [2021-11-05 21:56:17,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (1/1) ... [2021-11-05 21:56:17,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 21:56:17,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 21:56:17,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 21:56:17,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 21:56:17,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (1/1) ... [2021-11-05 21:56:17,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (1/1) ... [2021-11-05 21:56:17,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (1/1) ... [2021-11-05 21:56:17,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (1/1) ... [2021-11-05 21:56:17,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (1/1) ... [2021-11-05 21:56:17,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (1/1) ... [2021-11-05 21:56:17,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (1/1) ... [2021-11-05 21:56:17,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 21:56:17,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 21:56:17,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 21:56:17,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 21:56:17,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (1/1) ... [2021-11-05 21:56:17,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 21:56:17,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 21:56:17,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 21:56:17,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 21:56:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-05 21:56:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 21:56:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 21:56:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 21:56:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 21:56:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 21:56:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 21:56:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 21:56:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 21:56:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 21:56:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 21:56:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 21:56:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 21:56:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 21:56:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 21:56:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 21:56:17,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 21:57:47,135 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 21:57:47,135 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-05 21:57:47,135 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-05 21:57:47,135 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 21:57:47,136 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 21:57:47,136 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 21:57:47,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 21:57:47,162 INFO L299 CfgBuilder]: Removed 2043 assume(true) statements. [2021-11-05 21:57:47,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 09:57:47 BoogieIcfgContainer [2021-11-05 21:57:47,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 21:57:47,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 21:57:47,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 21:57:47,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 21:57:47,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 09:56:14" (1/3) ... [2021-11-05 21:57:47,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9d8b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 09:57:47, skipping insertion in model container [2021-11-05 21:57:47,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:56:17" (2/3) ... [2021-11-05 21:57:47,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9d8b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 09:57:47, skipping insertion in model container [2021-11-05 21:57:47,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 09:57:47" (3/3) ... [2021-11-05 21:57:47,171 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2021-11-05 21:57:47,174 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 21:57:47,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-11-05 21:57:47,211 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 21:57:47,215 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 21:57:47,216 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-11-05 21:57:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 2466 states, 2440 states have (on average 1.4254098360655738) internal successors, (3478), 2465 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 21:57:47,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:57:47,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:57:47,266 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:57:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:57:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 949678794, now seen corresponding path program 1 times [2021-11-05 21:57:47,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:57:47,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482257839] [2021-11-05 21:57:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:57:47,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:57:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:57:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:57:48,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:57:48,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482257839] [2021-11-05 21:57:48,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482257839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:57:48,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:57:48,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:57:48,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762499685] [2021-11-05 21:57:48,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:57:48,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:57:48,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:57:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:57:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:57:48,181 INFO L87 Difference]: Start difference. First operand has 2466 states, 2440 states have (on average 1.4254098360655738) internal successors, (3478), 2465 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:50,339 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 [] [2021-11-05 21:57:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:57:50,937 INFO L93 Difference]: Finished difference Result 5701 states and 8063 transitions. [2021-11-05 21:57:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:57:50,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2021-11-05 21:57:50,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:57:50,973 INFO L225 Difference]: With dead ends: 5701 [2021-11-05 21:57:50,974 INFO L226 Difference]: Without dead ends: 3123 [2021-11-05 21:57:50,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:57:50,992 INFO L933 BasicCegarLoop]: 3161 mSDtfsCounter, 1508 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2482.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 6293 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.73ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2587.48ms IncrementalHoareTripleChecker+Time [2021-11-05 21:57:50,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 6293 Invalid, 64 Unknown, 0 Unchecked, 18.73ms Time], IncrementalHoareTripleChecker [16 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 2587.48ms Time] [2021-11-05 21:57:51,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2021-11-05 21:57:51,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 3097. [2021-11-05 21:57:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 3071 states have (on average 1.3497232171930966) internal successors, (4145), 3096 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4145 transitions. [2021-11-05 21:57:51,132 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4145 transitions. Word has length 93 [2021-11-05 21:57:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:57:51,133 INFO L470 AbstractCegarLoop]: Abstraction has 3097 states and 4145 transitions. [2021-11-05 21:57:51,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4145 transitions. [2021-11-05 21:57:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 21:57:51,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:57:51,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:57:51,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 21:57:51,139 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:57:51,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:57:51,141 INFO L85 PathProgramCache]: Analyzing trace with hash 591792664, now seen corresponding path program 1 times [2021-11-05 21:57:51,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:57:51,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813134390] [2021-11-05 21:57:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:57:51,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:57:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:57:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:57:51,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:57:51,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813134390] [2021-11-05 21:57:51,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813134390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:57:51,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:57:51,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:57:51,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700718163] [2021-11-05 21:57:51,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:57:51,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:57:51,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:57:51,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:57:51,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:57:51,483 INFO L87 Difference]: Start difference. First operand 3097 states and 4145 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:53,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:57:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:57:54,013 INFO L93 Difference]: Finished difference Result 8685 states and 11691 transitions. [2021-11-05 21:57:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:57:54,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 99 [2021-11-05 21:57:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:57:54,033 INFO L225 Difference]: With dead ends: 8685 [2021-11-05 21:57:54,033 INFO L226 Difference]: Without dead ends: 5744 [2021-11-05 21:57:54,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:57:54,040 INFO L933 BasicCegarLoop]: 2811 mSDtfsCounter, 2429 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2315.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2429 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.67ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2424.89ms IncrementalHoareTripleChecker+Time [2021-11-05 21:57:54,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2429 Valid, 5599 Invalid, 39 Unknown, 0 Unchecked, 7.67ms Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2424.89ms Time] [2021-11-05 21:57:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2021-11-05 21:57:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5684. [2021-11-05 21:57:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 5658 states have (on average 1.356486390950866) internal successors, (7675), 5683 states have internal predecessors, (7675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 7675 transitions. [2021-11-05 21:57:54,142 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 7675 transitions. Word has length 99 [2021-11-05 21:57:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:57:54,144 INFO L470 AbstractCegarLoop]: Abstraction has 5684 states and 7675 transitions. [2021-11-05 21:57:54,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:54,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 7675 transitions. [2021-11-05 21:57:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-05 21:57:54,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:57:54,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:57:54,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 21:57:54,154 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:57:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:57:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash -88800783, now seen corresponding path program 1 times [2021-11-05 21:57:54,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:57:54,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506673673] [2021-11-05 21:57:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:57:54,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:57:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:57:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:57:54,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:57:54,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506673673] [2021-11-05 21:57:54,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506673673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:57:54,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:57:54,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:57:54,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170443042] [2021-11-05 21:57:54,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:57:54,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:57:54,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:57:54,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:57:54,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:57:54,442 INFO L87 Difference]: Start difference. First operand 5684 states and 7675 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:56,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:57:57,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:57:57,109 INFO L93 Difference]: Finished difference Result 15804 states and 21469 transitions. [2021-11-05 21:57:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:57:57,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-11-05 21:57:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:57:57,143 INFO L225 Difference]: With dead ends: 15804 [2021-11-05 21:57:57,143 INFO L226 Difference]: Without dead ends: 10276 [2021-11-05 21:57:57,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:57:57,159 INFO L933 BasicCegarLoop]: 2807 mSDtfsCounter, 2318 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2428.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 5581 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.10ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2517.26ms IncrementalHoareTripleChecker+Time [2021-11-05 21:57:57,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 5581 Invalid, 61 Unknown, 0 Unchecked, 7.10ms Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 2517.26ms Time] [2021-11-05 21:57:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10276 states. [2021-11-05 21:57:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10276 to 10204. [2021-11-05 21:57:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10204 states, 10178 states have (on average 1.3642169384947926) internal successors, (13885), 10203 states have internal predecessors, (13885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10204 states to 10204 states and 13885 transitions. [2021-11-05 21:57:57,445 INFO L78 Accepts]: Start accepts. Automaton has 10204 states and 13885 transitions. Word has length 108 [2021-11-05 21:57:57,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:57:57,445 INFO L470 AbstractCegarLoop]: Abstraction has 10204 states and 13885 transitions. [2021-11-05 21:57:57,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 10204 states and 13885 transitions. [2021-11-05 21:57:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-05 21:57:57,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:57:57,454 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:57:57,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 21:57:57,454 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:57:57,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:57:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1652114132, now seen corresponding path program 1 times [2021-11-05 21:57:57,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:57:57,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459551343] [2021-11-05 21:57:57,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:57:57,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:57:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:57:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:57:57,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:57:57,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459551343] [2021-11-05 21:57:57,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459551343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:57:57,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:57:57,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:57:57,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713034876] [2021-11-05 21:57:57,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:57:57,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:57:57,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:57:57,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:57:57,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:57:57,769 INFO L87 Difference]: Start difference. First operand 10204 states and 13885 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:57:59,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:58:00,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:58:00,288 INFO L93 Difference]: Finished difference Result 30260 states and 41265 transitions. [2021-11-05 21:58:00,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:58:00,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2021-11-05 21:58:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:58:00,353 INFO L225 Difference]: With dead ends: 30260 [2021-11-05 21:58:00,353 INFO L226 Difference]: Without dead ends: 20212 [2021-11-05 21:58:00,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:00,374 INFO L933 BasicCegarLoop]: 4111 mSDtfsCounter, 2618 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2208.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2618 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2293.53ms IncrementalHoareTripleChecker+Time [2021-11-05 21:58:00,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2618 Valid, 6916 Invalid, 19 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2293.53ms Time] [2021-11-05 21:58:00,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20212 states. [2021-11-05 21:58:00,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20212 to 20128. [2021-11-05 21:58:00,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20128 states, 20102 states have (on average 1.3666799323450403) internal successors, (27473), 20127 states have internal predecessors, (27473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20128 states to 20128 states and 27473 transitions. [2021-11-05 21:58:00,899 INFO L78 Accepts]: Start accepts. Automaton has 20128 states and 27473 transitions. Word has length 110 [2021-11-05 21:58:00,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:58:00,900 INFO L470 AbstractCegarLoop]: Abstraction has 20128 states and 27473 transitions. [2021-11-05 21:58:00,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:00,901 INFO L276 IsEmpty]: Start isEmpty. Operand 20128 states and 27473 transitions. [2021-11-05 21:58:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 21:58:00,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:58:00,906 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 21:58:00,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 21:58:00,906 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:58:00,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:58:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1415452834, now seen corresponding path program 1 times [2021-11-05 21:58:00,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:58:00,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671440806] [2021-11-05 21:58:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:58:00,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:58:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:58:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:58:01,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:58:01,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671440806] [2021-11-05 21:58:01,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671440806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:58:01,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:58:01,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:58:01,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031302600] [2021-11-05 21:58:01,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:58:01,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:58:01,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:58:01,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:58:01,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:01,203 INFO L87 Difference]: Start difference. First operand 20128 states and 27473 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:03,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:58:03,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:58:03,870 INFO L93 Difference]: Finished difference Result 40677 states and 55546 transitions. [2021-11-05 21:58:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:58:03,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2021-11-05 21:58:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:58:03,920 INFO L225 Difference]: With dead ends: 40677 [2021-11-05 21:58:03,920 INFO L226 Difference]: Without dead ends: 20705 [2021-11-05 21:58:03,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:03,956 INFO L933 BasicCegarLoop]: 2809 mSDtfsCounter, 785 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2322.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 5578 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2409.84ms IncrementalHoareTripleChecker+Time [2021-11-05 21:58:03,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 5578 Invalid, 38 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2409.84ms Time] [2021-11-05 21:58:03,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20705 states. [2021-11-05 21:58:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20705 to 20693. [2021-11-05 21:58:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20693 states, 20667 states have (on average 1.366236028451154) internal successors, (28236), 20692 states have internal predecessors, (28236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20693 states to 20693 states and 28236 transitions. [2021-11-05 21:58:04,556 INFO L78 Accepts]: Start accepts. Automaton has 20693 states and 28236 transitions. Word has length 113 [2021-11-05 21:58:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:58:04,556 INFO L470 AbstractCegarLoop]: Abstraction has 20693 states and 28236 transitions. [2021-11-05 21:58:04,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 20693 states and 28236 transitions. [2021-11-05 21:58:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 21:58:04,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:58:04,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:58:04,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 21:58:04,560 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:58:04,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:58:04,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1522816006, now seen corresponding path program 1 times [2021-11-05 21:58:04,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:58:04,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256804137] [2021-11-05 21:58:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:58:04,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:58:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:58:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:58:04,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:58:04,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256804137] [2021-11-05 21:58:04,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256804137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:58:04,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:58:04,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:58:04,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544714161] [2021-11-05 21:58:04,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:58:04,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:58:04,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:58:04,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:58:04,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:04,885 INFO L87 Difference]: Start difference. First operand 20693 states and 28236 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:07,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:58:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:58:07,842 INFO L93 Difference]: Finished difference Result 55687 states and 76231 transitions. [2021-11-05 21:58:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:58:07,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2021-11-05 21:58:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:58:07,915 INFO L225 Difference]: With dead ends: 55687 [2021-11-05 21:58:07,915 INFO L226 Difference]: Without dead ends: 35150 [2021-11-05 21:58:07,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:07,958 INFO L933 BasicCegarLoop]: 3115 mSDtfsCounter, 2181 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2431.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.26ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2525.98ms IncrementalHoareTripleChecker+Time [2021-11-05 21:58:07,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2181 Valid, 5890 Invalid, 61 Unknown, 0 Unchecked, 5.26ms Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 2525.98ms Time] [2021-11-05 21:58:07,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35150 states. [2021-11-05 21:58:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35150 to 35042. [2021-11-05 21:58:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35042 states, 35016 states have (on average 1.3688313913639478) internal successors, (47931), 35041 states have internal predecessors, (47931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35042 states to 35042 states and 47931 transitions. [2021-11-05 21:58:08,806 INFO L78 Accepts]: Start accepts. Automaton has 35042 states and 47931 transitions. Word has length 115 [2021-11-05 21:58:08,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:58:08,807 INFO L470 AbstractCegarLoop]: Abstraction has 35042 states and 47931 transitions. [2021-11-05 21:58:08,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 35042 states and 47931 transitions. [2021-11-05 21:58:08,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-05 21:58:08,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:58:08,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:58:08,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 21:58:08,810 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:58:08,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:58:08,810 INFO L85 PathProgramCache]: Analyzing trace with hash -355735077, now seen corresponding path program 1 times [2021-11-05 21:58:08,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:58:08,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93043097] [2021-11-05 21:58:08,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:58:08,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:58:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:58:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:58:09,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:58:09,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93043097] [2021-11-05 21:58:09,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93043097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:58:09,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:58:09,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:58:09,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178778351] [2021-11-05 21:58:09,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:58:09,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:58:09,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:58:09,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:58:09,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:09,185 INFO L87 Difference]: Start difference. First operand 35042 states and 47931 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:11,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:58:12,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:58:12,243 INFO L93 Difference]: Finished difference Result 99190 states and 135629 transitions. [2021-11-05 21:58:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:58:12,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 [2021-11-05 21:58:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:58:12,376 INFO L225 Difference]: With dead ends: 99190 [2021-11-05 21:58:12,376 INFO L226 Difference]: Without dead ends: 64304 [2021-11-05 21:58:12,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:12,440 INFO L933 BasicCegarLoop]: 3010 mSDtfsCounter, 2395 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2298.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 5799 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.87ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2374.77ms IncrementalHoareTripleChecker+Time [2021-11-05 21:58:12,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2395 Valid, 5799 Invalid, 39 Unknown, 0 Unchecked, 4.87ms Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2374.77ms Time] [2021-11-05 21:58:12,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64304 states. [2021-11-05 21:58:13,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64304 to 64128. [2021-11-05 21:58:13,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64128 states, 64102 states have (on average 1.3658856197934541) internal successors, (87556), 64127 states have internal predecessors, (87556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64128 states to 64128 states and 87556 transitions. [2021-11-05 21:58:13,864 INFO L78 Accepts]: Start accepts. Automaton has 64128 states and 87556 transitions. Word has length 118 [2021-11-05 21:58:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:58:13,864 INFO L470 AbstractCegarLoop]: Abstraction has 64128 states and 87556 transitions. [2021-11-05 21:58:13,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand 64128 states and 87556 transitions. [2021-11-05 21:58:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-05 21:58:13,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:58:13,875 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:58:13,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 21:58:13,876 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:58:13,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:58:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1202251336, now seen corresponding path program 1 times [2021-11-05 21:58:13,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:58:13,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560646120] [2021-11-05 21:58:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:58:13,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:58:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:58:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 21:58:14,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:58:14,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560646120] [2021-11-05 21:58:14,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560646120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:58:14,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:58:14,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:58:14,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983942081] [2021-11-05 21:58:14,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:58:14,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:58:14,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:58:14,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:58:14,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:14,296 INFO L87 Difference]: Start difference. First operand 64128 states and 87556 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:58:15,929 INFO L93 Difference]: Finished difference Result 145192 states and 197976 transitions. [2021-11-05 21:58:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:58:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 145 [2021-11-05 21:58:15,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:58:16,082 INFO L225 Difference]: With dead ends: 145192 [2021-11-05 21:58:16,082 INFO L226 Difference]: Without dead ends: 81300 [2021-11-05 21:58:16,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:16,161 INFO L933 BasicCegarLoop]: 2793 mSDtfsCounter, 2701 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 345.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2701 SdHoareTripleChecker+Valid, 4207 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 374.41ms IncrementalHoareTripleChecker+Time [2021-11-05 21:58:16,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2701 Valid, 4207 Invalid, 52 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [18 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 374.41ms Time] [2021-11-05 21:58:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81300 states. [2021-11-05 21:58:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81300 to 81184. [2021-11-05 21:58:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81184 states, 81158 states have (on average 1.362133123043939) internal successors, (110548), 81183 states have internal predecessors, (110548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81184 states to 81184 states and 110548 transitions. [2021-11-05 21:58:17,919 INFO L78 Accepts]: Start accepts. Automaton has 81184 states and 110548 transitions. Word has length 145 [2021-11-05 21:58:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:58:17,919 INFO L470 AbstractCegarLoop]: Abstraction has 81184 states and 110548 transitions. [2021-11-05 21:58:17,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 81184 states and 110548 transitions. [2021-11-05 21:58:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-05 21:58:17,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:58:17,931 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:58:17,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 21:58:17,931 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:58:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:58:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1522539017, now seen corresponding path program 1 times [2021-11-05 21:58:17,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:58:17,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171722568] [2021-11-05 21:58:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:58:17,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:58:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:58:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:58:18,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:58:18,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171722568] [2021-11-05 21:58:18,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171722568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:58:18,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:58:18,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:58:18,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321037493] [2021-11-05 21:58:18,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:58:18,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:58:18,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:58:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:58:18,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:18,233 INFO L87 Difference]: Start difference. First operand 81184 states and 110548 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:20,371 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 [] [2021-11-05 21:58:23,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:58:23,227 INFO L93 Difference]: Finished difference Result 239864 states and 327512 transitions. [2021-11-05 21:58:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:58:23,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 145 [2021-11-05 21:58:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:58:23,572 INFO L225 Difference]: With dead ends: 239864 [2021-11-05 21:58:23,572 INFO L226 Difference]: Without dead ends: 158916 [2021-11-05 21:58:23,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:23,668 INFO L933 BasicCegarLoop]: 4084 mSDtfsCounter, 2579 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2440.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 6873 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.16ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2509.16ms IncrementalHoareTripleChecker+Time [2021-11-05 21:58:23,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2579 Valid, 6873 Invalid, 35 Unknown, 0 Unchecked, 6.16ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2509.16ms Time] [2021-11-05 21:58:23,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158916 states. [2021-11-05 21:58:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158916 to 158864. [2021-11-05 21:58:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158864 states, 158838 states have (on average 1.3644342034022086) internal successors, (216724), 158863 states have internal predecessors, (216724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158864 states to 158864 states and 216724 transitions. [2021-11-05 21:58:27,567 INFO L78 Accepts]: Start accepts. Automaton has 158864 states and 216724 transitions. Word has length 145 [2021-11-05 21:58:27,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:58:27,567 INFO L470 AbstractCegarLoop]: Abstraction has 158864 states and 216724 transitions. [2021-11-05 21:58:27,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:27,567 INFO L276 IsEmpty]: Start isEmpty. Operand 158864 states and 216724 transitions. [2021-11-05 21:58:27,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-05 21:58:27,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:58:27,578 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:58:27,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 21:58:27,578 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:58:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:58:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1966439691, now seen corresponding path program 1 times [2021-11-05 21:58:27,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:58:27,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307862551] [2021-11-05 21:58:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:58:27,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:58:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:58:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:58:27,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:58:27,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307862551] [2021-11-05 21:58:27,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307862551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:58:27,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:58:27,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:58:27,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562298926] [2021-11-05 21:58:27,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:58:27,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:58:27,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:58:27,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:58:27,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:27,843 INFO L87 Difference]: Start difference. First operand 158864 states and 216724 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:29,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:58:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:58:34,282 INFO L93 Difference]: Finished difference Result 395320 states and 539960 transitions. [2021-11-05 21:58:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:58:34,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 145 [2021-11-05 21:58:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:58:34,801 INFO L225 Difference]: With dead ends: 395320 [2021-11-05 21:58:34,801 INFO L226 Difference]: Without dead ends: 235629 [2021-11-05 21:58:34,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:34,960 INFO L933 BasicCegarLoop]: 5394 mSDtfsCounter, 2575 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2305.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2575 SdHoareTripleChecker+Valid, 8187 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.98ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2393.23ms IncrementalHoareTripleChecker+Time [2021-11-05 21:58:34,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2575 Valid, 8187 Invalid, 36 Unknown, 0 Unchecked, 6.98ms Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2393.23ms Time] [2021-11-05 21:58:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235629 states. [2021-11-05 21:58:39,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235629 to 235577. [2021-11-05 21:58:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235577 states, 235551 states have (on average 1.3660948159846487) internal successors, (321785), 235576 states have internal predecessors, (321785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235577 states to 235577 states and 321785 transitions. [2021-11-05 21:58:40,347 INFO L78 Accepts]: Start accepts. Automaton has 235577 states and 321785 transitions. Word has length 145 [2021-11-05 21:58:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:58:40,348 INFO L470 AbstractCegarLoop]: Abstraction has 235577 states and 321785 transitions. [2021-11-05 21:58:40,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 235577 states and 321785 transitions. [2021-11-05 21:58:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-05 21:58:40,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:58:40,353 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:58:40,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 21:58:40,354 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-05 21:58:40,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:58:40,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1079319639, now seen corresponding path program 1 times [2021-11-05 21:58:40,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:58:40,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981157952] [2021-11-05 21:58:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:58:40,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:58:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:58:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 21:58:40,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:58:40,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981157952] [2021-11-05 21:58:40,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981157952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:58:40,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:58:40,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:58:40,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789217792] [2021-11-05 21:58:40,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:58:40,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:58:40,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:58:40,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:58:40,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:58:40,978 INFO L87 Difference]: Start difference. First operand 235577 states and 321785 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:58:43,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []