./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.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 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 00:57:27,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 00:57:27,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 00:57:27,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 00:57:27,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 00:57:27,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 00:57:27,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 00:57:27,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 00:57:27,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 00:57:27,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 00:57:27,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 00:57:27,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 00:57:27,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 00:57:27,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 00:57:27,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 00:57:27,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 00:57:27,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 00:57:27,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 00:57:27,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 00:57:27,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 00:57:27,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 00:57:27,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 00:57:27,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 00:57:27,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 00:57:27,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 00:57:27,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 00:57:27,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 00:57:27,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 00:57:27,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 00:57:27,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 00:57:27,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 00:57:27,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 00:57:27,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 00:57:27,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 00:57:27,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 00:57:27,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 00:57:27,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 00:57:27,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 00:57:27,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 00:57:27,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 00:57:27,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 00:57:27,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 00:57:27,902 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 00:57:27,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 00:57:27,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 00:57:27,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 00:57:27,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 00:57:27,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 00:57:27,909 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 00:57:27,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 00:57:27,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 00:57:27,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 00:57:27,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 00:57:27,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 00:57:27,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 00:57:27,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 00:57:27,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 00:57:27,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 00:57:27,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 00:57:27,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 00:57:27,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 00:57:27,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 00:57:27,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 00:57:27,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 00:57:27,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 00:57:27,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 00:57:27,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 00:57:27,914 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 00:57:27,914 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 00:57:27,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 00:57:27,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 00:57:27,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 [2021-11-03 00:57:28,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 00:57:28,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 00:57:28,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 00:57:28,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 00:57:28,227 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 00:57:28,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-03 00:57:28,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10187ad88/7dbd271418b7495e911714af44c4cc88/FLAG378f3c756 [2021-11-03 00:57:29,111 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 00:57:29,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-03 00:57:29,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10187ad88/7dbd271418b7495e911714af44c4cc88/FLAG378f3c756 [2021-11-03 00:57:29,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10187ad88/7dbd271418b7495e911714af44c4cc88 [2021-11-03 00:57:29,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 00:57:29,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 00:57:29,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 00:57:29,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 00:57:29,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 00:57:29,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:57:29" (1/1) ... [2021-11-03 00:57:29,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a123607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:29, skipping insertion in model container [2021-11-03 00:57:29,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:57:29" (1/1) ... [2021-11-03 00:57:29,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 00:57:29,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 00:57:31,468 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292189,292202] [2021-11-03 00:57:31,474 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292358,292371] [2021-11-03 00:57:31,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292525,292538] [2021-11-03 00:57:31,482 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292693,292706] [2021-11-03 00:57:31,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 00:57:31,509 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 00:57:31,831 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292189,292202] [2021-11-03 00:57:31,832 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292358,292371] [2021-11-03 00:57:31,833 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292525,292538] [2021-11-03 00:57:31,833 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292693,292706] [2021-11-03 00:57:31,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 00:57:31,944 INFO L208 MainTranslator]: Completed translation [2021-11-03 00:57:31,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31 WrapperNode [2021-11-03 00:57:31,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 00:57:31,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 00:57:31,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 00:57:31,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 00:57:31,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (1/1) ... [2021-11-03 00:57:32,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (1/1) ... [2021-11-03 00:57:33,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 00:57:33,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 00:57:33,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 00:57:33,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 00:57:33,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (1/1) ... [2021-11-03 00:57:33,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (1/1) ... [2021-11-03 00:57:33,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (1/1) ... [2021-11-03 00:57:33,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (1/1) ... [2021-11-03 00:57:33,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (1/1) ... [2021-11-03 00:57:33,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (1/1) ... [2021-11-03 00:57:34,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (1/1) ... [2021-11-03 00:57:34,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 00:57:34,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 00:57:34,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 00:57:34,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 00:57:34,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (1/1) ... [2021-11-03 00:57:34,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 00:57:34,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 00:57:34,197 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) [2021-11-03 00:57:34,204 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 [2021-11-03 00:57:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-03 00:57:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 00:57:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 00:57:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 00:57:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 00:57:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 00:57:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 00:57:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 00:57:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 00:57:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-03 00:57:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 00:57:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 00:57:34,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 00:57:38,578 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-03 00:57:38,578 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 00:57:38,578 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-03 00:57:38,579 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 00:57:38,580 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 00:57:38,580 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-03 00:57:38,580 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 00:57:38,580 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-03 00:57:38,581 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-03 00:57:38,582 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-03 00:57:38,582 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 00:57:38,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 00:57:38,619 INFO L299 CfgBuilder]: Removed 7501 assume(true) statements. [2021-11-03 00:57:38,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:57:38 BoogieIcfgContainer [2021-11-03 00:57:38,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 00:57:38,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 00:57:38,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 00:57:38,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 00:57:38,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:57:29" (1/3) ... [2021-11-03 00:57:38,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d835995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:57:38, skipping insertion in model container [2021-11-03 00:57:38,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:31" (2/3) ... [2021-11-03 00:57:38,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d835995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:57:38, skipping insertion in model container [2021-11-03 00:57:38,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:57:38" (3/3) ... [2021-11-03 00:57:38,636 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2021-11-03 00:57:38,642 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 00:57:38,642 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-11-03 00:57:38,707 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 00:57:38,712 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 [2021-11-03 00:57:38,713 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-11-03 00:57:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 6316 states, 6262 states have (on average 1.2884062599808368) internal successors, (8068), 6315 states have internal predecessors, (8068), 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) [2021-11-03 00:57:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 00:57:38,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:57:38,852 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] [2021-11-03 00:57:38,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 00:57:38,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:57:38,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2083674736, now seen corresponding path program 1 times [2021-11-03 00:57:38,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:57:38,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573630357] [2021-11-03 00:57:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:57:38,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:57:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:57:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:57:39,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:57:39,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573630357] [2021-11-03 00:57:39,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573630357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:57:39,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:57:39,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:57:39,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478906454] [2021-11-03 00:57:39,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:57:39,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:57:39,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:57:39,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:57:39,435 INFO L87 Difference]: Start difference. First operand has 6316 states, 6262 states have (on average 1.2884062599808368) internal successors, (8068), 6315 states have internal predecessors, (8068), 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 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-03 00:57:43,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:57:45,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:58:00,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:58:00,981 INFO L93 Difference]: Finished difference Result 18139 states and 23120 transitions. [2021-11-03 00:58:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:58:00,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-03 00:58:00,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:58:01,052 INFO L225 Difference]: With dead ends: 18139 [2021-11-03 00:58:01,053 INFO L226 Difference]: Without dead ends: 11119 [2021-11-03 00:58:01,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:58:01,157 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 7303 mSDsluCounter, 7660 mSDsCounter, 0 mSdLazyCounter, 14554 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17745.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7303 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 14564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.90ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14554 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20496.18ms IncrementalHoareTripleChecker+Time [2021-11-03 00:58:01,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7303 Valid, 853 Invalid, 14564 Unknown, 0 Unchecked, 68.90ms Time], IncrementalHoareTripleChecker [8 Valid, 14554 Invalid, 2 Unknown, 0 Unchecked, 20496.18ms Time] [2021-11-03 00:58:01,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11119 states. [2021-11-03 00:58:01,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11119 to 11069. [2021-11-03 00:58:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11069 states, 11015 states have (on average 1.2102587380844303) internal successors, (13331), 11068 states have internal predecessors, (13331), 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) [2021-11-03 00:58:01,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 13331 transitions. [2021-11-03 00:58:01,531 INFO L78 Accepts]: Start accepts. Automaton has 11069 states and 13331 transitions. Word has length 52 [2021-11-03 00:58:01,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:58:01,533 INFO L470 AbstractCegarLoop]: Abstraction has 11069 states and 13331 transitions. [2021-11-03 00:58:01,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-03 00:58:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 11069 states and 13331 transitions. [2021-11-03 00:58:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 00:58:01,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:58:01,542 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] [2021-11-03 00:58:01,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 00:58:01,543 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 00:58:01,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:58:01,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2046403671, now seen corresponding path program 1 times [2021-11-03 00:58:01,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:58:01,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756593273] [2021-11-03 00:58:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:58:01,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:58:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:58:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:58:01,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:58:01,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756593273] [2021-11-03 00:58:01,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756593273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:58:01,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:58:01,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:58:01,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537921422] [2021-11-03 00:58:01,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:58:01,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:58:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:58:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:58:01,718 INFO L87 Difference]: Start difference. First operand 11069 states and 13331 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-03 00:58:04,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:58:06,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:58:17,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:58:17,107 INFO L93 Difference]: Finished difference Result 24298 states and 29285 transitions. [2021-11-03 00:58:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:58:17,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-03 00:58:17,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:58:17,155 INFO L225 Difference]: With dead ends: 24298 [2021-11-03 00:58:17,155 INFO L226 Difference]: Without dead ends: 13321 [2021-11-03 00:58:17,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:58:17,177 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1443 mSDsluCounter, 6768 mSDsCounter, 0 mSdLazyCounter, 13722 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13017.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.51ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13722 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14880.65ms IncrementalHoareTripleChecker+Time [2021-11-03 00:58:17,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1443 Valid, 0 Invalid, 13754 Unknown, 0 Unchecked, 28.51ms Time], IncrementalHoareTripleChecker [30 Valid, 13722 Invalid, 2 Unknown, 0 Unchecked, 14880.65ms Time] [2021-11-03 00:58:17,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13321 states. [2021-11-03 00:58:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13321 to 13111. [2021-11-03 00:58:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13111 states, 13057 states have (on average 1.2103852339741135) internal successors, (15804), 13110 states have internal predecessors, (15804), 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) [2021-11-03 00:58:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13111 states to 13111 states and 15804 transitions. [2021-11-03 00:58:17,513 INFO L78 Accepts]: Start accepts. Automaton has 13111 states and 15804 transitions. Word has length 52 [2021-11-03 00:58:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:58:17,514 INFO L470 AbstractCegarLoop]: Abstraction has 13111 states and 15804 transitions. [2021-11-03 00:58:17,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-03 00:58:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13111 states and 15804 transitions. [2021-11-03 00:58:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 00:58:17,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:58:17,518 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] [2021-11-03 00:58:17,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 00:58:17,518 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 00:58:17,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:58:17,519 INFO L85 PathProgramCache]: Analyzing trace with hash -99697309, now seen corresponding path program 1 times [2021-11-03 00:58:17,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:58:17,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169262685] [2021-11-03 00:58:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:58:17,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:58:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:58:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:58:17,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:58:17,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169262685] [2021-11-03 00:58:17,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169262685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:58:17,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:58:17,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:58:17,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546840999] [2021-11-03 00:58:17,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:58:17,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:58:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:58:17,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:58:17,646 INFO L87 Difference]: Start difference. First operand 13111 states and 15804 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-03 00:58:20,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:58:22,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:58:35,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:58:35,068 INFO L93 Difference]: Finished difference Result 37402 states and 45200 transitions. [2021-11-03 00:58:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:58:35,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-03 00:58:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:58:35,148 INFO L225 Difference]: With dead ends: 37402 [2021-11-03 00:58:35,148 INFO L226 Difference]: Without dead ends: 24383 [2021-11-03 00:58:35,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:58:35,190 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6478 mSDsluCounter, 5983 mSDsCounter, 0 mSdLazyCounter, 12978 mSolverCounterSat, 149 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14583.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6478 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.29ms SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 12978 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16803.74ms IncrementalHoareTripleChecker+Time [2021-11-03 00:58:35,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6478 Valid, 0 Invalid, 13129 Unknown, 0 Unchecked, 24.29ms Time], IncrementalHoareTripleChecker [149 Valid, 12978 Invalid, 2 Unknown, 0 Unchecked, 16803.74ms Time] [2021-11-03 00:58:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24383 states. [2021-11-03 00:58:35,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24383 to 22889. [2021-11-03 00:58:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22889 states, 22835 states have (on average 1.2217210422596891) internal successors, (27898), 22888 states have internal predecessors, (27898), 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) [2021-11-03 00:58:35,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22889 states to 22889 states and 27898 transitions. [2021-11-03 00:58:35,840 INFO L78 Accepts]: Start accepts. Automaton has 22889 states and 27898 transitions. Word has length 59 [2021-11-03 00:58:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:58:35,841 INFO L470 AbstractCegarLoop]: Abstraction has 22889 states and 27898 transitions. [2021-11-03 00:58:35,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-03 00:58:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 22889 states and 27898 transitions. [2021-11-03 00:58:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 00:58:35,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:58:35,843 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] [2021-11-03 00:58:35,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 00:58:35,844 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 00:58:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:58:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1953021455, now seen corresponding path program 1 times [2021-11-03 00:58:35,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:58:35,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007630252] [2021-11-03 00:58:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:58:35,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:58:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:58:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:58:35,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:58:35,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007630252] [2021-11-03 00:58:35,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007630252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:58:35,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:58:35,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:58:35,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391434295] [2021-11-03 00:58:35,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:58:35,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:58:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:58:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:58:35,963 INFO L87 Difference]: Start difference. First operand 22889 states and 27898 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-03 00:58:42,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:58:44,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:58:54,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:58:54,927 INFO L93 Difference]: Finished difference Result 56359 states and 68711 transitions. [2021-11-03 00:58:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:58:54,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-03 00:58:54,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:58:55,040 INFO L225 Difference]: With dead ends: 56359 [2021-11-03 00:58:55,041 INFO L226 Difference]: Without dead ends: 33562 [2021-11-03 00:58:55,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:58:55,096 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6542 mSDsluCounter, 6823 mSDsCounter, 0 mSdLazyCounter, 13827 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15575.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6542 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.21ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13827 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18070.81ms IncrementalHoareTripleChecker+Time [2021-11-03 00:58:55,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6542 Valid, 0 Invalid, 13836 Unknown, 0 Unchecked, 25.21ms Time], IncrementalHoareTripleChecker [7 Valid, 13827 Invalid, 2 Unknown, 0 Unchecked, 18070.81ms Time] [2021-11-03 00:58:55,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33562 states. [2021-11-03 00:58:55,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33562 to 33354. [2021-11-03 00:58:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33354 states, 33300 states have (on average 1.2216516516516516) internal successors, (40681), 33353 states have internal predecessors, (40681), 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) [2021-11-03 00:58:56,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33354 states to 33354 states and 40681 transitions. [2021-11-03 00:58:56,105 INFO L78 Accepts]: Start accepts. Automaton has 33354 states and 40681 transitions. Word has length 60 [2021-11-03 00:58:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:58:56,105 INFO L470 AbstractCegarLoop]: Abstraction has 33354 states and 40681 transitions. [2021-11-03 00:58:56,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-03 00:58:56,106 INFO L276 IsEmpty]: Start isEmpty. Operand 33354 states and 40681 transitions. [2021-11-03 00:58:56,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 00:58:56,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:58:56,109 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:58:56,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 00:58:56,110 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 00:58:56,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:58:56,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1648861447, now seen corresponding path program 1 times [2021-11-03 00:58:56,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:58:56,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959610138] [2021-11-03 00:58:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:58:56,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:58:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:58:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:58:56,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:58:56,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959610138] [2021-11-03 00:58:56,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959610138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:58:56,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:58:56,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:58:56,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788819461] [2021-11-03 00:58:56,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:58:56,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:58:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:58:56,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:58:56,255 INFO L87 Difference]: Start difference. First operand 33354 states and 40681 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-03 00:59:00,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:59:02,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:59:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:59:19,652 INFO L93 Difference]: Finished difference Result 94913 states and 115855 transitions. [2021-11-03 00:59:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:59:19,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-03 00:59:19,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:59:19,808 INFO L225 Difference]: With dead ends: 94913 [2021-11-03 00:59:19,809 INFO L226 Difference]: Without dead ends: 61651 [2021-11-03 00:59:19,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:59:19,870 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6636 mSDsluCounter, 6316 mSDsCounter, 0 mSdLazyCounter, 18575 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18683.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6636 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.39ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 18575 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21970.57ms IncrementalHoareTripleChecker+Time [2021-11-03 00:59:19,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6636 Valid, 0 Invalid, 18594 Unknown, 0 Unchecked, 34.39ms Time], IncrementalHoareTripleChecker [17 Valid, 18575 Invalid, 2 Unknown, 0 Unchecked, 21970.57ms Time] [2021-11-03 00:59:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61651 states. [2021-11-03 00:59:20,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61651 to 61393. [2021-11-03 00:59:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61393 states, 61339 states have (on average 1.2215719199856534) internal successors, (74930), 61392 states have internal predecessors, (74930), 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) [2021-11-03 00:59:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61393 states to 61393 states and 74930 transitions. [2021-11-03 00:59:21,245 INFO L78 Accepts]: Start accepts. Automaton has 61393 states and 74930 transitions. Word has length 68 [2021-11-03 00:59:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:59:21,245 INFO L470 AbstractCegarLoop]: Abstraction has 61393 states and 74930 transitions. [2021-11-03 00:59:21,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-03 00:59:21,246 INFO L276 IsEmpty]: Start isEmpty. Operand 61393 states and 74930 transitions. [2021-11-03 00:59:21,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 00:59:21,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:59:21,249 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 00:59:21,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 00:59:21,249 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 00:59:21,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:59:21,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1288308795, now seen corresponding path program 1 times [2021-11-03 00:59:21,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:59:21,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608104663] [2021-11-03 00:59:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:59:21,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:59:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:59:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:59:21,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:59:21,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608104663] [2021-11-03 00:59:21,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608104663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:59:21,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:59:21,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:59:21,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203937993] [2021-11-03 00:59:21,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:59:21,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:59:21,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:59:21,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:59:21,375 INFO L87 Difference]: Start difference. First operand 61393 states and 74930 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-03 00:59:27,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:59:30,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:59:46,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:59:46,317 INFO L93 Difference]: Finished difference Result 143478 states and 175243 transitions. [2021-11-03 00:59:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:59:46,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-03 00:59:46,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:59:46,622 INFO L225 Difference]: With dead ends: 143478 [2021-11-03 00:59:46,623 INFO L226 Difference]: Without dead ends: 102047 [2021-11-03 00:59:46,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:59:46,703 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6570 mSDsluCounter, 6759 mSDsCounter, 0 mSdLazyCounter, 13796 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19211.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6570 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.55ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13796 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22888.81ms IncrementalHoareTripleChecker+Time [2021-11-03 00:59:46,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6570 Valid, 0 Invalid, 13808 Unknown, 0 Unchecked, 36.55ms Time], IncrementalHoareTripleChecker [10 Valid, 13796 Invalid, 2 Unknown, 0 Unchecked, 22888.81ms Time] [2021-11-03 00:59:46,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102047 states. [2021-11-03 00:59:48,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102047 to 101997. [2021-11-03 00:59:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101997 states, 101943 states have (on average 1.2216827050410524) internal successors, (124542), 101996 states have internal predecessors, (124542), 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) [2021-11-03 00:59:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101997 states to 101997 states and 124542 transitions. [2021-11-03 00:59:49,275 INFO L78 Accepts]: Start accepts. Automaton has 101997 states and 124542 transitions. Word has length 83 [2021-11-03 00:59:49,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:59:49,276 INFO L470 AbstractCegarLoop]: Abstraction has 101997 states and 124542 transitions. [2021-11-03 00:59:49,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-03 00:59:49,276 INFO L276 IsEmpty]: Start isEmpty. Operand 101997 states and 124542 transitions. [2021-11-03 00:59:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 00:59:49,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:59:49,279 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-03 00:59:49,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 00:59:49,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 00:59:49,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:59:49,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2072749914, now seen corresponding path program 1 times [2021-11-03 00:59:49,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:59:49,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994413397] [2021-11-03 00:59:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:59:49,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:59:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:59:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:59:49,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:59:49,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994413397] [2021-11-03 00:59:49,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994413397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:59:49,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:59:49,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:59:49,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703760494] [2021-11-03 00:59:49,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:59:49,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:59:49,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:59:49,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:59:49,396 INFO L87 Difference]: Start difference. First operand 101997 states and 124542 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-03 00:59:57,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:00:00,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:00:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:00:20,312 INFO L93 Difference]: Finished difference Result 224654 states and 274307 transitions. [2021-11-03 01:00:20,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 01:00:20,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2021-11-03 01:00:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:00:20,713 INFO L225 Difference]: With dead ends: 224654 [2021-11-03 01:00:20,713 INFO L226 Difference]: Without dead ends: 142619 [2021-11-03 01:00:20,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:00:20,869 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6487 mSDsluCounter, 6831 mSDsCounter, 0 mSdLazyCounter, 20212 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22565.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6487 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20212 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27615.74ms IncrementalHoareTripleChecker+Time [2021-11-03 01:00:20,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6487 Valid, 0 Invalid, 20215 Unknown, 0 Unchecked, 43.25ms Time], IncrementalHoareTripleChecker [1 Valid, 20212 Invalid, 2 Unknown, 0 Unchecked, 27615.74ms Time] [2021-11-03 01:00:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142619 states. [2021-11-03 01:00:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142619 to 142569. [2021-11-03 01:00:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142569 states, 142515 states have (on average 1.221443356839631) internal successors, (174074), 142568 states have internal predecessors, (174074), 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) [2021-11-03 01:00:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142569 states to 142569 states and 174074 transitions. [2021-11-03 01:00:24,852 INFO L78 Accepts]: Start accepts. Automaton has 142569 states and 174074 transitions. Word has length 85 [2021-11-03 01:00:24,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:00:24,852 INFO L470 AbstractCegarLoop]: Abstraction has 142569 states and 174074 transitions. [2021-11-03 01:00:24,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-03 01:00:24,852 INFO L276 IsEmpty]: Start isEmpty. Operand 142569 states and 174074 transitions. [2021-11-03 01:00:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 01:00:24,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:00:24,855 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-03 01:00:24,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 01:00:24,855 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 01:00:24,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:00:24,856 INFO L85 PathProgramCache]: Analyzing trace with hash 78605208, now seen corresponding path program 1 times [2021-11-03 01:00:24,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:00:24,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582883640] [2021-11-03 01:00:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:00:24,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:00:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:00:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 01:00:25,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:00:25,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582883640] [2021-11-03 01:00:25,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582883640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:00:25,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:00:25,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:00:25,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805383920] [2021-11-03 01:00:25,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 01:00:25,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:00:25,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 01:00:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 01:00:25,049 INFO L87 Difference]: Start difference. First operand 142569 states and 174074 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-03 01:00:33,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:00:35,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:01:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:01:00,933 INFO L93 Difference]: Finished difference Result 265135 states and 323741 transitions. [2021-11-03 01:01:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 01:01:00,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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 85 [2021-11-03 01:01:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:01:01,998 INFO L225 Difference]: With dead ends: 265135 [2021-11-03 01:01:01,998 INFO L226 Difference]: Without dead ends: 265129 [2021-11-03 01:01:02,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 01:01:02,121 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6739 mSDsluCounter, 13515 mSDsCounter, 0 mSdLazyCounter, 20453 mSolverCounterSat, 67 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25156.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6739 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.67ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 20453 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31177.05ms IncrementalHoareTripleChecker+Time [2021-11-03 01:01:02,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6739 Valid, 0 Invalid, 20522 Unknown, 0 Unchecked, 79.67ms Time], IncrementalHoareTripleChecker [67 Valid, 20453 Invalid, 2 Unknown, 0 Unchecked, 31177.05ms Time] [2021-11-03 01:01:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265129 states. [2021-11-03 01:01:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265129 to 264947. [2021-11-03 01:01:08,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264947 states, 264893 states have (on average 1.2215271826737588) internal successors, (323574), 264946 states have internal predecessors, (323574), 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) [2021-11-03 01:01:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264947 states to 264947 states and 323574 transitions. [2021-11-03 01:01:09,593 INFO L78 Accepts]: Start accepts. Automaton has 264947 states and 323574 transitions. Word has length 85 [2021-11-03 01:01:09,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:01:09,594 INFO L470 AbstractCegarLoop]: Abstraction has 264947 states and 323574 transitions. [2021-11-03 01:01:09,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-03 01:01:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 264947 states and 323574 transitions. [2021-11-03 01:01:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 01:01:09,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:01:09,597 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-03 01:01:09,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 01:01:09,598 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 01:01:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:01:09,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1769656293, now seen corresponding path program 1 times [2021-11-03 01:01:09,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:01:09,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174803639] [2021-11-03 01:01:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:01:09,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:01:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:01:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 01:01:09,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:01:09,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174803639] [2021-11-03 01:01:09,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174803639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:01:09,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:01:09,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:01:09,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691010310] [2021-11-03 01:01:09,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 01:01:09,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:01:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 01:01:09,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 01:01:09,747 INFO L87 Difference]: Start difference. First operand 264947 states and 323574 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-11-03 01:01:18,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:01:20,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:01:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:01:46,534 INFO L93 Difference]: Finished difference Result 265129 states and 323735 transitions. [2021-11-03 01:01:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 01:01:46,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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 87 [2021-11-03 01:01:46,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:01:47,368 INFO L225 Difference]: With dead ends: 265129 [2021-11-03 01:01:47,368 INFO L226 Difference]: Without dead ends: 265123 [2021-11-03 01:01:47,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.36ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 01:01:47,494 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6728 mSDsluCounter, 13515 mSDsCounter, 0 mSdLazyCounter, 20453 mSolverCounterSat, 70 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25323.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6728 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.35ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 20453 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31619.77ms IncrementalHoareTripleChecker+Time [2021-11-03 01:01:47,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6728 Valid, 0 Invalid, 20525 Unknown, 0 Unchecked, 78.35ms Time], IncrementalHoareTripleChecker [70 Valid, 20453 Invalid, 2 Unknown, 0 Unchecked, 31619.77ms Time] [2021-11-03 01:01:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265123 states. [2021-11-03 01:01:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265123 to 264953. [2021-11-03 01:01:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264953 states, 264899 states have (on average 1.2215221650515857) internal successors, (323580), 264952 states have internal predecessors, (323580), 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) [2021-11-03 01:01:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264953 states to 264953 states and 323580 transitions. [2021-11-03 01:01:56,151 INFO L78 Accepts]: Start accepts. Automaton has 264953 states and 323580 transitions. Word has length 87 [2021-11-03 01:01:56,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:01:56,151 INFO L470 AbstractCegarLoop]: Abstraction has 264953 states and 323580 transitions. [2021-11-03 01:01:56,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-11-03 01:01:56,152 INFO L276 IsEmpty]: Start isEmpty. Operand 264953 states and 323580 transitions. [2021-11-03 01:01:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 01:01:56,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:01:56,154 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-03 01:01:56,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 01:01:56,155 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 01:01:56,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:01:56,155 INFO L85 PathProgramCache]: Analyzing trace with hash 167502110, now seen corresponding path program 1 times [2021-11-03 01:01:56,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:01:56,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937880913] [2021-11-03 01:01:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:01:56,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:01:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:01:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 01:01:56,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:01:56,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937880913] [2021-11-03 01:01:56,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937880913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:01:56,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:01:56,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:01:56,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520973127] [2021-11-03 01:01:56,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 01:01:56,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:01:56,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 01:01:56,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 01:01:56,329 INFO L87 Difference]: Start difference. First operand 264953 states and 323580 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-03 01:02:05,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:02:07,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:02:35,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:02:35,435 INFO L93 Difference]: Finished difference Result 265123 states and 323729 transitions. [2021-11-03 01:02:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 01:02:35,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 89 [2021-11-03 01:02:35,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:02:36,253 INFO L225 Difference]: With dead ends: 265123 [2021-11-03 01:02:36,253 INFO L226 Difference]: Without dead ends: 265117 [2021-11-03 01:02:36,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 01:02:36,378 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6720 mSDsluCounter, 13515 mSDsCounter, 0 mSdLazyCounter, 20453 mSolverCounterSat, 70 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26593.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6720 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.56ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 20453 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33880.82ms IncrementalHoareTripleChecker+Time [2021-11-03 01:02:36,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6720 Valid, 0 Invalid, 20525 Unknown, 0 Unchecked, 72.56ms Time], IncrementalHoareTripleChecker [70 Valid, 20453 Invalid, 2 Unknown, 0 Unchecked, 33880.82ms Time] [2021-11-03 01:02:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265117 states. [2021-11-03 01:02:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265117 to 264959. [2021-11-03 01:02:43,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264959 states, 264905 states have (on average 1.221517147656707) internal successors, (323586), 264958 states have internal predecessors, (323586), 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)