./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-usb-smsc75xx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-usb-smsc75xx.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 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:06:25,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:06:25,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:06:25,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:06:25,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:06:25,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:06:25,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:06:25,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:06:25,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:06:25,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:06:25,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:06:25,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:06:25,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:06:25,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:06:25,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:06:25,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:06:25,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:06:25,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:06:25,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:06:25,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:06:25,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:06:25,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:06:25,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:06:25,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:06:25,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:06:25,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:06:25,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:06:25,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:06:25,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:06:25,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:06:25,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:06:25,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:06:25,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:06:25,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:06:25,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:06:25,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:06:25,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:06:25,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:06:25,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:06:25,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:06:25,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:06:25,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:06:25,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:06:25,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:06:25,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:06:25,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:06:25,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:06:25,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:06:25,137 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:06:25,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:06:25,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:06:25,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:06:25,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:06:25,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:06:25,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:06:25,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:06:25,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:06:25,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:06:25,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:06:25,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:06:25,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:06:25,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:06:25,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:06:25,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:06:25,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:06:25,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:06:25,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:06:25,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:06:25,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:06:25,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:06:25,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:06:25,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 [2021-11-06 19:06:25,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:06:25,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:06:25,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:06:25,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:06:25,331 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:06:25,332 INFO L432 ainManager$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-usb-smsc75xx.cil.i [2021-11-06 19:06:25,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d361dc24/a72f7c673da5472b899f8c2ec79964af/FLAGb2cb230dc [2021-11-06 19:06:25,951 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:06:25,952 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-usb-smsc75xx.cil.i [2021-11-06 19:06:25,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d361dc24/a72f7c673da5472b899f8c2ec79964af/FLAGb2cb230dc [2021-11-06 19:06:26,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d361dc24/a72f7c673da5472b899f8c2ec79964af [2021-11-06 19:06:26,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:06:26,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:06:26,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:06:26,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:06:26,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:06:26,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:06:26" (1/1) ... [2021-11-06 19:06:26,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3c7e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:26, skipping insertion in model container [2021-11-06 19:06:26,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:06:26" (1/1) ... [2021-11-06 19:06:26,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:06:26,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:06:27,867 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-usb-smsc75xx.cil.i[359515,359528] [2021-11-06 19:06:27,869 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-usb-smsc75xx.cil.i[359684,359697] [2021-11-06 19:06:27,869 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-usb-smsc75xx.cil.i[359851,359864] [2021-11-06 19:06:27,870 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-usb-smsc75xx.cil.i[360019,360032] [2021-11-06 19:06:27,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:06:27,918 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:06:28,160 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-usb-smsc75xx.cil.i[359515,359528] [2021-11-06 19:06:28,161 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-usb-smsc75xx.cil.i[359684,359697] [2021-11-06 19:06:28,162 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-usb-smsc75xx.cil.i[359851,359864] [2021-11-06 19:06:28,162 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-usb-smsc75xx.cil.i[360019,360032] [2021-11-06 19:06:28,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:06:28,296 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:06:28,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28 WrapperNode [2021-11-06 19:06:28,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:06:28,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:06:28,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:06:28,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:06:28,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:28,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:06:29,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:06:29,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:06:29,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:06:29,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:29,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:30,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:30,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:30,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:30,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:06:30,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:06:30,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:06:30,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:06:30,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (1/1) ... [2021-11-06 19:06:30,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:06:30,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:06:31,017 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) [2021-11-06 19:06:31,061 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 [2021-11-06 19:06:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2021-11-06 19:06:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:06:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:06:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:06:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:06:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2021-11-06 19:06:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2021-11-06 19:06:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:06:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:06:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:06:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:06:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:06:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:06:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:06:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:06:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:06:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:06:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2021-11-06 19:06:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:07:22,384 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:07:22,384 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:07:22,385 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:07:22,385 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 19:07:22,386 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:07:22,388 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:07:22,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:07:22,432 INFO L299 CfgBuilder]: Removed 7083 assume(true) statements. [2021-11-06 19:07:22,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:22 BoogieIcfgContainer [2021-11-06 19:07:22,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:07:22,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:07:22,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:07:22,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:07:22,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:06:26" (1/3) ... [2021-11-06 19:07:22,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf03883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:22, skipping insertion in model container [2021-11-06 19:07:22,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:28" (2/3) ... [2021-11-06 19:07:22,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf03883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:22, skipping insertion in model container [2021-11-06 19:07:22,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:22" (3/3) ... [2021-11-06 19:07:22,453 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i [2021-11-06 19:07:22,457 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:07:22,458 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2021-11-06 19:07:22,528 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:07:22,533 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 [2021-11-06 19:07:22,534 INFO L340 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2021-11-06 19:07:22,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 10391 states, 10335 states have (on average 1.4625060474117078) internal successors, (15115), 10390 states have internal predecessors, (15115), 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) [2021-11-06 19:07:22,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 19:07:22,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:22,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:22,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 19:07:22,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1069829801, now seen corresponding path program 1 times [2021-11-06 19:07:22,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:22,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116273325] [2021-11-06 19:07:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:22,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:23,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:23,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116273325] [2021-11-06 19:07:23,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116273325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:23,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:23,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:23,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600833879] [2021-11-06 19:07:23,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:23,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:23,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:23,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:23,303 INFO L87 Difference]: Start difference. First operand has 10391 states, 10335 states have (on average 1.4625060474117078) internal successors, (15115), 10390 states have internal predecessors, (15115), 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 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-06 19:07:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:26,158 INFO L93 Difference]: Finished difference Result 30604 states and 44620 transitions. [2021-11-06 19:07:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-06 19:07:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:26,245 INFO L225 Difference]: With dead ends: 30604 [2021-11-06 19:07:26,246 INFO L226 Difference]: Without dead ends: 20213 [2021-11-06 19:07:26,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:26,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20213 states. [2021-11-06 19:07:26,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20213 to 20173. [2021-11-06 19:07:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20173 states, 20117 states have (on average 1.404483769945817) internal successors, (28254), 20172 states have internal predecessors, (28254), 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) [2021-11-06 19:07:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20173 states to 20173 states and 28254 transitions. [2021-11-06 19:07:26,868 INFO L78 Accepts]: Start accepts. Automaton has 20173 states and 28254 transitions. Word has length 69 [2021-11-06 19:07:26,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:26,869 INFO L470 AbstractCegarLoop]: Abstraction has 20173 states and 28254 transitions. [2021-11-06 19:07:26,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-06 19:07:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 20173 states and 28254 transitions. [2021-11-06 19:07:26,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 19:07:26,873 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:26,874 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:26,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:07:26,874 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 19:07:26,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:26,876 INFO L85 PathProgramCache]: Analyzing trace with hash -214538271, now seen corresponding path program 1 times [2021-11-06 19:07:26,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:26,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395393462] [2021-11-06 19:07:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:26,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:27,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:27,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395393462] [2021-11-06 19:07:27,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395393462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:27,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:27,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:27,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040938816] [2021-11-06 19:07:27,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:27,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:27,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:27,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:27,323 INFO L87 Difference]: Start difference. First operand 20173 states and 28254 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-06 19:07:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:30,254 INFO L93 Difference]: Finished difference Result 49228 states and 68995 transitions. [2021-11-06 19:07:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-06 19:07:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:30,454 INFO L225 Difference]: With dead ends: 49228 [2021-11-06 19:07:30,455 INFO L226 Difference]: Without dead ends: 29195 [2021-11-06 19:07:30,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29195 states. [2021-11-06 19:07:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29195 to 28999. [2021-11-06 19:07:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28999 states, 28943 states have (on average 1.4065922675603773) internal successors, (40711), 28998 states have internal predecessors, (40711), 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) [2021-11-06 19:07:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28999 states to 28999 states and 40711 transitions. [2021-11-06 19:07:31,108 INFO L78 Accepts]: Start accepts. Automaton has 28999 states and 40711 transitions. Word has length 79 [2021-11-06 19:07:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:31,110 INFO L470 AbstractCegarLoop]: Abstraction has 28999 states and 40711 transitions. [2021-11-06 19:07:31,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-06 19:07:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 28999 states and 40711 transitions. [2021-11-06 19:07:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 19:07:31,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:31,118 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:31,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:07:31,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 19:07:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:31,125 INFO L85 PathProgramCache]: Analyzing trace with hash -342662859, now seen corresponding path program 1 times [2021-11-06 19:07:31,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:31,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481740871] [2021-11-06 19:07:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:31,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:31,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:31,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481740871] [2021-11-06 19:07:31,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481740871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:31,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:31,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:31,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164831882] [2021-11-06 19:07:31,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:31,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:31,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:31,535 INFO L87 Difference]: Start difference. First operand 28999 states and 40711 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-06 19:07:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:34,496 INFO L93 Difference]: Finished difference Result 67789 states and 95226 transitions. [2021-11-06 19:07:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:34,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2021-11-06 19:07:34,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:34,599 INFO L225 Difference]: With dead ends: 67789 [2021-11-06 19:07:34,600 INFO L226 Difference]: Without dead ends: 48272 [2021-11-06 19:07:34,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48272 states. [2021-11-06 19:07:35,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48272 to 48232. [2021-11-06 19:07:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48232 states, 48176 states have (on average 1.4075265692460976) internal successors, (67809), 48231 states have internal predecessors, (67809), 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) [2021-11-06 19:07:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48232 states to 48232 states and 67809 transitions. [2021-11-06 19:07:35,677 INFO L78 Accepts]: Start accepts. Automaton has 48232 states and 67809 transitions. Word has length 101 [2021-11-06 19:07:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:35,678 INFO L470 AbstractCegarLoop]: Abstraction has 48232 states and 67809 transitions. [2021-11-06 19:07:35,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-06 19:07:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 48232 states and 67809 transitions. [2021-11-06 19:07:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 19:07:35,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:35,681 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:35,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:07:35,682 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 19:07:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1622526537, now seen corresponding path program 1 times [2021-11-06 19:07:35,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:35,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736703301] [2021-11-06 19:07:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:35,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:36,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:36,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736703301] [2021-11-06 19:07:36,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736703301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:36,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:36,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:36,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991720671] [2021-11-06 19:07:36,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:36,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:36,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:36,043 INFO L87 Difference]: Start difference. First operand 48232 states and 67809 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-06 19:07:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:39,103 INFO L93 Difference]: Finished difference Result 106259 states and 149430 transitions. [2021-11-06 19:07:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:39,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2021-11-06 19:07:39,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:39,229 INFO L225 Difference]: With dead ends: 106259 [2021-11-06 19:07:39,229 INFO L226 Difference]: Without dead ends: 67509 [2021-11-06 19:07:39,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67509 states. [2021-11-06 19:07:40,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67509 to 67469. [2021-11-06 19:07:40,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67469 states, 67413 states have (on average 1.4079628558289945) internal successors, (94915), 67468 states have internal predecessors, (94915), 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) [2021-11-06 19:07:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67469 states to 67469 states and 94915 transitions. [2021-11-06 19:07:40,759 INFO L78 Accepts]: Start accepts. Automaton has 67469 states and 94915 transitions. Word has length 101 [2021-11-06 19:07:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:40,760 INFO L470 AbstractCegarLoop]: Abstraction has 67469 states and 94915 transitions. [2021-11-06 19:07:40,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-06 19:07:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 67469 states and 94915 transitions. [2021-11-06 19:07:40,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 19:07:40,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:40,765 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:40,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:07:40,765 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 19:07:40,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1225949564, now seen corresponding path program 1 times [2021-11-06 19:07:40,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:40,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060923366] [2021-11-06 19:07:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:40,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:41,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:41,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060923366] [2021-11-06 19:07:41,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060923366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:41,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:41,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:41,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803245897] [2021-11-06 19:07:41,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:41,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:41,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:41,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:41,122 INFO L87 Difference]: Start difference. First operand 67469 states and 94915 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:42,010 INFO L93 Difference]: Finished difference Result 67469 states and 94915 transitions. [2021-11-06 19:07:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:42,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-06 19:07:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:42,122 INFO L225 Difference]: With dead ends: 67469 [2021-11-06 19:07:42,122 INFO L226 Difference]: Without dead ends: 67463 [2021-11-06 19:07:42,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67463 states. [2021-11-06 19:07:43,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67463 to 67463. [2021-11-06 19:07:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67463 states, 67410 states have (on average 1.407936507936508) internal successors, (94909), 67462 states have internal predecessors, (94909), 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) [2021-11-06 19:07:43,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67463 states to 67463 states and 94909 transitions. [2021-11-06 19:07:43,558 INFO L78 Accepts]: Start accepts. Automaton has 67463 states and 94909 transitions. Word has length 104 [2021-11-06 19:07:43,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:43,558 INFO L470 AbstractCegarLoop]: Abstraction has 67463 states and 94909 transitions. [2021-11-06 19:07:43,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:43,559 INFO L276 IsEmpty]: Start isEmpty. Operand 67463 states and 94909 transitions. [2021-11-06 19:07:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 19:07:43,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:43,563 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:43,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:07:43,565 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 19:07:43,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:43,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1316337177, now seen corresponding path program 1 times [2021-11-06 19:07:43,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:43,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231817677] [2021-11-06 19:07:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:43,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:44,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:44,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231817677] [2021-11-06 19:07:44,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231817677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:44,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:44,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:44,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445205405] [2021-11-06 19:07:44,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:44,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:44,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:44,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:44,061 INFO L87 Difference]: Start difference. First operand 67463 states and 94909 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-06 19:07:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:44,840 INFO L93 Difference]: Finished difference Result 67463 states and 94909 transitions. [2021-11-06 19:07:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:44,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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 106 [2021-11-06 19:07:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:44,946 INFO L225 Difference]: With dead ends: 67463 [2021-11-06 19:07:44,946 INFO L226 Difference]: Without dead ends: 67457 [2021-11-06 19:07:44,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67457 states. [2021-11-06 19:07:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67457 to 67457. [2021-11-06 19:07:46,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67457 states, 67407 states have (on average 1.4079101576987554) internal successors, (94903), 67456 states have internal predecessors, (94903), 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) [2021-11-06 19:07:46,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67457 states to 67457 states and 94903 transitions. [2021-11-06 19:07:46,324 INFO L78 Accepts]: Start accepts. Automaton has 67457 states and 94903 transitions. Word has length 106 [2021-11-06 19:07:46,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:46,324 INFO L470 AbstractCegarLoop]: Abstraction has 67457 states and 94903 transitions. [2021-11-06 19:07:46,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-06 19:07:46,325 INFO L276 IsEmpty]: Start isEmpty. Operand 67457 states and 94903 transitions. [2021-11-06 19:07:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 19:07:46,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:46,329 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:46,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:07:46,329 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 19:07:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2015480266, now seen corresponding path program 1 times [2021-11-06 19:07:46,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:46,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823586278] [2021-11-06 19:07:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:46,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:46,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:46,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823586278] [2021-11-06 19:07:46,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823586278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:46,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:46,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:46,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571335386] [2021-11-06 19:07:46,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:46,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:46,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:46,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:46,782 INFO L87 Difference]: Start difference. First operand 67457 states and 94903 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-06 19:07:47,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:47,566 INFO L93 Difference]: Finished difference Result 67457 states and 94903 transitions. [2021-11-06 19:07:47,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:47,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 19:07:47,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:47,676 INFO L225 Difference]: With dead ends: 67457 [2021-11-06 19:07:47,676 INFO L226 Difference]: Without dead ends: 67451 [2021-11-06 19:07:47,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:47,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67451 states. [2021-11-06 19:07:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67451 to 67451. [2021-11-06 19:07:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67451 states, 67404 states have (on average 1.4078838051154234) internal successors, (94897), 67450 states have internal predecessors, (94897), 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) [2021-11-06 19:07:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67451 states to 67451 states and 94897 transitions. [2021-11-06 19:07:49,080 INFO L78 Accepts]: Start accepts. Automaton has 67451 states and 94897 transitions. Word has length 108 [2021-11-06 19:07:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:49,080 INFO L470 AbstractCegarLoop]: Abstraction has 67451 states and 94897 transitions. [2021-11-06 19:07:49,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-06 19:07:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 67451 states and 94897 transitions. [2021-11-06 19:07:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 19:07:49,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:49,086 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:49,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:07:49,086 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 19:07:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash -153559507, now seen corresponding path program 1 times [2021-11-06 19:07:49,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:49,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098205291] [2021-11-06 19:07:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:49,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:49,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:49,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098205291] [2021-11-06 19:07:49,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098205291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:49,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:49,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:49,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123605326] [2021-11-06 19:07:49,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:49,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:49,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:49,540 INFO L87 Difference]: Start difference. First operand 67451 states and 94897 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:50,429 INFO L93 Difference]: Finished difference Result 67451 states and 94897 transitions. [2021-11-06 19:07:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:50,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-06 19:07:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:50,528 INFO L225 Difference]: With dead ends: 67451 [2021-11-06 19:07:50,529 INFO L226 Difference]: Without dead ends: 67445 [2021-11-06 19:07:50,551 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:50,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67445 states. [2021-11-06 19:07:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67445 to 67445. [2021-11-06 19:07:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67445 states, 67401 states have (on average 1.4078574501861991) internal successors, (94891), 67444 states have internal predecessors, (94891), 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) [2021-11-06 19:07:51,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67445 states to 67445 states and 94891 transitions. [2021-11-06 19:07:51,982 INFO L78 Accepts]: Start accepts. Automaton has 67445 states and 94891 transitions. Word has length 110 [2021-11-06 19:07:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:51,982 INFO L470 AbstractCegarLoop]: Abstraction has 67445 states and 94891 transitions. [2021-11-06 19:07:51,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 67445 states and 94891 transitions. [2021-11-06 19:07:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 19:07:52,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:52,002 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:52,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:07:52,003 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 19:07:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1541642480, now seen corresponding path program 1 times [2021-11-06 19:07:52,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:52,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884882275] [2021-11-06 19:07:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:52,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:52,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:52,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884882275] [2021-11-06 19:07:52,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884882275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:52,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:52,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:52,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783592292] [2021-11-06 19:07:52,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:52,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:52,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:52,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:52,296 INFO L87 Difference]: Start difference. First operand 67445 states and 94891 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-06 19:07:53,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:53,414 INFO L93 Difference]: Finished difference Result 67445 states and 94891 transitions. [2021-11-06 19:07:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:53,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 112 [2021-11-06 19:07:53,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:53,519 INFO L225 Difference]: With dead ends: 67445 [2021-11-06 19:07:53,519 INFO L226 Difference]: Without dead ends: 67439 [2021-11-06 19:07:53,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67439 states. [2021-11-06 19:07:54,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67439 to 67439. [2021-11-06 19:07:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67439 states, 67398 states have (on average 1.407831092910769) internal successors, (94885), 67438 states have internal predecessors, (94885), 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) [2021-11-06 19:07:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67439 states to 67439 states and 94885 transitions. [2021-11-06 19:07:55,019 INFO L78 Accepts]: Start accepts. Automaton has 67439 states and 94885 transitions. Word has length 112 [2021-11-06 19:07:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:55,019 INFO L470 AbstractCegarLoop]: Abstraction has 67439 states and 94885 transitions. [2021-11-06 19:07:55,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-06 19:07:55,020 INFO L276 IsEmpty]: Start isEmpty. Operand 67439 states and 94885 transitions. [2021-11-06 19:07:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 19:07:55,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:55,024 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:07:55,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:07:55,024 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 19:07:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:55,024 INFO L85 PathProgramCache]: Analyzing trace with hash 245449843, now seen corresponding path program 1 times [2021-11-06 19:07:55,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:55,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191167449] [2021-11-06 19:07:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:55,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 19:07:55,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:55,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191167449] [2021-11-06 19:07:55,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191167449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:55,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:55,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:55,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406947915] [2021-11-06 19:07:55,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:55,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:55,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:55,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:55,335 INFO L87 Difference]: Start difference. First operand 67439 states and 94885 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:56,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:56,427 INFO L93 Difference]: Finished difference Result 67439 states and 94885 transitions. [2021-11-06 19:07:56,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:56,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-06 19:07:56,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:56,550 INFO L225 Difference]: With dead ends: 67439 [2021-11-06 19:07:56,550 INFO L226 Difference]: Without dead ends: 67433 [2021-11-06 19:07:56,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67433 states.