/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:06:55,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:06:55,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:06:55,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:06:55,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:06:55,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:06:55,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:06:55,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:06:55,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:06:55,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:06:55,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:06:55,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:06:55,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:06:55,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:06:55,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:06:55,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:06:55,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:06:55,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:06:55,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:06:55,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:06:55,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:06:55,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:06:55,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:06:55,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:06:55,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:06:55,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:06:55,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:06:55,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:06:55,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:06:55,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:06:55,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:06:55,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:06:55,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:06:55,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:06:55,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:06:55,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:06:55,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:06:55,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:06:55,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:06:55,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:06:55,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:06:55,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:06:55,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:06:55,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:06:55,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:06:55,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:06:55,234 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:06:55,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:06:55,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:06:55,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:06:55,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:06:55,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:06:55,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:06:55,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:06:55,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:06:55,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:06:55,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:06:55,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:06:55,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:06:55,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:06:55,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:06:55,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:06:55,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:06:55,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:06:55,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:06:55,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:06:55,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:06:55,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:06:55,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:06:55,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:06:55,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:06:55,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:06:55,763 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:06:55,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2020-12-22 13:06:55,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b7bc32af/c0009bce32de41e087d6cf81cfd762c7/FLAG104ce38df [2020-12-22 13:06:56,985 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:06:56,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2020-12-22 13:06:57,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b7bc32af/c0009bce32de41e087d6cf81cfd762c7/FLAG104ce38df [2020-12-22 13:06:57,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b7bc32af/c0009bce32de41e087d6cf81cfd762c7 [2020-12-22 13:06:57,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:06:57,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:06:57,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:06:57,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:06:57,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:06:57,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:06:57" (1/1) ... [2020-12-22 13:06:57,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595e05ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:57, skipping insertion in model container [2020-12-22 13:06:57,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:06:57" (1/1) ... [2020-12-22 13:06:57,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:06:57,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:06:59,032 WARN L226 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2020-12-22 13:07:00,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:07:01,102 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:07:01,301 WARN L226 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2020-12-22 13:07:01,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:07:02,574 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:07:02,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02 WrapperNode [2020-12-22 13:07:02,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:07:02,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:07:02,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:07:02,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:07:02,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (1/1) ... [2020-12-22 13:07:02,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (1/1) ... [2020-12-22 13:07:03,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:07:03,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:07:03,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:07:03,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:07:03,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (1/1) ... [2020-12-22 13:07:03,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (1/1) ... [2020-12-22 13:07:03,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (1/1) ... [2020-12-22 13:07:03,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (1/1) ... [2020-12-22 13:07:04,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (1/1) ... [2020-12-22 13:07:04,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (1/1) ... [2020-12-22 13:07:04,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (1/1) ... [2020-12-22 13:07:04,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:07:04,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:07:04,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:07:04,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:07:04,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:07:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-12-22 13:07:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-12-22 13:07:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure start_cbsend [2020-12-22 13:07:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure start_cbsend [2020-12-22 13:07:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2020-12-22 13:07:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2020-12-22 13:07:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_20 [2020-12-22 13:07:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_20 [2020-12-22 13:07:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:07:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 13:07:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:07:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2020-12-22 13:07:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2020-12-22 13:07:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2020-12-22 13:07:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2020-12-22 13:07:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_18 [2020-12-22 13:07:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_18 [2020-12-22 13:07:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure req_submit [2020-12-22 13:07:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure req_submit [2020-12-22 13:07:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:07:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure read_int_callback [2020-12-22 13:07:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure read_int_callback [2020-12-22 13:07:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:07:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure read_ctrl_callback [2020-12-22 13:07:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ctrl_callback [2020-12-22 13:07:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2020-12-22 13:07:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2020-12-22 13:07:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2020-12-22 13:07:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2020-12-22 13:07:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure int_in_work [2020-12-22 13:07:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure int_in_work [2020-12-22 13:07:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:07:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure atwrite_submit [2020-12-22 13:07:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure atwrite_submit [2020-12-22 13:07:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:07:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:07:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure error_reset [2020-12-22 13:07:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure error_reset [2020-12-22 13:07:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure write_command_callback [2020-12-22 13:07:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure write_command_callback [2020-12-22 13:07:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:07:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:07:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:07:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:07:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure write_ctrl_callback [2020-12-22 13:07:04,621 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ctrl_callback [2020-12-22 13:07:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure read_iso_callback [2020-12-22 13:07:04,622 INFO L138 BoogieDeclarations]: Found implementation of procedure read_iso_callback [2020-12-22 13:07:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:07:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure atread_submit [2020-12-22 13:07:04,622 INFO L138 BoogieDeclarations]: Found implementation of procedure atread_submit [2020-12-22 13:07:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:07:04,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:07:38,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:07:38,103 INFO L299 CfgBuilder]: Removed 2883 assume(true) statements. [2020-12-22 13:07:38,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:07:38 BoogieIcfgContainer [2020-12-22 13:07:38,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:07:38,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:07:38,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:07:38,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:07:38,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:06:57" (1/3) ... [2020-12-22 13:07:38,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45de15aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:07:38, skipping insertion in model container [2020-12-22 13:07:38,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:02" (2/3) ... [2020-12-22 13:07:38,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45de15aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:07:38, skipping insertion in model container [2020-12-22 13:07:38,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:07:38" (3/3) ... [2020-12-22 13:07:38,125 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2020-12-22 13:07:38,134 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:07:38,143 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 13:07:38,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 13:07:38,239 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:07:38,239 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:07:38,239 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:07:38,239 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:07:38,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:07:38,240 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:07:38,240 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:07:38,240 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:07:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states. [2020-12-22 13:07:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 13:07:38,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:38,372 INFO L422 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] [2020-12-22 13:07:38,373 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:38,381 INFO L82 PathProgramCache]: Analyzing trace with hash 431961628, now seen corresponding path program 1 times [2020-12-22 13:07:38,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:38,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654859591] [2020-12-22 13:07:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:07:39,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654859591] [2020-12-22 13:07:39,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:39,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:07:39,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860053649] [2020-12-22 13:07:39,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:39,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:39,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:39,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:39,682 INFO L87 Difference]: Start difference. First operand 3647 states. Second operand 3 states. [2020-12-22 13:07:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:40,058 INFO L93 Difference]: Finished difference Result 7290 states and 11234 transitions. [2020-12-22 13:07:40,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:40,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 13:07:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:40,126 INFO L225 Difference]: With dead ends: 7290 [2020-12-22 13:07:40,126 INFO L226 Difference]: Without dead ends: 3634 [2020-12-22 13:07:40,158 INFO L677 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 [2020-12-22 13:07:40,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2020-12-22 13:07:40,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3634. [2020-12-22 13:07:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3634 states. [2020-12-22 13:07:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5503 transitions. [2020-12-22 13:07:40,415 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5503 transitions. Word has length 36 [2020-12-22 13:07:40,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:40,416 INFO L481 AbstractCegarLoop]: Abstraction has 3634 states and 5503 transitions. [2020-12-22 13:07:40,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:40,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5503 transitions. [2020-12-22 13:07:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 13:07:40,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:40,423 INFO L422 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] [2020-12-22 13:07:40,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:07:40,424 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:40,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:40,428 INFO L82 PathProgramCache]: Analyzing trace with hash 629652148, now seen corresponding path program 1 times [2020-12-22 13:07:40,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:40,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272077167] [2020-12-22 13:07:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:07:41,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272077167] [2020-12-22 13:07:41,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:41,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:07:41,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657969849] [2020-12-22 13:07:41,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:41,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:41,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:41,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:41,084 INFO L87 Difference]: Start difference. First operand 3634 states and 5503 transitions. Second operand 3 states. [2020-12-22 13:07:43,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:43,768 INFO L93 Difference]: Finished difference Result 10756 states and 16336 transitions. [2020-12-22 13:07:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:43,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-22 13:07:43,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:43,836 INFO L225 Difference]: With dead ends: 10756 [2020-12-22 13:07:43,837 INFO L226 Difference]: Without dead ends: 7157 [2020-12-22 13:07:43,854 INFO L677 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 [2020-12-22 13:07:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2020-12-22 13:07:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7157. [2020-12-22 13:07:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7157 states. [2020-12-22 13:07:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 10871 transitions. [2020-12-22 13:07:44,156 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 10871 transitions. Word has length 37 [2020-12-22 13:07:44,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:44,156 INFO L481 AbstractCegarLoop]: Abstraction has 7157 states and 10871 transitions. [2020-12-22 13:07:44,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:44,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 10871 transitions. [2020-12-22 13:07:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 13:07:44,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:44,161 INFO L422 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] [2020-12-22 13:07:44,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:07:44,162 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:44,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:44,163 INFO L82 PathProgramCache]: Analyzing trace with hash -225832876, now seen corresponding path program 1 times [2020-12-22 13:07:44,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:44,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607604416] [2020-12-22 13:07:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:07:44,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607604416] [2020-12-22 13:07:44,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:44,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:07:44,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287159781] [2020-12-22 13:07:44,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:44,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:44,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:44,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:44,847 INFO L87 Difference]: Start difference. First operand 7157 states and 10871 transitions. Second operand 3 states. [2020-12-22 13:07:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:45,689 INFO L93 Difference]: Finished difference Result 21390 states and 32517 transitions. [2020-12-22 13:07:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:45,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 13:07:45,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:45,826 INFO L225 Difference]: With dead ends: 21390 [2020-12-22 13:07:45,826 INFO L226 Difference]: Without dead ends: 14268 [2020-12-22 13:07:45,858 INFO L677 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 [2020-12-22 13:07:45,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14268 states. [2020-12-22 13:07:46,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14268 to 7158. [2020-12-22 13:07:46,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7158 states. [2020-12-22 13:07:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7158 states to 7158 states and 10872 transitions. [2020-12-22 13:07:46,571 INFO L78 Accepts]: Start accepts. Automaton has 7158 states and 10872 transitions. Word has length 40 [2020-12-22 13:07:46,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:46,572 INFO L481 AbstractCegarLoop]: Abstraction has 7158 states and 10872 transitions. [2020-12-22 13:07:46,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 7158 states and 10872 transitions. [2020-12-22 13:07:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 13:07:46,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:46,578 INFO L422 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] [2020-12-22 13:07:46,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:07:46,578 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:46,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:46,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1858289129, now seen corresponding path program 1 times [2020-12-22 13:07:46,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:46,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607238042] [2020-12-22 13:07:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:07:47,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607238042] [2020-12-22 13:07:47,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4023515] [2020-12-22 13:07:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:07:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:51,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 5721 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:07:51,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:07:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:07:51,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:07:51,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:07:51,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018802263] [2020-12-22 13:07:51,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:07:51,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:51,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:07:51,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:07:51,338 INFO L87 Difference]: Start difference. First operand 7158 states and 10872 transitions. Second operand 6 states. [2020-12-22 13:07:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:51,904 INFO L93 Difference]: Finished difference Result 14295 states and 21726 transitions. [2020-12-22 13:07:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:07:51,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-12-22 13:07:51,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:51,964 INFO L225 Difference]: With dead ends: 14295 [2020-12-22 13:07:51,965 INFO L226 Difference]: Without dead ends: 7167 [2020-12-22 13:07:51,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:07:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2020-12-22 13:07:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 7167. [2020-12-22 13:07:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2020-12-22 13:07:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10881 transitions. [2020-12-22 13:07:52,374 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10881 transitions. Word has length 40 [2020-12-22 13:07:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:52,375 INFO L481 AbstractCegarLoop]: Abstraction has 7167 states and 10881 transitions. [2020-12-22 13:07:52,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:07:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10881 transitions. [2020-12-22 13:07:52,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 13:07:52,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:52,380 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:07:52,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:07:52,594 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:52,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:52,596 INFO L82 PathProgramCache]: Analyzing trace with hash -981386577, now seen corresponding path program 2 times [2020-12-22 13:07:52,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:52,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047037880] [2020-12-22 13:07:52,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:07:53,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047037880] [2020-12-22 13:07:53,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259301329] [2020-12-22 13:07:53,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true