/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--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:08:52,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:08:52,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:08:52,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:08:52,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:08:52,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:08:52,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:08:52,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:08:52,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:08:52,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:08:52,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:08:52,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:08:52,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:08:52,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:08:52,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:08:52,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:08:52,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:08:52,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:08:52,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:08:52,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:08:52,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:08:52,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:08:52,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:08:52,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:08:52,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:08:52,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:08:52,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:08:52,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:08:52,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:08:52,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:08:52,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:08:52,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:08:52,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:08:52,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:08:52,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:08:52,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:08:52,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:08:52,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:08:52,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:08:52,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:08:52,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:08:52,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:08:52,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:08:52,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:08:52,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:08:52,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:08:52,673 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:08:52,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:08:52,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:08:52,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:08:52,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:08:52,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:08:52,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:08:52,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:08:52,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:08:52,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:08:52,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:08:52,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:08:52,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:08:52,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:08:52,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:08:52,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:08:52,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:08:52,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:08:52,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:08:52,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:08:52,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:08:52,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:08:53,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:08:53,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:08:53,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:08:53,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:08:53,105 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:08:53,107 INFO L432 ainManager$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--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2020-12-22 13:08:53,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/502b823f8/7fc3465c8d9b4addb504724a4e54e2fb/FLAG5a5be94df [2020-12-22 13:08:54,356 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:08:54,357 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--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2020-12-22 13:08:54,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/502b823f8/7fc3465c8d9b4addb504724a4e54e2fb/FLAG5a5be94df [2020-12-22 13:08:54,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/502b823f8/7fc3465c8d9b4addb504724a4e54e2fb [2020-12-22 13:08:54,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:08:54,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:08:54,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:08:54,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:08:54,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:08:54,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:08:54" (1/1) ... [2020-12-22 13:08:54,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79da41e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:54, skipping insertion in model container [2020-12-22 13:08:54,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:08:54" (1/1) ... [2020-12-22 13:08:54,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:08:54,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:08:56,038 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--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i[196736,196749] [2020-12-22 13:08:56,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:08:56,978 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:08:57,205 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--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i[196736,196749] [2020-12-22 13:08:57,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:08:57,787 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:08:57,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57 WrapperNode [2020-12-22 13:08:57,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:08:57,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:08:57,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:08:57,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:08:57,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (1/1) ... [2020-12-22 13:08:57,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (1/1) ... [2020-12-22 13:08:58,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:08:58,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:08:58,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:08:58,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:08:58,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (1/1) ... [2020-12-22 13:08:58,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (1/1) ... [2020-12-22 13:08:58,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (1/1) ... [2020-12-22 13:08:58,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (1/1) ... [2020-12-22 13:08:58,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (1/1) ... [2020-12-22 13:08:58,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (1/1) ... [2020-12-22 13:08:58,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (1/1) ... [2020-12-22 13:08:58,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:08:58,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:08:58,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:08:58,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:08:58,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (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 13:08:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:08:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:08:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2020-12-22 13:08:58,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2020-12-22 13:08:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-12-22 13:08:58,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-12-22 13:08:58,941 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_sec_feed [2020-12-22 13:08:58,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_sec_feed [2020-12-22 13:08:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2020-12-22 13:08:58,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2020-12-22 13:08:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_process_urb [2020-12-22 13:08:58,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_process_urb [2020-12-22 13:08:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:08:58,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:08:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_feed [2020-12-22 13:08:58,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_feed [2020-12-22 13:08:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:08:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:08:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2020-12-22 13:08:58,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2020-12-22 13:08:58,943 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_ts_feed [2020-12-22 13:08:58,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_ts_feed [2020-12-22 13:08:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2020-12-22 13:08:58,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2020-12-22 13:08:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:08:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:08:58,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2020-12-22 13:08:58,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2020-12-22 13:08:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2020-12-22 13:08:58,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2020-12-22 13:08:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2020-12-22 13:08:58,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2020-12-22 13:08:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2020-12-22 13:08:58,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2020-12-22 13:08:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:08:58,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:08:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:08:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:08:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:08:58,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:08:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 13:08:58,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 13:08:58,946 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_init_rc [2020-12-22 13:08:58,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_init_rc [2020-12-22 13:08:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:08:58,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:08:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2020-12-22 13:08:58,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2020-12-22 13:08:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_handle_irq [2020-12-22 13:08:58,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_handle_irq [2020-12-22 13:08:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:08:58,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:08:58,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:09:18,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:09:18,925 INFO L299 CfgBuilder]: Removed 1159 assume(true) statements. [2020-12-22 13:09:18,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:09:18 BoogieIcfgContainer [2020-12-22 13:09:18,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:09:18,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:09:18,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:09:18,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:09:18,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:08:54" (1/3) ... [2020-12-22 13:09:18,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dac6e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:09:18, skipping insertion in model container [2020-12-22 13:09:18,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:57" (2/3) ... [2020-12-22 13:09:18,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dac6e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:09:18, skipping insertion in model container [2020-12-22 13:09:18,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:09:18" (3/3) ... [2020-12-22 13:09:18,939 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2020-12-22 13:09:18,945 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:09:18,952 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 13:09:18,973 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 13:09:19,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:09:19,010 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:09:19,010 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:09:19,010 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:09:19,010 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:09:19,010 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:09:19,011 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:09:19,011 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:09:19,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states. [2020-12-22 13:09:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 13:09:19,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:19,061 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] [2020-12-22 13:09:19,062 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 13:09:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:19,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1596431133, now seen corresponding path program 1 times [2020-12-22 13:09:19,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:19,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188649606] [2020-12-22 13:09:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:19,862 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 13:09:19,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188649606] [2020-12-22 13:09:19,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:19,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:09:19,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680915212] [2020-12-22 13:09:19,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:19,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:19,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:19,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:19,886 INFO L87 Difference]: Start difference. First operand 1556 states. Second operand 3 states. [2020-12-22 13:09:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:20,093 INFO L93 Difference]: Finished difference Result 3108 states and 4456 transitions. [2020-12-22 13:09:20,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:20,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 13:09:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:20,130 INFO L225 Difference]: With dead ends: 3108 [2020-12-22 13:09:20,131 INFO L226 Difference]: Without dead ends: 1544 [2020-12-22 13:09:20,146 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 13:09:20,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2020-12-22 13:09:20,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2020-12-22 13:09:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-12-22 13:09:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2159 transitions. [2020-12-22 13:09:20,284 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2159 transitions. Word has length 25 [2020-12-22 13:09:20,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:20,285 INFO L481 AbstractCegarLoop]: Abstraction has 1544 states and 2159 transitions. [2020-12-22 13:09:20,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:20,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2159 transitions. [2020-12-22 13:09:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 13:09:20,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:20,287 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] [2020-12-22 13:09:20,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:09:20,288 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 13:09:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:20,289 INFO L82 PathProgramCache]: Analyzing trace with hash 749935913, now seen corresponding path program 1 times [2020-12-22 13:09:20,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:20,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331346784] [2020-12-22 13:09:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:20,541 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 13:09:20,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331346784] [2020-12-22 13:09:20,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:20,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:09:20,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88283632] [2020-12-22 13:09:20,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:20,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:20,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:20,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:20,552 INFO L87 Difference]: Start difference. First operand 1544 states and 2159 transitions. Second operand 3 states. [2020-12-22 13:09:22,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:22,848 INFO L93 Difference]: Finished difference Result 4543 states and 6375 transitions. [2020-12-22 13:09:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:22,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 13:09:22,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:22,874 INFO L225 Difference]: With dead ends: 4543 [2020-12-22 13:09:22,874 INFO L226 Difference]: Without dead ends: 3030 [2020-12-22 13:09:22,883 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 13:09:22,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2020-12-22 13:09:22,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 3030. [2020-12-22 13:09:22,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2020-12-22 13:09:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 4250 transitions. [2020-12-22 13:09:22,998 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 4250 transitions. Word has length 26 [2020-12-22 13:09:22,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:22,999 INFO L481 AbstractCegarLoop]: Abstraction has 3030 states and 4250 transitions. [2020-12-22 13:09:22,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 4250 transitions. [2020-12-22 13:09:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 13:09:23,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:23,001 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] [2020-12-22 13:09:23,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:09:23,002 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 13:09:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:23,003 INFO L82 PathProgramCache]: Analyzing trace with hash 393012970, now seen corresponding path program 1 times [2020-12-22 13:09:23,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:23,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167317404] [2020-12-22 13:09:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:23,293 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 13:09:23,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167317404] [2020-12-22 13:09:23,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:23,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:09:23,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716665880] [2020-12-22 13:09:23,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:23,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:23,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:23,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:23,310 INFO L87 Difference]: Start difference. First operand 3030 states and 4250 transitions. Second operand 3 states. [2020-12-22 13:09:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:23,468 INFO L93 Difference]: Finished difference Result 3060 states and 4278 transitions. [2020-12-22 13:09:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:23,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-12-22 13:09:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:23,491 INFO L225 Difference]: With dead ends: 3060 [2020-12-22 13:09:23,491 INFO L226 Difference]: Without dead ends: 3045 [2020-12-22 13:09:23,493 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 13:09:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2020-12-22 13:09:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3030. [2020-12-22 13:09:23,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2020-12-22 13:09:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 4249 transitions. [2020-12-22 13:09:23,741 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 4249 transitions. Word has length 33 [2020-12-22 13:09:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:23,742 INFO L481 AbstractCegarLoop]: Abstraction has 3030 states and 4249 transitions. [2020-12-22 13:09:23,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 4249 transitions. [2020-12-22 13:09:23,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 13:09:23,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:23,748 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] [2020-12-22 13:09:23,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:09:23,749 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 13:09:23,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:23,749 INFO L82 PathProgramCache]: Analyzing trace with hash 393072552, now seen corresponding path program 1 times [2020-12-22 13:09:23,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:23,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749754306] [2020-12-22 13:09:23,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:24,356 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 13:09:24,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749754306] [2020-12-22 13:09:24,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:24,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:09:24,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695364444] [2020-12-22 13:09:24,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:24,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:24,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:24,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:24,361 INFO L87 Difference]: Start difference. First operand 3030 states and 4249 transitions. Second operand 3 states. [2020-12-22 13:09:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:24,781 INFO L93 Difference]: Finished difference Result 9026 states and 12920 transitions. [2020-12-22 13:09:24,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:24,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-12-22 13:09:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:24,833 INFO L225 Difference]: With dead ends: 9026 [2020-12-22 13:09:24,834 INFO L226 Difference]: Without dead ends: 6027 [2020-12-22 13:09:24,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:09:24,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6027 states. [2020-12-22 13:09:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6027 to 6015. [2020-12-22 13:09:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6015 states. [2020-12-22 13:09:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6015 states to 6015 states and 8562 transitions. [2020-12-22 13:09:25,164 INFO L78 Accepts]: Start accepts. Automaton has 6015 states and 8562 transitions. Word has length 33 [2020-12-22 13:09:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:25,165 INFO L481 AbstractCegarLoop]: Abstraction has 6015 states and 8562 transitions. [2020-12-22 13:09:25,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:25,165 INFO L276 IsEmpty]: Start isEmpty. Operand 6015 states and 8562 transitions. [2020-12-22 13:09:25,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 13:09:25,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:25,169 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] [2020-12-22 13:09:25,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:09:25,169 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 13:09:25,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:25,170 INFO L82 PathProgramCache]: Analyzing trace with hash -699649290, now seen corresponding path program 1 times [2020-12-22 13:09:25,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:25,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863300741] [2020-12-22 13:09:25,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:25,545 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 13:09:25,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863300741] [2020-12-22 13:09:25,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:25,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:09:25,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597848697] [2020-12-22 13:09:25,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:25,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:25,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:25,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:25,547 INFO L87 Difference]: Start difference. First operand 6015 states and 8562 transitions. Second operand 3 states. [2020-12-22 13:09:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:25,732 INFO L93 Difference]: Finished difference Result 6015 states and 8562 transitions. [2020-12-22 13:09:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:25,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-22 13:09:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:25,773 INFO L225 Difference]: With dead ends: 6015 [2020-12-22 13:09:25,773 INFO L226 Difference]: Without dead ends: 6013 [2020-12-22 13:09:25,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:09:25,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6013 states. [2020-12-22 13:09:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6013 to 6013. [2020-12-22 13:09:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6013 states. [2020-12-22 13:09:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6013 states to 6013 states and 8560 transitions. [2020-12-22 13:09:26,150 INFO L78 Accepts]: Start accepts. Automaton has 6013 states and 8560 transitions. Word has length 34 [2020-12-22 13:09:26,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:26,151 INFO L481 AbstractCegarLoop]: Abstraction has 6013 states and 8560 transitions. [2020-12-22 13:09:26,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6013 states and 8560 transitions. [2020-12-22 13:09:26,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 13:09:26,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:26,152 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] [2020-12-22 13:09:26,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:09:26,153 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:26,153 INFO L82 PathProgramCache]: Analyzing trace with hash -214288014, now seen corresponding path program 1 times [2020-12-22 13:09:26,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:26,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218872749] [2020-12-22 13:09:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:26,356 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 13:09:26,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218872749] [2020-12-22 13:09:26,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:26,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:09:26,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237036450] [2020-12-22 13:09:26,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:26,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:26,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:26,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:26,359 INFO L87 Difference]: Start difference. First operand 6013 states and 8560 transitions. Second operand 3 states. [2020-12-22 13:09:26,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:26,543 INFO L93 Difference]: Finished difference Result 6013 states and 8560 transitions. [2020-12-22 13:09:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:26,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-22 13:09:26,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:26,578 INFO L225 Difference]: With dead ends: 6013 [2020-12-22 13:09:26,579 INFO L226 Difference]: Without dead ends: 6011 [2020-12-22 13:09:26,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:09:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2020-12-22 13:09:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 6011. [2020-12-22 13:09:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6011 states. [2020-12-22 13:09:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 8558 transitions. [2020-12-22 13:09:26,869 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 8558 transitions. Word has length 35 [2020-12-22 13:09:26,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:26,870 INFO L481 AbstractCegarLoop]: Abstraction has 6011 states and 8558 transitions. [2020-12-22 13:09:26,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 8558 transitions. [2020-12-22 13:09:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 13:09:26,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:26,871 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 13:09:26,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:09:26,872 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:26,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1947009664, now seen corresponding path program 1 times [2020-12-22 13:09:26,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:26,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269239701] [2020-12-22 13:09:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:27,113 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 13:09:27,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269239701] [2020-12-22 13:09:27,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:27,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:09:27,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828134612] [2020-12-22 13:09:27,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:27,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:27,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:27,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:27,116 INFO L87 Difference]: Start difference. First operand 6011 states and 8558 transitions. Second operand 3 states. [2020-12-22 13:09:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:27,324 INFO L93 Difference]: Finished difference Result 6011 states and 8558 transitions. [2020-12-22 13:09:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:27,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 13:09:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:27,365 INFO L225 Difference]: With dead ends: 6011 [2020-12-22 13:09:27,365 INFO L226 Difference]: Without dead ends: 6009 [2020-12-22 13:09:27,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:09:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6009 states. [2020-12-22 13:09:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6009 to 6009. [2020-12-22 13:09:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6009 states. [2020-12-22 13:09:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 8556 transitions. [2020-12-22 13:09:27,767 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 8556 transitions. Word has length 36 [2020-12-22 13:09:27,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:27,768 INFO L481 AbstractCegarLoop]: Abstraction has 6009 states and 8556 transitions. [2020-12-22 13:09:27,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 8556 transitions. [2020-12-22 13:09:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 13:09:27,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:27,772 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 13:09:27,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:09:27,772 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:27,773 INFO L82 PathProgramCache]: Analyzing trace with hash 227760956, now seen corresponding path program 1 times [2020-12-22 13:09:27,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:27,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523103203] [2020-12-22 13:09:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:28,009 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 13:09:28,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523103203] [2020-12-22 13:09:28,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:28,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:09:28,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607698944] [2020-12-22 13:09:28,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:28,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:28,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:28,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:28,013 INFO L87 Difference]: Start difference. First operand 6009 states and 8556 transitions. Second operand 3 states. [2020-12-22 13:09:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:28,223 INFO L93 Difference]: Finished difference Result 6009 states and 8556 transitions. [2020-12-22 13:09:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:28,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-22 13:09:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:28,253 INFO L225 Difference]: With dead ends: 6009 [2020-12-22 13:09:28,257 INFO L226 Difference]: Without dead ends: 6000 [2020-12-22 13:09:28,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:09:28,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6000 states. [2020-12-22 13:09:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6000 to 6000. [2020-12-22 13:09:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6000 states. [2020-12-22 13:09:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 8545 transitions. [2020-12-22 13:09:28,534 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 8545 transitions. Word has length 37 [2020-12-22 13:09:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:28,534 INFO L481 AbstractCegarLoop]: Abstraction has 6000 states and 8545 transitions. [2020-12-22 13:09:28,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 8545 transitions. [2020-12-22 13:09:28,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 13:09:28,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:28,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:28,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:09:28,539 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:28,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:28,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1031632269, now seen corresponding path program 1 times [2020-12-22 13:09:28,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:28,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226513409] [2020-12-22 13:09:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-12-22 13:09:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:09:28,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226513409] [2020-12-22 13:09:28,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:28,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:09:28,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832501394] [2020-12-22 13:09:28,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:09:28,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:28,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:09:28,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:09:28,853 INFO L87 Difference]: Start difference. First operand 6000 states and 8545 transitions. Second operand 5 states. [2020-12-22 13:09:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:44,126 INFO L93 Difference]: Finished difference Result 12579 states and 18199 transitions. [2020-12-22 13:09:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:09:44,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 13:09:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:44,162 INFO L225 Difference]: With dead ends: 12579 [2020-12-22 13:09:44,162 INFO L226 Difference]: Without dead ends: 6610 [2020-12-22 13:09:44,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:09:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2020-12-22 13:09:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 6562. [2020-12-22 13:09:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6562 states. [2020-12-22 13:09:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6562 states to 6562 states and 9320 transitions. [2020-12-22 13:09:44,539 INFO L78 Accepts]: Start accepts. Automaton has 6562 states and 9320 transitions. Word has length 83 [2020-12-22 13:09:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:44,541 INFO L481 AbstractCegarLoop]: Abstraction has 6562 states and 9320 transitions. [2020-12-22 13:09:44,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:09:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 6562 states and 9320 transitions. [2020-12-22 13:09:44,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 13:09:44,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:44,545 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:09:44,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:09:44,546 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:44,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:44,547 INFO L82 PathProgramCache]: Analyzing trace with hash -679954352, now seen corresponding path program 1 times [2020-12-22 13:09:44,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:44,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322907626] [2020-12-22 13:09:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:44,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-12-22 13:09:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:09:45,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322907626] [2020-12-22 13:09:45,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:45,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:09:45,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398799068] [2020-12-22 13:09:45,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:09:45,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:45,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:09:45,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:09:45,100 INFO L87 Difference]: Start difference. First operand 6562 states and 9320 transitions. Second operand 5 states. [2020-12-22 13:10:15,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:10:15,115 INFO L93 Difference]: Finished difference Result 18845 states and 27497 transitions. [2020-12-22 13:10:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:10:15,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 13:10:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:10:15,152 INFO L225 Difference]: With dead ends: 18845 [2020-12-22 13:10:15,153 INFO L226 Difference]: Without dead ends: 6322 [2020-12-22 13:10:15,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:10:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2020-12-22 13:10:15,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 6282. [2020-12-22 13:10:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6282 states. [2020-12-22 13:10:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 8576 transitions. [2020-12-22 13:10:15,534 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 8576 transitions. Word has length 92 [2020-12-22 13:10:15,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:10:15,535 INFO L481 AbstractCegarLoop]: Abstraction has 6282 states and 8576 transitions. [2020-12-22 13:10:15,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:10:15,535 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 8576 transitions. [2020-12-22 13:10:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 13:10:15,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:10:15,538 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:10:15,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:10:15,539 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:10:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:10:15,539 INFO L82 PathProgramCache]: Analyzing trace with hash -647940848, now seen corresponding path program 1 times [2020-12-22 13:10:15,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:10:15,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912041171] [2020-12-22 13:10:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:10:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-12-22 13:10:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:10:15,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912041171] [2020-12-22 13:10:15,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:10:15,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:10:15,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064306795] [2020-12-22 13:10:15,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:10:15,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:10:15,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:10:15,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:10:15,838 INFO L87 Difference]: Start difference. First operand 6282 states and 8576 transitions. Second operand 5 states. [2020-12-22 13:10:34,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:10:34,699 INFO L93 Difference]: Finished difference Result 14537 states and 20197 transitions. [2020-12-22 13:10:34,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:10:34,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 13:10:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:10:34,742 INFO L225 Difference]: With dead ends: 14537 [2020-12-22 13:10:34,742 INFO L226 Difference]: Without dead ends: 8286 [2020-12-22 13:10:34,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:10:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8286 states. [2020-12-22 13:10:35,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8286 to 6282. [2020-12-22 13:10:35,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6282 states. [2020-12-22 13:10:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 8568 transitions. [2020-12-22 13:10:35,102 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 8568 transitions. Word has length 92 [2020-12-22 13:10:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:10:35,102 INFO L481 AbstractCegarLoop]: Abstraction has 6282 states and 8568 transitions. [2020-12-22 13:10:35,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:10:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 8568 transitions. [2020-12-22 13:10:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 13:10:35,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:10:35,112 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:10:35,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:10:35,112 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:10:35,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:10:35,113 INFO L82 PathProgramCache]: Analyzing trace with hash 84660165, now seen corresponding path program 1 times [2020-12-22 13:10:35,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:10:35,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857460098] [2020-12-22 13:10:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:10:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:35,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-12-22 13:10:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:10:35,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857460098] [2020-12-22 13:10:35,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:10:35,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:10:35,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766777448] [2020-12-22 13:10:35,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:10:35,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:10:35,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:10:35,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:10:35,591 INFO L87 Difference]: Start difference. First operand 6282 states and 8568 transitions. Second operand 5 states. [2020-12-22 13:11:05,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:05,792 INFO L93 Difference]: Finished difference Result 18337 states and 25793 transitions. [2020-12-22 13:11:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:11:05,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 13:11:05,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:05,827 INFO L225 Difference]: With dead ends: 18337 [2020-12-22 13:11:05,828 INFO L226 Difference]: Without dead ends: 6650 [2020-12-22 13:11:05,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:11:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6650 states. [2020-12-22 13:11:06,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6650 to 6390. [2020-12-22 13:11:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6390 states. [2020-12-22 13:11:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6390 states to 6390 states and 8752 transitions. [2020-12-22 13:11:06,223 INFO L78 Accepts]: Start accepts. Automaton has 6390 states and 8752 transitions. Word has length 92 [2020-12-22 13:11:06,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:06,223 INFO L481 AbstractCegarLoop]: Abstraction has 6390 states and 8752 transitions. [2020-12-22 13:11:06,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:11:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6390 states and 8752 transitions. [2020-12-22 13:11:06,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 13:11:06,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:06,231 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:11:06,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:11:06,231 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:06,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:06,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1393243720, now seen corresponding path program 1 times [2020-12-22 13:11:06,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:06,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516585390] [2020-12-22 13:11:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-12-22 13:11:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:11:06,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516585390] [2020-12-22 13:11:06,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:06,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:11:06,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391999331] [2020-12-22 13:11:06,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:11:06,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:06,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:11:06,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:11:06,668 INFO L87 Difference]: Start difference. First operand 6390 states and 8752 transitions. Second operand 4 states. [2020-12-22 13:11:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:22,984 INFO L93 Difference]: Finished difference Result 12973 states and 18159 transitions. [2020-12-22 13:11:22,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:11:22,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-12-22 13:11:22,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:23,020 INFO L225 Difference]: With dead ends: 12973 [2020-12-22 13:11:23,020 INFO L226 Difference]: Without dead ends: 6614 [2020-12-22 13:11:23,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:11:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2020-12-22 13:11:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6394. [2020-12-22 13:11:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6394 states. [2020-12-22 13:11:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6394 states to 6394 states and 8756 transitions. [2020-12-22 13:11:23,405 INFO L78 Accepts]: Start accepts. Automaton has 6394 states and 8756 transitions. Word has length 120 [2020-12-22 13:11:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:23,405 INFO L481 AbstractCegarLoop]: Abstraction has 6394 states and 8756 transitions. [2020-12-22 13:11:23,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:11:23,406 INFO L276 IsEmpty]: Start isEmpty. Operand 6394 states and 8756 transitions. [2020-12-22 13:11:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 13:11:23,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:23,414 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:11:23,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:11:23,415 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:23,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1421641062, now seen corresponding path program 1 times [2020-12-22 13:11:23,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:23,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314135612] [2020-12-22 13:11:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-12-22 13:11:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:11:23,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314135612] [2020-12-22 13:11:23,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475430103] [2020-12-22 13:11:23,837 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 13:11:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:25,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:11:25,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:11:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:11:25,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:11:25,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 13:11:25,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325640101] [2020-12-22 13:11:25,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:25,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:25,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:25,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:11:25,739 INFO L87 Difference]: Start difference. First operand 6394 states and 8756 transitions. Second operand 3 states. [2020-12-22 13:11:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:26,653 INFO L93 Difference]: Finished difference Result 12773 states and 17835 transitions. [2020-12-22 13:11:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:26,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-22 13:11:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:26,692 INFO L225 Difference]: With dead ends: 12773 [2020-12-22 13:11:26,692 INFO L226 Difference]: Without dead ends: 6410 [2020-12-22 13:11:26,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:11:26,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2020-12-22 13:11:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 6398. [2020-12-22 13:11:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6398 states. [2020-12-22 13:11:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6398 states to 6398 states and 8760 transitions. [2020-12-22 13:11:27,184 INFO L78 Accepts]: Start accepts. Automaton has 6398 states and 8760 transitions. Word has length 121 [2020-12-22 13:11:27,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:27,185 INFO L481 AbstractCegarLoop]: Abstraction has 6398 states and 8760 transitions. [2020-12-22 13:11:27,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:27,185 INFO L276 IsEmpty]: Start isEmpty. Operand 6398 states and 8760 transitions. [2020-12-22 13:11:27,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 13:11:27,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:27,194 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:11:27,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 13:11:27,409 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:27,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:27,410 INFO L82 PathProgramCache]: Analyzing trace with hash -543437451, now seen corresponding path program 1 times [2020-12-22 13:11:27,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:27,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745965488] [2020-12-22 13:11:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:27,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-12-22 13:11:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:11:27,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745965488] [2020-12-22 13:11:27,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932723986] [2020-12-22 13:11:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-22 13:11:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:29,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:11:29,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:11:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:11:29,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:11:29,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 13:11:29,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491637323] [2020-12-22 13:11:29,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:29,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:29,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:29,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:11:29,555 INFO L87 Difference]: Start difference. First operand 6398 states and 8760 transitions. Second operand 3 states. [2020-12-22 13:11:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:29,867 INFO L93 Difference]: Finished difference Result 12773 states and 17831 transitions. [2020-12-22 13:11:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:29,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-12-22 13:11:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:29,898 INFO L225 Difference]: With dead ends: 12773 [2020-12-22 13:11:29,898 INFO L226 Difference]: Without dead ends: 6406 [2020-12-22 13:11:29,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:11:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2020-12-22 13:11:30,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 6402. [2020-12-22 13:11:30,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6402 states. [2020-12-22 13:11:30,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6402 states to 6402 states and 8764 transitions. [2020-12-22 13:11:30,265 INFO L78 Accepts]: Start accepts. Automaton has 6402 states and 8764 transitions. Word has length 124 [2020-12-22 13:11:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:30,266 INFO L481 AbstractCegarLoop]: Abstraction has 6402 states and 8764 transitions. [2020-12-22 13:11:30,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 6402 states and 8764 transitions. [2020-12-22 13:11:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-22 13:11:30,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:30,276 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:11:30,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 13:11:30,486 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:30,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1858105041, now seen corresponding path program 1 times [2020-12-22 13:11:30,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:30,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353048151] [2020-12-22 13:11:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:30,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-12-22 13:11:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:11:30,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353048151] [2020-12-22 13:11:30,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930734449] [2020-12-22 13:11:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:11:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:32,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:11:32,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:11:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:11:32,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:11:32,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2020-12-22 13:11:32,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610726007] [2020-12-22 13:11:32,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:11:32,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:32,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:11:32,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:11:32,795 INFO L87 Difference]: Start difference. First operand 6402 states and 8764 transitions. Second operand 7 states. [2020-12-22 13:11:52,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:52,578 INFO L93 Difference]: Finished difference Result 16421 states and 22975 transitions. [2020-12-22 13:11:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:11:52,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-12-22 13:11:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:52,656 INFO L225 Difference]: With dead ends: 16421 [2020-12-22 13:11:52,657 INFO L226 Difference]: Without dead ends: 10050 [2020-12-22 13:11:52,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:11:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10050 states. [2020-12-22 13:11:53,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10050 to 6462. [2020-12-22 13:11:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6462 states. [2020-12-22 13:11:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6462 states to 6462 states and 8840 transitions. [2020-12-22 13:11:53,126 INFO L78 Accepts]: Start accepts. Automaton has 6462 states and 8840 transitions. Word has length 126 [2020-12-22 13:11:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:53,127 INFO L481 AbstractCegarLoop]: Abstraction has 6462 states and 8840 transitions. [2020-12-22 13:11:53,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:11:53,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6462 states and 8840 transitions. [2020-12-22 13:11:53,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 13:11:53,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:53,137 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:11:53,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 13:11:53,350 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:53,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:53,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1013719820, now seen corresponding path program 1 times [2020-12-22 13:11:53,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:53,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875997138] [2020-12-22 13:11:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:53,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-12-22 13:11:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 13:11:53,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875997138] [2020-12-22 13:11:53,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139776471] [2020-12-22 13:11:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:11:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:55,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:11:55,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:11:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:11:55,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:11:55,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 13:11:55,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930130339] [2020-12-22 13:11:55,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:11:55,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:55,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:11:55,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:11:55,875 INFO L87 Difference]: Start difference. First operand 6462 states and 8840 transitions. Second operand 8 states. [2020-12-22 13:12:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:12,265 INFO L93 Difference]: Finished difference Result 13129 states and 18351 transitions. [2020-12-22 13:12:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:12:12,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-12-22 13:12:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:12,307 INFO L225 Difference]: With dead ends: 13129 [2020-12-22 13:12:12,307 INFO L226 Difference]: Without dead ends: 6698 [2020-12-22 13:12:12,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:12:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6698 states. [2020-12-22 13:12:12,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6698 to 6474. [2020-12-22 13:12:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6474 states. [2020-12-22 13:12:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 8852 transitions. [2020-12-22 13:12:12,819 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 8852 transitions. Word has length 137 [2020-12-22 13:12:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:12,819 INFO L481 AbstractCegarLoop]: Abstraction has 6474 states and 8852 transitions. [2020-12-22 13:12:12,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:12:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 8852 transitions. [2020-12-22 13:12:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 13:12:12,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:12,831 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:12:13,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:12:13,046 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:13,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2090465195, now seen corresponding path program 1 times [2020-12-22 13:12:13,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:13,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405454229] [2020-12-22 13:12:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:13,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-12-22 13:12:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:12:13,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405454229] [2020-12-22 13:12:13,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:13,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:12:13,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068050993] [2020-12-22 13:12:13,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:12:13,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:13,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:12:13,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:12:13,493 INFO L87 Difference]: Start difference. First operand 6474 states and 8852 transitions. Second operand 4 states. [2020-12-22 13:12:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:30,304 INFO L93 Difference]: Finished difference Result 13169 states and 18395 transitions. [2020-12-22 13:12:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:12:30,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-12-22 13:12:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:30,421 INFO L225 Difference]: With dead ends: 13169 [2020-12-22 13:12:30,421 INFO L226 Difference]: Without dead ends: 6726 [2020-12-22 13:12:30,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:12:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2020-12-22 13:12:30,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 6482. [2020-12-22 13:12:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6482 states. [2020-12-22 13:12:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6482 states to 6482 states and 8860 transitions. [2020-12-22 13:12:30,820 INFO L78 Accepts]: Start accepts. Automaton has 6482 states and 8860 transitions. Word has length 140 [2020-12-22 13:12:30,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:30,821 INFO L481 AbstractCegarLoop]: Abstraction has 6482 states and 8860 transitions. [2020-12-22 13:12:30,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:12:30,821 INFO L276 IsEmpty]: Start isEmpty. Operand 6482 states and 8860 transitions. [2020-12-22 13:12:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 13:12:30,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:30,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:12:30,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 13:12:30,830 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:30,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:30,831 INFO L82 PathProgramCache]: Analyzing trace with hash 490853434, now seen corresponding path program 2 times [2020-12-22 13:12:30,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:30,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072069253] [2020-12-22 13:12:30,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:31,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-12-22 13:12:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 13:12:31,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072069253] [2020-12-22 13:12:31,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251943883] [2020-12-22 13:12:31,254 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true