/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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 12:26:38,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 12:26:38,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 12:26:38,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 12:26:38,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 12:26:38,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 12:26:38,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 12:26:38,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 12:26:38,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 12:26:38,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 12:26:38,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 12:26:38,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 12:26:38,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 12:26:38,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 12:26:38,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 12:26:38,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 12:26:38,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 12:26:38,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 12:26:38,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 12:26:38,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 12:26:38,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 12:26:38,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 12:26:38,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 12:26:38,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 12:26:38,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 12:26:38,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 12:26:38,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 12:26:38,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 12:26:38,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 12:26:38,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 12:26:38,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 12:26:38,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 12:26:38,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 12:26:38,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 12:26:38,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 12:26:38,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 12:26:38,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 12:26:38,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 12:26:38,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 12:26:38,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 12:26:38,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 12:26:38,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 12:26:38,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 12:26:38,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 12:26:38,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 12:26:38,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 12:26:38,480 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 12:26:38,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 12:26:38,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 12:26:38,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 12:26:38,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 12:26:38,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 12:26:38,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 12:26:38,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 12:26:38,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 12:26:38,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 12:26:38,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 12:26:38,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 12:26:38,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 12:26:38,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 12:26:38,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 12:26:38,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 12:26:38,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 12:26:38,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 12:26:38,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 12:26:38,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 12:26:38,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 12:26:38,486 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 12:26:38,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 12:26:38,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 12:26:38,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 12:26:38,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 12:26:38,923 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 12:26:38,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2020-12-22 12:26:39,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b38cbf0/90aceff7c0e845d2ac26385426e6b143/FLAG7ac657e05 [2020-12-22 12:26:39,938 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 12:26:39,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2020-12-22 12:26:39,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b38cbf0/90aceff7c0e845d2ac26385426e6b143/FLAG7ac657e05 [2020-12-22 12:26:40,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b38cbf0/90aceff7c0e845d2ac26385426e6b143 [2020-12-22 12:26:40,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 12:26:40,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 12:26:40,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 12:26:40,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 12:26:40,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 12:26:40,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:26:40" (1/1) ... [2020-12-22 12:26:40,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c797a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:40, skipping insertion in model container [2020-12-22 12:26:40,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:26:40" (1/1) ... [2020-12-22 12:26:40,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 12:26:40,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 12:26:41,986 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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2020-12-22 12:26:42,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:26:42,059 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 12:26:42,403 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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2020-12-22 12:26:42,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:26:42,802 INFO L208 MainTranslator]: Completed translation [2020-12-22 12:26:42,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42 WrapperNode [2020-12-22 12:26:42,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 12:26:42,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 12:26:42,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 12:26:42,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 12:26:42,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (1/1) ... [2020-12-22 12:26:42,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (1/1) ... [2020-12-22 12:26:44,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 12:26:44,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 12:26:44,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 12:26:44,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 12:26:44,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (1/1) ... [2020-12-22 12:26:44,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (1/1) ... [2020-12-22 12:26:45,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (1/1) ... [2020-12-22 12:26:45,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (1/1) ... [2020-12-22 12:26:46,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (1/1) ... [2020-12-22 12:26:47,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (1/1) ... [2020-12-22 12:26:47,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (1/1) ... [2020-12-22 12:26:47,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 12:26:47,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 12:26:47,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 12:26:47,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 12:26:47,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (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 12:26:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 12:26:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 12:26:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 12:26:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 12:26:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2020-12-22 12:26:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2020-12-22 12:26:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2020-12-22 12:26:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2020-12-22 12:26:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 12:26:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2020-12-22 12:26:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2020-12-22 12:26:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 12:26:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-12-22 12:26:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2020-12-22 12:26:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 12:26:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 12:26:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 12:26:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2020-12-22 12:26:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2020-12-22 12:26:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 12:26:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 12:26:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 12:26:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2020-12-22 12:26:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2020-12-22 12:26:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 12:26:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 12:26:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 12:26:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 12:26:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 12:26:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 12:27:54,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 12:27:54,092 INFO L299 CfgBuilder]: Removed 13433 assume(true) statements. [2020-12-22 12:27:54,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:27:54 BoogieIcfgContainer [2020-12-22 12:27:54,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 12:27:54,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 12:27:54,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 12:27:54,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 12:27:54,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:26:40" (1/3) ... [2020-12-22 12:27:54,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdc1aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:27:54, skipping insertion in model container [2020-12-22 12:27:54,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:42" (2/3) ... [2020-12-22 12:27:54,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdc1aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:27:54, skipping insertion in model container [2020-12-22 12:27:54,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:27:54" (3/3) ... [2020-12-22 12:27:54,113 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2020-12-22 12:27:54,120 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 12:27:54,129 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-12-22 12:27:54,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-12-22 12:27:54,228 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 12:27:54,228 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 12:27:54,228 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 12:27:54,228 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 12:27:54,228 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 12:27:54,229 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 12:27:54,229 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 12:27:54,229 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 12:27:54,372 INFO L276 IsEmpty]: Start isEmpty. Operand 11338 states. [2020-12-22 12:27:54,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 12:27:54,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:27:54,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:27:54,378 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:27:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:27:54,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1003863478, now seen corresponding path program 1 times [2020-12-22 12:27:54,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:27:54,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107723860] [2020-12-22 12:27:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:27:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:27:55,214 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 12:27:55,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107723860] [2020-12-22 12:27:55,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:27:55,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 12:27:55,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129206803] [2020-12-22 12:27:55,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:27:55,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:27:55,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:27:55,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:27:55,241 INFO L87 Difference]: Start difference. First operand 11338 states. Second operand 3 states. [2020-12-22 12:27:56,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:27:56,330 INFO L93 Difference]: Finished difference Result 29868 states and 41662 transitions. [2020-12-22 12:27:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:27:56,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-22 12:27:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:27:56,466 INFO L225 Difference]: With dead ends: 29868 [2020-12-22 12:27:56,466 INFO L226 Difference]: Without dead ends: 18529 [2020-12-22 12:27:56,531 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 12:27:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18529 states. [2020-12-22 12:27:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18529 to 18523. [2020-12-22 12:27:57,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18523 states. [2020-12-22 12:27:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 25340 transitions. [2020-12-22 12:27:57,366 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 25340 transitions. Word has length 8 [2020-12-22 12:27:57,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:27:57,367 INFO L481 AbstractCegarLoop]: Abstraction has 18523 states and 25340 transitions. [2020-12-22 12:27:57,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:27:57,368 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 25340 transitions. [2020-12-22 12:27:57,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 12:27:57,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:27:57,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:27:57,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 12:27:57,370 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:27:57,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:27:57,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1055016019, now seen corresponding path program 1 times [2020-12-22 12:27:57,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:27:57,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616767953] [2020-12-22 12:27:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:27:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:27:57,649 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 12:27:57,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616767953] [2020-12-22 12:27:57,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:27:57,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 12:27:57,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038137911] [2020-12-22 12:27:57,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:27:57,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:27:57,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:27:57,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:27:57,654 INFO L87 Difference]: Start difference. First operand 18523 states and 25340 transitions. Second operand 3 states. [2020-12-22 12:27:58,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:27:58,807 INFO L93 Difference]: Finished difference Result 46242 states and 63278 transitions. [2020-12-22 12:27:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:27:58,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-22 12:27:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:27:58,996 INFO L225 Difference]: With dead ends: 46242 [2020-12-22 12:27:58,996 INFO L226 Difference]: Without dead ends: 37009 [2020-12-22 12:27:59,024 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 12:27:59,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37009 states. [2020-12-22 12:27:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37009 to 27787. [2020-12-22 12:27:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27787 states. [2020-12-22 12:28:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27787 states to 27787 states and 38020 transitions. [2020-12-22 12:28:00,015 INFO L78 Accepts]: Start accepts. Automaton has 27787 states and 38020 transitions. Word has length 9 [2020-12-22 12:28:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:00,015 INFO L481 AbstractCegarLoop]: Abstraction has 27787 states and 38020 transitions. [2020-12-22 12:28:00,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:28:00,017 INFO L276 IsEmpty]: Start isEmpty. Operand 27787 states and 38020 transitions. [2020-12-22 12:28:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 12:28:00,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:00,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:28:00,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 12:28:00,021 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:00,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:00,026 INFO L82 PathProgramCache]: Analyzing trace with hash 746265207, now seen corresponding path program 1 times [2020-12-22 12:28:00,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:00,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103201624] [2020-12-22 12:28:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:00,439 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 12:28:00,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103201624] [2020-12-22 12:28:00,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:00,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 12:28:00,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905582986] [2020-12-22 12:28:00,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:28:00,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:00,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:28:00,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:28:00,441 INFO L87 Difference]: Start difference. First operand 27787 states and 38020 transitions. Second operand 3 states. [2020-12-22 12:28:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:28:01,724 INFO L93 Difference]: Finished difference Result 64742 states and 88605 transitions. [2020-12-22 12:28:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:28:01,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-22 12:28:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:28:01,921 INFO L225 Difference]: With dead ends: 64742 [2020-12-22 12:28:01,921 INFO L226 Difference]: Without dead ends: 55505 [2020-12-22 12:28:01,957 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 12:28:02,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55505 states. [2020-12-22 12:28:03,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55505 to 27844. [2020-12-22 12:28:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27844 states. [2020-12-22 12:28:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38089 transitions. [2020-12-22 12:28:03,404 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38089 transitions. Word has length 18 [2020-12-22 12:28:03,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:03,405 INFO L481 AbstractCegarLoop]: Abstraction has 27844 states and 38089 transitions. [2020-12-22 12:28:03,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:28:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38089 transitions. [2020-12-22 12:28:03,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 12:28:03,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:03,407 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] [2020-12-22 12:28:03,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 12:28:03,407 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:03,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:03,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2026520274, now seen corresponding path program 1 times [2020-12-22 12:28:03,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:03,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597336932] [2020-12-22 12:28:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:03,928 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 12:28:03,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597336932] [2020-12-22 12:28:03,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:03,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 12:28:03,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856750920] [2020-12-22 12:28:03,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 12:28:03,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:03,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 12:28:03,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 12:28:03,932 INFO L87 Difference]: Start difference. First operand 27844 states and 38089 transitions. Second operand 8 states. [2020-12-22 12:28:08,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:28:08,407 INFO L93 Difference]: Finished difference Result 92276 states and 125749 transitions. [2020-12-22 12:28:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 12:28:08,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-22 12:28:08,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:28:08,647 INFO L225 Difference]: With dead ends: 92276 [2020-12-22 12:28:08,647 INFO L226 Difference]: Without dead ends: 64534 [2020-12-22 12:28:08,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-12-22 12:28:08,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64534 states. [2020-12-22 12:28:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64534 to 27854. [2020-12-22 12:28:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27854 states. [2020-12-22 12:28:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27854 states to 27854 states and 38099 transitions. [2020-12-22 12:28:10,579 INFO L78 Accepts]: Start accepts. Automaton has 27854 states and 38099 transitions. Word has length 20 [2020-12-22 12:28:10,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:10,580 INFO L481 AbstractCegarLoop]: Abstraction has 27854 states and 38099 transitions. [2020-12-22 12:28:10,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 12:28:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 27854 states and 38099 transitions. [2020-12-22 12:28:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 12:28:10,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:10,582 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] [2020-12-22 12:28:10,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 12:28:10,582 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:10,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:10,583 INFO L82 PathProgramCache]: Analyzing trace with hash -672145171, now seen corresponding path program 1 times [2020-12-22 12:28:10,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:10,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86047328] [2020-12-22 12:28:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:11,226 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 12:28:11,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86047328] [2020-12-22 12:28:11,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:11,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 12:28:11,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938597039] [2020-12-22 12:28:11,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 12:28:11,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:11,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 12:28:11,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 12:28:11,230 INFO L87 Difference]: Start difference. First operand 27854 states and 38099 transitions. Second operand 10 states. [2020-12-22 12:28:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:28:17,865 INFO L93 Difference]: Finished difference Result 74742 states and 101693 transitions. [2020-12-22 12:28:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 12:28:17,867 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-12-22 12:28:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:28:18,048 INFO L225 Difference]: With dead ends: 74742 [2020-12-22 12:28:18,048 INFO L226 Difference]: Without dead ends: 65525 [2020-12-22 12:28:18,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=356, Invalid=976, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 12:28:18,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65525 states. [2020-12-22 12:28:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65525 to 27844. [2020-12-22 12:28:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27844 states. [2020-12-22 12:28:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38088 transitions. [2020-12-22 12:28:19,845 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38088 transitions. Word has length 23 [2020-12-22 12:28:19,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:19,854 INFO L481 AbstractCegarLoop]: Abstraction has 27844 states and 38088 transitions. [2020-12-22 12:28:19,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 12:28:19,854 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38088 transitions. [2020-12-22 12:28:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 12:28:19,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:19,857 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 12:28:19,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 12:28:19,858 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:19,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:19,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1084968097, now seen corresponding path program 1 times [2020-12-22 12:28:19,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:19,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133782311] [2020-12-22 12:28:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:21,398 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 12:28:21,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133782311] [2020-12-22 12:28:21,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:21,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 12:28:21,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434855769] [2020-12-22 12:28:21,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 12:28:21,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:21,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 12:28:21,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 12:28:21,400 INFO L87 Difference]: Start difference. First operand 27844 states and 38088 transitions. Second operand 7 states. [2020-12-22 12:28:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:28:25,104 INFO L93 Difference]: Finished difference Result 64036 states and 87550 transitions. [2020-12-22 12:28:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 12:28:25,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-12-22 12:28:25,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:28:25,307 INFO L225 Difference]: With dead ends: 64036 [2020-12-22 12:28:25,308 INFO L226 Difference]: Without dead ends: 36301 [2020-12-22 12:28:25,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 12:28:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36301 states. [2020-12-22 12:28:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36301 to 27775. [2020-12-22 12:28:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27775 states. [2020-12-22 12:28:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27775 states to 27775 states and 38005 transitions. [2020-12-22 12:28:26,930 INFO L78 Accepts]: Start accepts. Automaton has 27775 states and 38005 transitions. Word has length 25 [2020-12-22 12:28:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:26,930 INFO L481 AbstractCegarLoop]: Abstraction has 27775 states and 38005 transitions. [2020-12-22 12:28:26,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 12:28:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 27775 states and 38005 transitions. [2020-12-22 12:28:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 12:28:26,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:26,932 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 12:28:26,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 12:28:26,932 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:26,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:26,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1106106172, now seen corresponding path program 1 times [2020-12-22 12:28:26,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:26,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101525254] [2020-12-22 12:28:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:27,168 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 12:28:27,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101525254] [2020-12-22 12:28:27,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:27,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:28:27,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325323481] [2020-12-22 12:28:27,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:28:27,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:27,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:28:27,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:28:27,172 INFO L87 Difference]: Start difference. First operand 27775 states and 38005 transitions. Second operand 3 states. [2020-12-22 12:28:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:28:31,022 INFO L93 Difference]: Finished difference Result 36988 states and 50619 transitions. [2020-12-22 12:28:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:28:31,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 12:28:31,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:28:31,092 INFO L225 Difference]: With dead ends: 36988 [2020-12-22 12:28:31,092 INFO L226 Difference]: Without dead ends: 36970 [2020-12-22 12:28:31,104 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 12:28:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36970 states. [2020-12-22 12:28:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36970 to 18536. [2020-12-22 12:28:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18536 states. [2020-12-22 12:28:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18536 states to 18536 states and 25354 transitions. [2020-12-22 12:28:32,424 INFO L78 Accepts]: Start accepts. Automaton has 18536 states and 25354 transitions. Word has length 26 [2020-12-22 12:28:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:32,425 INFO L481 AbstractCegarLoop]: Abstraction has 18536 states and 25354 transitions. [2020-12-22 12:28:32,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:28:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 18536 states and 25354 transitions. [2020-12-22 12:28:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 12:28:32,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:32,426 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 12:28:32,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 12:28:32,427 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:32,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:32,427 INFO L82 PathProgramCache]: Analyzing trace with hash -30592161, now seen corresponding path program 1 times [2020-12-22 12:28:32,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:32,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182398799] [2020-12-22 12:28:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:33,614 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 12:28:33,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182398799] [2020-12-22 12:28:33,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:33,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 12:28:33,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623267462] [2020-12-22 12:28:33,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 12:28:33,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:33,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 12:28:33,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 12:28:33,617 INFO L87 Difference]: Start difference. First operand 18536 states and 25354 transitions. Second operand 6 states. [2020-12-22 12:28:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:28:36,760 INFO L93 Difference]: Finished difference Result 39176 states and 53505 transitions. [2020-12-22 12:28:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 12:28:36,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-12-22 12:28:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:28:36,811 INFO L225 Difference]: With dead ends: 39176 [2020-12-22 12:28:36,811 INFO L226 Difference]: Without dead ends: 29956 [2020-12-22 12:28:36,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 12:28:36,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29956 states. [2020-12-22 12:28:38,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29956 to 18526. [2020-12-22 12:28:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18526 states. [2020-12-22 12:28:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18526 states to 18526 states and 25343 transitions. [2020-12-22 12:28:38,044 INFO L78 Accepts]: Start accepts. Automaton has 18526 states and 25343 transitions. Word has length 35 [2020-12-22 12:28:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:38,044 INFO L481 AbstractCegarLoop]: Abstraction has 18526 states and 25343 transitions. [2020-12-22 12:28:38,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 12:28:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 18526 states and 25343 transitions. [2020-12-22 12:28:38,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 12:28:38,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:38,046 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 12:28:38,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 12:28:38,046 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:38,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:38,047 INFO L82 PathProgramCache]: Analyzing trace with hash -101650481, now seen corresponding path program 1 times [2020-12-22 12:28:38,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:38,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752141541] [2020-12-22 12:28:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:39,318 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 12:28:39,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752141541] [2020-12-22 12:28:39,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:39,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 12:28:39,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312112816] [2020-12-22 12:28:39,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 12:28:39,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:39,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 12:28:39,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 12:28:39,321 INFO L87 Difference]: Start difference. First operand 18526 states and 25343 transitions. Second operand 9 states. [2020-12-22 12:28:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:28:41,884 INFO L93 Difference]: Finished difference Result 39820 states and 54469 transitions. [2020-12-22 12:28:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 12:28:41,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-12-22 12:28:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:28:41,920 INFO L225 Difference]: With dead ends: 39820 [2020-12-22 12:28:41,921 INFO L226 Difference]: Without dead ends: 21358 [2020-12-22 12:28:41,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-22 12:28:41,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21358 states. [2020-12-22 12:28:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21358 to 18504. [2020-12-22 12:28:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18504 states. [2020-12-22 12:28:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18504 states to 18504 states and 25316 transitions. [2020-12-22 12:28:43,272 INFO L78 Accepts]: Start accepts. Automaton has 18504 states and 25316 transitions. Word has length 36 [2020-12-22 12:28:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:43,273 INFO L481 AbstractCegarLoop]: Abstraction has 18504 states and 25316 transitions. [2020-12-22 12:28:43,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 12:28:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 18504 states and 25316 transitions. [2020-12-22 12:28:43,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 12:28:43,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:43,274 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 12:28:43,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 12:28:43,274 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:43,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1336139737, now seen corresponding path program 1 times [2020-12-22 12:28:43,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:43,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696576648] [2020-12-22 12:28:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:44,487 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 12:28:44,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696576648] [2020-12-22 12:28:44,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:44,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 12:28:44,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362417518] [2020-12-22 12:28:44,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 12:28:44,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 12:28:44,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-12-22 12:28:44,489 INFO L87 Difference]: Start difference. First operand 18504 states and 25316 transitions. Second operand 11 states. [2020-12-22 12:28:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:28:46,453 INFO L93 Difference]: Finished difference Result 27716 states and 37930 transitions. [2020-12-22 12:28:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 12:28:46,454 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-12-22 12:28:46,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:28:46,485 INFO L225 Difference]: With dead ends: 27716 [2020-12-22 12:28:46,486 INFO L226 Difference]: Without dead ends: 18496 [2020-12-22 12:28:46,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-12-22 12:28:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18496 states. [2020-12-22 12:28:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18496 to 18496. [2020-12-22 12:28:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18496 states. [2020-12-22 12:28:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18496 states to 18496 states and 25307 transitions. [2020-12-22 12:28:47,851 INFO L78 Accepts]: Start accepts. Automaton has 18496 states and 25307 transitions. Word has length 36 [2020-12-22 12:28:47,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:47,851 INFO L481 AbstractCegarLoop]: Abstraction has 18496 states and 25307 transitions. [2020-12-22 12:28:47,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 12:28:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 18496 states and 25307 transitions. [2020-12-22 12:28:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 12:28:47,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:47,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:28:47,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 12:28:47,852 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:47,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:47,853 INFO L82 PathProgramCache]: Analyzing trace with hash 98810864, now seen corresponding path program 1 times [2020-12-22 12:28:47,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:47,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459116534] [2020-12-22 12:28:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:48,874 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 12:28:48,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459116534] [2020-12-22 12:28:48,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:48,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 12:28:48,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111416566] [2020-12-22 12:28:48,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 12:28:48,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:48,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 12:28:48,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 12:28:48,879 INFO L87 Difference]: Start difference. First operand 18496 states and 25307 transitions. Second operand 6 states. [2020-12-22 12:28:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:28:51,038 INFO L93 Difference]: Finished difference Result 30575 states and 41813 transitions. [2020-12-22 12:28:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 12:28:51,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-12-22 12:28:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:28:51,075 INFO L225 Difference]: With dead ends: 30575 [2020-12-22 12:28:51,075 INFO L226 Difference]: Without dead ends: 21350 [2020-12-22 12:28:51,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 12:28:51,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21350 states. [2020-12-22 12:28:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21350 to 18493. [2020-12-22 12:28:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18493 states. [2020-12-22 12:28:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18493 states to 18493 states and 25303 transitions. [2020-12-22 12:28:52,532 INFO L78 Accepts]: Start accepts. Automaton has 18493 states and 25303 transitions. Word has length 39 [2020-12-22 12:28:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:52,532 INFO L481 AbstractCegarLoop]: Abstraction has 18493 states and 25303 transitions. [2020-12-22 12:28:52,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 12:28:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 18493 states and 25303 transitions. [2020-12-22 12:28:52,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 12:28:52,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:52,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:28:52,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 12:28:52,533 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:52,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:52,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1192519123, now seen corresponding path program 1 times [2020-12-22 12:28:52,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:52,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721789632] [2020-12-22 12:28:52,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:52,722 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 12:28:52,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721789632] [2020-12-22 12:28:52,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:52,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 12:28:52,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836582588] [2020-12-22 12:28:52,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 12:28:52,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:52,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 12:28:52,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:28:52,725 INFO L87 Difference]: Start difference. First operand 18493 states and 25303 transitions. Second operand 5 states. [2020-12-22 12:28:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:28:55,324 INFO L93 Difference]: Finished difference Result 21345 states and 29182 transitions. [2020-12-22 12:28:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 12:28:55,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-12-22 12:28:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:28:55,359 INFO L225 Difference]: With dead ends: 21345 [2020-12-22 12:28:55,359 INFO L226 Difference]: Without dead ends: 21342 [2020-12-22 12:28:55,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 12:28:55,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21342 states. [2020-12-22 12:28:56,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21342 to 18487. [2020-12-22 12:28:56,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18487 states. [2020-12-22 12:28:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18487 states to 18487 states and 25296 transitions. [2020-12-22 12:28:56,701 INFO L78 Accepts]: Start accepts. Automaton has 18487 states and 25296 transitions. Word has length 40 [2020-12-22 12:28:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:28:56,701 INFO L481 AbstractCegarLoop]: Abstraction has 18487 states and 25296 transitions. [2020-12-22 12:28:56,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 12:28:56,701 INFO L276 IsEmpty]: Start isEmpty. Operand 18487 states and 25296 transitions. [2020-12-22 12:28:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 12:28:56,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:28:56,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:28:56,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 12:28:56,702 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:28:56,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:28:56,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1576144664, now seen corresponding path program 1 times [2020-12-22 12:28:56,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:28:56,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234611903] [2020-12-22 12:28:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:28:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:28:56,870 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 12:28:56,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234611903] [2020-12-22 12:28:56,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:28:56,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:28:56,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948628189] [2020-12-22 12:28:56,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:28:56,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:28:56,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:28:56,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:28:56,872 INFO L87 Difference]: Start difference. First operand 18487 states and 25296 transitions. Second operand 3 states. [2020-12-22 12:29:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:29:00,846 INFO L93 Difference]: Finished difference Result 27700 states and 37911 transitions. [2020-12-22 12:29:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:29:00,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 12:29:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:29:00,893 INFO L225 Difference]: With dead ends: 27700 [2020-12-22 12:29:00,893 INFO L226 Difference]: Without dead ends: 27689 [2020-12-22 12:29:00,902 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 12:29:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27689 states. [2020-12-22 12:29:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27689 to 9265. [2020-12-22 12:29:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9265 states. [2020-12-22 12:29:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9265 states to 9265 states and 12670 transitions. [2020-12-22 12:29:02,011 INFO L78 Accepts]: Start accepts. Automaton has 9265 states and 12670 transitions. Word has length 42 [2020-12-22 12:29:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:29:02,011 INFO L481 AbstractCegarLoop]: Abstraction has 9265 states and 12670 transitions. [2020-12-22 12:29:02,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:29:02,012 INFO L276 IsEmpty]: Start isEmpty. Operand 9265 states and 12670 transitions. [2020-12-22 12:29:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 12:29:02,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:29:02,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:29:02,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 12:29:02,013 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:29:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:29:02,013 INFO L82 PathProgramCache]: Analyzing trace with hash -937561105, now seen corresponding path program 1 times [2020-12-22 12:29:02,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:29:02,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566803765] [2020-12-22 12:29:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:29:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:29:02,978 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 12:29:02,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566803765] [2020-12-22 12:29:02,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:29:02,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 12:29:02,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704955212] [2020-12-22 12:29:02,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 12:29:02,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:29:02,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 12:29:02,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 12:29:02,981 INFO L87 Difference]: Start difference. First operand 9265 states and 12670 transitions. Second operand 9 states. [2020-12-22 12:29:05,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:29:05,391 INFO L93 Difference]: Finished difference Result 21333 states and 29167 transitions. [2020-12-22 12:29:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 12:29:05,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-12-22 12:29:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:29:05,412 INFO L225 Difference]: With dead ends: 21333 [2020-12-22 12:29:05,412 INFO L226 Difference]: Without dead ends: 12120 [2020-12-22 12:29:05,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 12:29:05,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12120 states. [2020-12-22 12:29:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12120 to 9265. [2020-12-22 12:29:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9265 states. [2020-12-22 12:29:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9265 states to 9265 states and 12669 transitions. [2020-12-22 12:29:06,501 INFO L78 Accepts]: Start accepts. Automaton has 9265 states and 12669 transitions. Word has length 45 [2020-12-22 12:29:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:29:06,501 INFO L481 AbstractCegarLoop]: Abstraction has 9265 states and 12669 transitions. [2020-12-22 12:29:06,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 12:29:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 9265 states and 12669 transitions. [2020-12-22 12:29:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 12:29:06,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:29:06,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:29:06,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 12:29:06,502 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:29:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:29:06,503 INFO L82 PathProgramCache]: Analyzing trace with hash 487558442, now seen corresponding path program 1 times [2020-12-22 12:29:06,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:29:06,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735407386] [2020-12-22 12:29:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:29:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:29:06,721 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 12:29:06,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735407386] [2020-12-22 12:29:06,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:29:06,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:29:06,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676290087] [2020-12-22 12:29:06,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:29:06,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:29:06,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:29:06,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:29:06,725 INFO L87 Difference]: Start difference. First operand 9265 states and 12669 transitions. Second operand 3 states. [2020-12-22 12:29:10,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:29:10,733 INFO L93 Difference]: Finished difference Result 18478 states and 25284 transitions. [2020-12-22 12:29:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:29:10,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-22 12:29:10,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:29:10,756 INFO L225 Difference]: With dead ends: 18478 [2020-12-22 12:29:10,756 INFO L226 Difference]: Without dead ends: 9259 [2020-12-22 12:29:10,770 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 12:29:10,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9259 states. [2020-12-22 12:29:11,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9259 to 9259. [2020-12-22 12:29:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9259 states. [2020-12-22 12:29:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9259 states to 9259 states and 12662 transitions. [2020-12-22 12:29:11,824 INFO L78 Accepts]: Start accepts. Automaton has 9259 states and 12662 transitions. Word has length 47 [2020-12-22 12:29:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:29:11,824 INFO L481 AbstractCegarLoop]: Abstraction has 9259 states and 12662 transitions. [2020-12-22 12:29:11,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:29:11,824 INFO L276 IsEmpty]: Start isEmpty. Operand 9259 states and 12662 transitions. [2020-12-22 12:29:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 12:29:11,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:29:11,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:29:11,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 12:29:11,825 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:29:11,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:29:11,825 INFO L82 PathProgramCache]: Analyzing trace with hash 147404565, now seen corresponding path program 1 times [2020-12-22 12:29:11,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:29:11,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369334512] [2020-12-22 12:29:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:29:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:29:12,073 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 12:29:12,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369334512] [2020-12-22 12:29:12,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:29:12,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 12:29:12,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606375793] [2020-12-22 12:29:12,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 12:29:12,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:29:12,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 12:29:12,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:29:12,087 INFO L87 Difference]: Start difference. First operand 9259 states and 12662 transitions. Second operand 5 states. [2020-12-22 12:29:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:29:12,222 INFO L93 Difference]: Finished difference Result 9259 states and 12662 transitions. [2020-12-22 12:29:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 12:29:12,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-12-22 12:29:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:29:12,223 INFO L225 Difference]: With dead ends: 9259 [2020-12-22 12:29:12,223 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 12:29:12,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 12:29:12,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 12:29:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 12:29:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 12:29:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 12:29:12,238 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-12-22 12:29:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:29:12,239 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 12:29:12,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 12:29:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 12:29:12,239 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 12:29:12,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 12:29:12,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 12:29:13,190 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:13,325 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:13,472 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:13,683 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:13,809 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:13,934 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:14,130 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 100 [2020-12-22 12:29:14,716 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:29:15,103 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:29:15,257 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:29:15,465 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:29:16,737 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 100 [2020-12-22 12:29:16,968 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:17,613 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 100 [2020-12-22 12:29:18,911 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:19,542 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 100 [2020-12-22 12:29:20,645 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 100 [2020-12-22 12:29:22,696 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 100 [2020-12-22 12:29:26,899 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:27,119 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:29:27,293 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:29:28,560 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:29:29,331 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:31,187 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 100 [2020-12-22 12:29:32,012 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:29:34,288 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:36,519 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:38,933 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:41,414 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:44,316 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:47,263 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 95 [2020-12-22 12:29:50,260 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:29:58,004 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:30:04,204 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108 [2020-12-22 12:30:04,967 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 108