/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:23:33,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:23:33,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:23:33,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:23:33,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:23:33,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:23:33,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:23:33,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:23:33,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:23:33,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:23:33,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:23:33,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:23:33,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:23:33,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:23:33,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:23:33,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:23:33,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:23:33,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:23:33,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:23:33,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:23:33,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:23:33,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:23:33,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:23:33,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:23:33,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:23:33,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:23:33,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:23:33,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:23:33,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:23:33,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:23:33,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:23:33,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:23:33,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:23:33,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:23:33,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:23:33,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:23:33,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:23:33,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:23:33,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:23:33,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:23:33,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:23:33,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:23:33,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:23:33,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:23:33,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:23:33,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:23:33,794 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:23:33,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:23:33,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:23:33,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:23:33,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:23:33,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:23:33,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:23:33,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:23:33,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:23:33,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:23:33,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:23:33,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:23:33,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:23:33,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:23:33,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:23:33,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:23:33,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:23:33,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:23:33,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:23:33,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:23:33,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:23:33,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:23:34,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:23:34,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:23:34,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:23:34,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:23:34,302 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:23:34,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2020-12-22 13:23:34,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2d0104b/2004fabc22854cfbabda3550a8ae77d6/FLAGa5bd28d53 [2020-12-22 13:23:35,650 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:23:35,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2020-12-22 13:23:35,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2d0104b/2004fabc22854cfbabda3550a8ae77d6/FLAGa5bd28d53 [2020-12-22 13:23:35,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2d0104b/2004fabc22854cfbabda3550a8ae77d6 [2020-12-22 13:23:35,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:23:35,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:23:35,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:23:35,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:23:35,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:23:35,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:23:35" (1/1) ... [2020-12-22 13:23:35,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612b8a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:35, skipping insertion in model container [2020-12-22 13:23:35,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:23:35" (1/1) ... [2020-12-22 13:23:35,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:23:36,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:23:37,673 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2020-12-22 13:23:39,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:23:39,170 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:23:39,416 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2020-12-22 13:23:39,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:23:40,281 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:23:40,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40 WrapperNode [2020-12-22 13:23:40,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:23:40,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:23:40,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:23:40,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:23:40,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (1/1) ... [2020-12-22 13:23:40,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (1/1) ... [2020-12-22 13:23:41,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:23:41,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:23:41,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:23:41,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:23:41,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (1/1) ... [2020-12-22 13:23:41,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (1/1) ... [2020-12-22 13:23:41,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (1/1) ... [2020-12-22 13:23:41,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (1/1) ... [2020-12-22 13:23:42,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (1/1) ... [2020-12-22 13:23:42,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (1/1) ... [2020-12-22 13:23:42,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (1/1) ... [2020-12-22 13:23:42,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:23:42,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:23:42,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:23:42,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:23:42,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:23:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:23:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:23:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:23:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:23:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2020-12-22 13:23:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:23:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:23:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:23:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:23:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:23:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:23:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:23:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:23:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:23:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2020-12-22 13:23:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:23:42,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:24:31,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:24:31,338 INFO L299 CfgBuilder]: Removed 2776 assume(true) statements. [2020-12-22 13:24:31,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:24:31 BoogieIcfgContainer [2020-12-22 13:24:31,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:24:31,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:24:31,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:24:31,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:24:31,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:23:35" (1/3) ... [2020-12-22 13:24:31,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3daa00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:24:31, skipping insertion in model container [2020-12-22 13:24:31,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:40" (2/3) ... [2020-12-22 13:24:31,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3daa00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:24:31, skipping insertion in model container [2020-12-22 13:24:31,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:24:31" (3/3) ... [2020-12-22 13:24:31,354 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2020-12-22 13:24:31,361 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:24:31,369 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 13:24:31,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 13:24:31,434 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:24:31,434 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:24:31,434 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:24:31,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:24:31,435 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:24:31,435 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:24:31,435 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:24:31,435 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:24:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states. [2020-12-22 13:24:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 13:24:31,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:31,512 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] [2020-12-22 13:24:31,512 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:31,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1079258943, now seen corresponding path program 1 times [2020-12-22 13:24:31,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:31,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402366125] [2020-12-22 13:24:31,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:24:32,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402366125] [2020-12-22 13:24:32,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:32,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 13:24:32,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035554717] [2020-12-22 13:24:32,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:24:32,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:32,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:24:32,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:24:32,682 INFO L87 Difference]: Start difference. First operand 3351 states. Second operand 6 states. [2020-12-22 13:24:38,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:38,058 INFO L93 Difference]: Finished difference Result 13270 states and 19204 transitions. [2020-12-22 13:24:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:24:38,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-12-22 13:24:38,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:38,144 INFO L225 Difference]: With dead ends: 13270 [2020-12-22 13:24:38,144 INFO L226 Difference]: Without dead ends: 9758 [2020-12-22 13:24:38,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:24:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9758 states. [2020-12-22 13:24:38,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9758 to 9755. [2020-12-22 13:24:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9755 states. [2020-12-22 13:24:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9755 states to 9755 states and 13945 transitions. [2020-12-22 13:24:38,692 INFO L78 Accepts]: Start accepts. Automaton has 9755 states and 13945 transitions. Word has length 24 [2020-12-22 13:24:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:38,692 INFO L481 AbstractCegarLoop]: Abstraction has 9755 states and 13945 transitions. [2020-12-22 13:24:38,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:24:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 9755 states and 13945 transitions. [2020-12-22 13:24:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 13:24:38,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:38,704 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] [2020-12-22 13:24:38,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:24:38,705 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:38,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1835372418, now seen corresponding path program 1 times [2020-12-22 13:24:38,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:38,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382539191] [2020-12-22 13:24:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:24:39,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382539191] [2020-12-22 13:24:39,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:39,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:24:39,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341699017] [2020-12-22 13:24:39,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:24:39,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:39,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:24:39,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:24:39,390 INFO L87 Difference]: Start difference. First operand 9755 states and 13945 transitions. Second operand 5 states. [2020-12-22 13:24:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:40,402 INFO L93 Difference]: Finished difference Result 29227 states and 41792 transitions. [2020-12-22 13:24:40,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:24:40,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 13:24:40,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:40,527 INFO L225 Difference]: With dead ends: 29227 [2020-12-22 13:24:40,528 INFO L226 Difference]: Without dead ends: 19483 [2020-12-22 13:24:40,558 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 13:24:40,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19483 states. [2020-12-22 13:24:41,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19483 to 19483. [2020-12-22 13:24:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19483 states. [2020-12-22 13:24:41,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19483 states to 19483 states and 27843 transitions. [2020-12-22 13:24:41,327 INFO L78 Accepts]: Start accepts. Automaton has 19483 states and 27843 transitions. Word has length 31 [2020-12-22 13:24:41,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:41,329 INFO L481 AbstractCegarLoop]: Abstraction has 19483 states and 27843 transitions. [2020-12-22 13:24:41,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:24:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 19483 states and 27843 transitions. [2020-12-22 13:24:41,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 13:24:41,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:41,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:41,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:24:41,347 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:41,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:41,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1277242410, now seen corresponding path program 1 times [2020-12-22 13:24:41,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:41,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636441353] [2020-12-22 13:24:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:24:42,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636441353] [2020-12-22 13:24:42,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:42,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:24:42,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386046942] [2020-12-22 13:24:42,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:24:42,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:42,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:24:42,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:42,106 INFO L87 Difference]: Start difference. First operand 19483 states and 27843 transitions. Second operand 3 states. [2020-12-22 13:24:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:42,994 INFO L93 Difference]: Finished difference Result 42763 states and 61370 transitions. [2020-12-22 13:24:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:24:42,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 13:24:42,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:43,073 INFO L225 Difference]: With dead ends: 42763 [2020-12-22 13:24:43,073 INFO L226 Difference]: Without dead ends: 23298 [2020-12-22 13:24:43,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23298 states. [2020-12-22 13:24:44,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23298 to 22659. [2020-12-22 13:24:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22659 states. [2020-12-22 13:24:44,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22659 states to 22659 states and 32590 transitions. [2020-12-22 13:24:44,458 INFO L78 Accepts]: Start accepts. Automaton has 22659 states and 32590 transitions. Word has length 72 [2020-12-22 13:24:44,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:44,459 INFO L481 AbstractCegarLoop]: Abstraction has 22659 states and 32590 transitions. [2020-12-22 13:24:44,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:24:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 22659 states and 32590 transitions. [2020-12-22 13:24:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 13:24:44,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:44,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:44,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:24:44,487 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2090471931, now seen corresponding path program 1 times [2020-12-22 13:24:44,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:44,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621593811] [2020-12-22 13:24:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:24:45,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621593811] [2020-12-22 13:24:45,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:45,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:24:45,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070310076] [2020-12-22 13:24:45,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:24:45,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:45,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:24:45,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:24:45,554 INFO L87 Difference]: Start difference. First operand 22659 states and 32590 transitions. Second operand 4 states. [2020-12-22 13:24:48,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:48,672 INFO L93 Difference]: Finished difference Result 108561 states and 156415 transitions. [2020-12-22 13:24:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:24:48,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-22 13:24:48,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:49,074 INFO L225 Difference]: With dead ends: 108561 [2020-12-22 13:24:49,074 INFO L226 Difference]: Without dead ends: 85920 [2020-12-22 13:24:49,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:24:49,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85920 states. [2020-12-22 13:24:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85920 to 22719. [2020-12-22 13:24:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22719 states. [2020-12-22 13:24:51,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22719 states to 22719 states and 32650 transitions. [2020-12-22 13:24:51,215 INFO L78 Accepts]: Start accepts. Automaton has 22719 states and 32650 transitions. Word has length 94 [2020-12-22 13:24:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:51,216 INFO L481 AbstractCegarLoop]: Abstraction has 22719 states and 32650 transitions. [2020-12-22 13:24:51,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:24:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 22719 states and 32650 transitions. [2020-12-22 13:24:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 13:24:51,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:51,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:51,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:24:51,239 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:51,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:51,240 INFO L82 PathProgramCache]: Analyzing trace with hash -280214740, now seen corresponding path program 1 times [2020-12-22 13:24:51,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:51,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440797526] [2020-12-22 13:24:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:24:52,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440797526] [2020-12-22 13:24:52,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:52,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:24:52,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586049211] [2020-12-22 13:24:52,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:24:52,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:52,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:24:52,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:24:52,951 INFO L87 Difference]: Start difference. First operand 22719 states and 32650 transitions. Second operand 4 states. [2020-12-22 13:24:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:57,214 INFO L93 Difference]: Finished difference Result 104617 states and 150038 transitions. [2020-12-22 13:24:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:24:57,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 13:24:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:57,417 INFO L225 Difference]: With dead ends: 104617 [2020-12-22 13:24:57,417 INFO L226 Difference]: Without dead ends: 81916 [2020-12-22 13:24:57,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:24:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81916 states. [2020-12-22 13:24:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81916 to 22819. [2020-12-22 13:24:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22819 states. [2020-12-22 13:24:59,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22819 states to 22819 states and 32750 transitions. [2020-12-22 13:24:59,713 INFO L78 Accepts]: Start accepts. Automaton has 22819 states and 32750 transitions. Word has length 97 [2020-12-22 13:24:59,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:59,714 INFO L481 AbstractCegarLoop]: Abstraction has 22819 states and 32750 transitions. [2020-12-22 13:24:59,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:24:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 22819 states and 32750 transitions. [2020-12-22 13:24:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 13:24:59,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:59,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:59,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:24:59,745 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:59,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1210352489, now seen corresponding path program 1 times [2020-12-22 13:24:59,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:59,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648492539] [2020-12-22 13:24:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:25:00,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648492539] [2020-12-22 13:25:00,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:00,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:25:00,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055711728] [2020-12-22 13:25:00,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:25:00,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:00,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:25:00,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:25:00,836 INFO L87 Difference]: Start difference. First operand 22819 states and 32750 transitions. Second operand 4 states. [2020-12-22 13:25:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:04,683 INFO L93 Difference]: Finished difference Result 87254 states and 125295 transitions. [2020-12-22 13:25:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:25:04,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-12-22 13:25:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:04,809 INFO L225 Difference]: With dead ends: 87254 [2020-12-22 13:25:04,809 INFO L226 Difference]: Without dead ends: 64453 [2020-12-22 13:25:04,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:25:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64453 states. [2020-12-22 13:25:06,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64453 to 22819. [2020-12-22 13:25:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22819 states. [2020-12-22 13:25:06,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22819 states to 22819 states and 32700 transitions. [2020-12-22 13:25:06,801 INFO L78 Accepts]: Start accepts. Automaton has 22819 states and 32700 transitions. Word has length 99 [2020-12-22 13:25:06,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:06,802 INFO L481 AbstractCegarLoop]: Abstraction has 22819 states and 32700 transitions. [2020-12-22 13:25:06,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:25:06,802 INFO L276 IsEmpty]: Start isEmpty. Operand 22819 states and 32700 transitions. [2020-12-22 13:25:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 13:25:06,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:06,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:25:06,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:25:06,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:06,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:06,820 INFO L82 PathProgramCache]: Analyzing trace with hash -335242480, now seen corresponding path program 1 times [2020-12-22 13:25:06,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:06,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895272742] [2020-12-22 13:25:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:25:17,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895272742] [2020-12-22 13:25:17,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:17,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:25:17,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048805525] [2020-12-22 13:25:17,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:25:17,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:17,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:25:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:25:17,279 INFO L87 Difference]: Start difference. First operand 22819 states and 32700 transitions. Second operand 5 states. [2020-12-22 13:25:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:20,872 INFO L93 Difference]: Finished difference Result 46332 states and 66410 transitions. [2020-12-22 13:25:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:25:20,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 13:25:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:20,906 INFO L225 Difference]: With dead ends: 46332 [2020-12-22 13:25:20,906 INFO L226 Difference]: Without dead ends: 23521 [2020-12-22 13:25:20,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:25:20,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23521 states. [2020-12-22 13:25:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23521 to 22822. [2020-12-22 13:25:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22822 states. [2020-12-22 13:25:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22822 states to 22822 states and 32701 transitions. [2020-12-22 13:25:22,247 INFO L78 Accepts]: Start accepts. Automaton has 22822 states and 32701 transitions. Word has length 99 [2020-12-22 13:25:22,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:22,247 INFO L481 AbstractCegarLoop]: Abstraction has 22822 states and 32701 transitions. [2020-12-22 13:25:22,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:25:22,248 INFO L276 IsEmpty]: Start isEmpty. Operand 22822 states and 32701 transitions. [2020-12-22 13:25:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 13:25:22,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:22,265 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:25:22,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:25:22,265 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:22,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:22,266 INFO L82 PathProgramCache]: Analyzing trace with hash 433381483, now seen corresponding path program 1 times [2020-12-22 13:25:22,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:22,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960120431] [2020-12-22 13:25:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:25:31,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960120431] [2020-12-22 13:25:31,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:31,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 13:25:31,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33472003] [2020-12-22 13:25:31,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 13:25:31,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:31,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 13:25:31,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:25:31,779 INFO L87 Difference]: Start difference. First operand 22822 states and 32701 transitions. Second operand 9 states. [2020-12-22 13:25:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:46,580 INFO L93 Difference]: Finished difference Result 184838 states and 265932 transitions. [2020-12-22 13:25:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 13:25:46,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-12-22 13:25:46,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:47,037 INFO L225 Difference]: With dead ends: 184838 [2020-12-22 13:25:47,037 INFO L226 Difference]: Without dead ends: 162034 [2020-12-22 13:25:47,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2020-12-22 13:25:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162034 states. [2020-12-22 13:25:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162034 to 22840. [2020-12-22 13:25:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22840 states. [2020-12-22 13:25:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22840 states to 22840 states and 32689 transitions. [2020-12-22 13:25:50,478 INFO L78 Accepts]: Start accepts. Automaton has 22840 states and 32689 transitions. Word has length 101 [2020-12-22 13:25:50,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:50,478 INFO L481 AbstractCegarLoop]: Abstraction has 22840 states and 32689 transitions. [2020-12-22 13:25:50,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 13:25:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 22840 states and 32689 transitions. [2020-12-22 13:25:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 13:25:50,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:50,497 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:25:50,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:25:50,498 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:50,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:50,498 INFO L82 PathProgramCache]: Analyzing trace with hash 456523542, now seen corresponding path program 1 times [2020-12-22 13:25:50,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:50,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834284775] [2020-12-22 13:25:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:25:53,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834284775] [2020-12-22 13:25:53,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:53,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:25:53,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208413575] [2020-12-22 13:25:53,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:25:53,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:53,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:25:53,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:25:53,550 INFO L87 Difference]: Start difference. First operand 22840 states and 32689 transitions. Second operand 4 states. [2020-12-22 13:26:00,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:00,705 INFO L93 Difference]: Finished difference Result 89404 states and 128077 transitions. [2020-12-22 13:26:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:26:00,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-22 13:26:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:00,793 INFO L225 Difference]: With dead ends: 89404 [2020-12-22 13:26:00,793 INFO L226 Difference]: Without dead ends: 66582 [2020-12-22 13:26:00,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:26:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66582 states. [2020-12-22 13:26:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66582 to 22852. [2020-12-22 13:26:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22852 states. [2020-12-22 13:26:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22852 states to 22852 states and 32701 transitions. [2020-12-22 13:26:03,999 INFO L78 Accepts]: Start accepts. Automaton has 22852 states and 32701 transitions. Word has length 107 [2020-12-22 13:26:03,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:03,999 INFO L481 AbstractCegarLoop]: Abstraction has 22852 states and 32701 transitions. [2020-12-22 13:26:03,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:26:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 22852 states and 32701 transitions. [2020-12-22 13:26:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 13:26:04,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:04,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:26:04,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:26:04,014 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:04,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:04,014 INFO L82 PathProgramCache]: Analyzing trace with hash -111291945, now seen corresponding path program 1 times [2020-12-22 13:26:04,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:04,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436421495] [2020-12-22 13:26:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:26:05,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436421495] [2020-12-22 13:26:05,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:05,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:26:05,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602173339] [2020-12-22 13:26:05,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:26:05,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:05,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:26:05,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:26:05,098 INFO L87 Difference]: Start difference. First operand 22852 states and 32701 transitions. Second operand 3 states. [2020-12-22 13:26:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:10,368 INFO L93 Difference]: Finished difference Result 68262 states and 97728 transitions. [2020-12-22 13:26:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:26:10,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 13:26:10,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:10,422 INFO L225 Difference]: With dead ends: 68262 [2020-12-22 13:26:10,422 INFO L226 Difference]: Without dead ends: 45428 [2020-12-22 13:26:10,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:26:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45428 states. [2020-12-22 13:26:13,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45428 to 22858. [2020-12-22 13:26:13,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22858 states. [2020-12-22 13:26:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22858 states to 22858 states and 32707 transitions. [2020-12-22 13:26:13,487 INFO L78 Accepts]: Start accepts. Automaton has 22858 states and 32707 transitions. Word has length 107 [2020-12-22 13:26:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:13,487 INFO L481 AbstractCegarLoop]: Abstraction has 22858 states and 32707 transitions. [2020-12-22 13:26:13,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:26:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 22858 states and 32707 transitions. [2020-12-22 13:26:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 13:26:13,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:13,498 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:26:13,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:26:13,499 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash -558197850, now seen corresponding path program 1 times [2020-12-22 13:26:13,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:13,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068578702] [2020-12-22 13:26:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:26:14,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068578702] [2020-12-22 13:26:14,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:14,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:26:14,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159466473] [2020-12-22 13:26:14,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:26:14,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:14,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:26:14,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:26:14,128 INFO L87 Difference]: Start difference. First operand 22858 states and 32707 transitions. Second operand 4 states. [2020-12-22 13:26:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:21,992 INFO L93 Difference]: Finished difference Result 83032 states and 119003 transitions. [2020-12-22 13:26:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:26:21,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-12-22 13:26:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:22,059 INFO L225 Difference]: With dead ends: 83032 [2020-12-22 13:26:22,059 INFO L226 Difference]: Without dead ends: 60192 [2020-12-22 13:26:22,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:26:22,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60192 states. [2020-12-22 13:26:25,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60192 to 22858. [2020-12-22 13:26:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22858 states. [2020-12-22 13:26:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22858 states to 22858 states and 32701 transitions. [2020-12-22 13:26:25,527 INFO L78 Accepts]: Start accepts. Automaton has 22858 states and 32701 transitions. Word has length 108 [2020-12-22 13:26:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:25,527 INFO L481 AbstractCegarLoop]: Abstraction has 22858 states and 32701 transitions. [2020-12-22 13:26:25,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:26:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 22858 states and 32701 transitions. [2020-12-22 13:26:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 13:26:25,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:25,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:26:25,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:26:25,537 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:25,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:25,538 INFO L82 PathProgramCache]: Analyzing trace with hash -83361961, now seen corresponding path program 1 times [2020-12-22 13:26:25,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:25,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513299045] [2020-12-22 13:26:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 13:26:43,952 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.