/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-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:27:56,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:27:56,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:27:56,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:27:56,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:27:56,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:27:56,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:27:56,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:27:56,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:27:56,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:27:56,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:27:56,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:27:56,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:27:56,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:27:56,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:27:56,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:27:56,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:27:56,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:27:56,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:27:56,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:27:56,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:27:56,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:27:56,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:27:56,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:27:56,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:27:56,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:27:56,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:27:56,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:27:56,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:27:56,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:27:56,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:27:56,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:27:56,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:27:57,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:27:57,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:27:57,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:27:57,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:27:57,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:27:57,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:27:57,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:27:57,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:27:57,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:27:57,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:27:57,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:27:57,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:27:57,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:27:57,082 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:27:57,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:27:57,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:27:57,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:27:57,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:27:57,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:27:57,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:27:57,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:27:57,083 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:27:57,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:27:57,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:27:57,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:27:57,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:27:57,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:27:57,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:27:57,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:27:57,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:27:57,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:27:57,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:27:57,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:27:57,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:27:57,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:27:57,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:27:57,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:27:57,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:27:57,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:27:57,525 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:27:57,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2020-12-22 13:27:57,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91cd9102b/6af9bbe3688b49058d2fa414c3c7f0a9/FLAG301a39b8c [2020-12-22 13:27:58,729 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:27:58,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2020-12-22 13:27:58,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91cd9102b/6af9bbe3688b49058d2fa414c3c7f0a9/FLAG301a39b8c [2020-12-22 13:27:59,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91cd9102b/6af9bbe3688b49058d2fa414c3c7f0a9 [2020-12-22 13:27:59,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:27:59,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:27:59,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:27:59,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:27:59,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:27:59,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:27:59" (1/1) ... [2020-12-22 13:27:59,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@819f270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:59, skipping insertion in model container [2020-12-22 13:27:59,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:27:59" (1/1) ... [2020-12-22 13:27:59,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:27:59,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:28:00,065 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2020-12-22 13:28:00,066 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5987-5988] [2020-12-22 13:28:00,884 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-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[188410,188423] [2020-12-22 13:28:02,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:28:02,568 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:28:02,751 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2020-12-22 13:28:02,751 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5987-5988] [2020-12-22 13:28:02,777 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-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[188410,188423] [2020-12-22 13:28:03,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:28:03,940 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:28:03,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03 WrapperNode [2020-12-22 13:28:03,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:28:03,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:28:03,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:28:03,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:28:03,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (1/1) ... [2020-12-22 13:28:04,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (1/1) ... [2020-12-22 13:28:04,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:28:04,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:28:04,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:28:04,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:28:04,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (1/1) ... [2020-12-22 13:28:04,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (1/1) ... [2020-12-22 13:28:04,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (1/1) ... [2020-12-22 13:28:04,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (1/1) ... [2020-12-22 13:28:05,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (1/1) ... [2020-12-22 13:28:05,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (1/1) ... [2020-12-22 13:28:05,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (1/1) ... [2020-12-22 13:28:05,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:28:05,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:28:05,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:28:05,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:28:05,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (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 13:28:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:28:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:28:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:28:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2020-12-22 13:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:28:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:28:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:28:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:28:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:28:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:28:05,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:28:27,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:28:27,339 INFO L299 CfgBuilder]: Removed 3092 assume(true) statements. [2020-12-22 13:28:27,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:28:27 BoogieIcfgContainer [2020-12-22 13:28:27,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:28:27,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:28:27,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:28:27,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:28:27,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:27:59" (1/3) ... [2020-12-22 13:28:27,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c412b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:28:27, skipping insertion in model container [2020-12-22 13:28:27,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:03" (2/3) ... [2020-12-22 13:28:27,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c412b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:28:27, skipping insertion in model container [2020-12-22 13:28:27,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:28:27" (3/3) ... [2020-12-22 13:28:27,364 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2020-12-22 13:28:27,371 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:28:27,379 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-12-22 13:28:27,400 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-12-22 13:28:27,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:28:27,443 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:28:27,443 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:28:27,443 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:28:27,443 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:28:27,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:28:27,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:28:27,444 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:28:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states. [2020-12-22 13:28:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 13:28:27,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:27,524 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:27,525 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.startErr3ASSERT_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 13:28:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:27,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1458939173, now seen corresponding path program 1 times [2020-12-22 13:28:27,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:27,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625452867] [2020-12-22 13:28:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:28,511 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 13:28:28,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625452867] [2020-12-22 13:28:28,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:28,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:28:28,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260000828] [2020-12-22 13:28:28,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:28,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:28,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:28,538 INFO L87 Difference]: Start difference. First operand 2705 states. Second operand 3 states. [2020-12-22 13:28:28,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:28,937 INFO L93 Difference]: Finished difference Result 5407 states and 7289 transitions. [2020-12-22 13:28:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:28,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 13:28:28,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:28,982 INFO L225 Difference]: With dead ends: 5407 [2020-12-22 13:28:28,982 INFO L226 Difference]: Without dead ends: 2663 [2020-12-22 13:28:28,998 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 13:28:29,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2020-12-22 13:28:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2020-12-22 13:28:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2663 states. [2020-12-22 13:28:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3474 transitions. [2020-12-22 13:28:29,187 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3474 transitions. Word has length 61 [2020-12-22 13:28:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:29,188 INFO L481 AbstractCegarLoop]: Abstraction has 2663 states and 3474 transitions. [2020-12-22 13:28:29,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3474 transitions. [2020-12-22 13:28:29,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 13:28:29,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:29,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:29,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:28:29,199 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.startErr3ASSERT_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 13:28:29,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:29,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1283166793, now seen corresponding path program 1 times [2020-12-22 13:28:29,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:29,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276809123] [2020-12-22 13:28:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:28:29,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276809123] [2020-12-22 13:28:29,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:29,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:28:29,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360992711] [2020-12-22 13:28:29,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:29,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:29,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:29,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:29,572 INFO L87 Difference]: Start difference. First operand 2663 states and 3474 transitions. Second operand 3 states. [2020-12-22 13:28:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:29,815 INFO L93 Difference]: Finished difference Result 5236 states and 6847 transitions. [2020-12-22 13:28:29,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:29,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 13:28:29,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:29,831 INFO L225 Difference]: With dead ends: 5236 [2020-12-22 13:28:29,831 INFO L226 Difference]: Without dead ends: 2664 [2020-12-22 13:28:29,837 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 13:28:29,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2020-12-22 13:28:29,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2664. [2020-12-22 13:28:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-12-22 13:28:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3475 transitions. [2020-12-22 13:28:29,913 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3475 transitions. Word has length 63 [2020-12-22 13:28:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:29,914 INFO L481 AbstractCegarLoop]: Abstraction has 2664 states and 3475 transitions. [2020-12-22 13:28:29,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3475 transitions. [2020-12-22 13:28:29,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 13:28:29,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:29,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:29,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:28:29,918 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.startErr3ASSERT_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 13:28:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:29,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1052502580, now seen corresponding path program 1 times [2020-12-22 13:28:29,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:29,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192588244] [2020-12-22 13:28:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:28:30,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192588244] [2020-12-22 13:28:30,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:30,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:28:30,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407560516] [2020-12-22 13:28:30,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:30,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:30,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:30,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:30,214 INFO L87 Difference]: Start difference. First operand 2664 states and 3475 transitions. Second operand 3 states. [2020-12-22 13:28:30,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:30,655 INFO L93 Difference]: Finished difference Result 6940 states and 9075 transitions. [2020-12-22 13:28:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:30,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 13:28:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:30,684 INFO L225 Difference]: With dead ends: 6940 [2020-12-22 13:28:30,685 INFO L226 Difference]: Without dead ends: 4369 [2020-12-22 13:28:30,694 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 13:28:30,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2020-12-22 13:28:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 4264. [2020-12-22 13:28:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4264 states. [2020-12-22 13:28:30,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 5596 transitions. [2020-12-22 13:28:30,835 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 5596 transitions. Word has length 64 [2020-12-22 13:28:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:30,838 INFO L481 AbstractCegarLoop]: Abstraction has 4264 states and 5596 transitions. [2020-12-22 13:28:30,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 5596 transitions. [2020-12-22 13:28:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 13:28:30,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:30,843 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, 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 13:28:30,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:28:30,844 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.startErr3ASSERT_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 13:28:30,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:30,844 INFO L82 PathProgramCache]: Analyzing trace with hash 999711383, now seen corresponding path program 1 times [2020-12-22 13:28:30,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:30,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653898570] [2020-12-22 13:28:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:28:31,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653898570] [2020-12-22 13:28:31,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:31,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:28:31,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98815361] [2020-12-22 13:28:31,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:31,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:31,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:31,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:31,164 INFO L87 Difference]: Start difference. First operand 4264 states and 5596 transitions. Second operand 3 states. [2020-12-22 13:28:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:31,633 INFO L93 Difference]: Finished difference Result 9392 states and 12383 transitions. [2020-12-22 13:28:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:31,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 13:28:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:31,661 INFO L225 Difference]: With dead ends: 9392 [2020-12-22 13:28:31,661 INFO L226 Difference]: Without dead ends: 5221 [2020-12-22 13:28:31,671 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 13:28:31,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2020-12-22 13:28:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 5217. [2020-12-22 13:28:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5217 states. [2020-12-22 13:28:31,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 6888 transitions. [2020-12-22 13:28:31,852 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 6888 transitions. Word has length 76 [2020-12-22 13:28:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:31,853 INFO L481 AbstractCegarLoop]: Abstraction has 5217 states and 6888 transitions. [2020-12-22 13:28:31,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:31,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 6888 transitions. [2020-12-22 13:28:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 13:28:31,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:31,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:31,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:28:31,857 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.startErr3ASSERT_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 13:28:31,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:31,858 INFO L82 PathProgramCache]: Analyzing trace with hash 735789011, now seen corresponding path program 1 times [2020-12-22 13:28:31,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:31,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396606828] [2020-12-22 13:28:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:28:32,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396606828] [2020-12-22 13:28:32,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:32,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:28:32,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620783659] [2020-12-22 13:28:32,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:28:32,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:32,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:28:32,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:28:32,116 INFO L87 Difference]: Start difference. First operand 5217 states and 6888 transitions. Second operand 4 states. [2020-12-22 13:28:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:34,392 INFO L93 Difference]: Finished difference Result 10349 states and 13679 transitions. [2020-12-22 13:28:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:28:34,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-12-22 13:28:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:34,420 INFO L225 Difference]: With dead ends: 10349 [2020-12-22 13:28:34,420 INFO L226 Difference]: Without dead ends: 5217 [2020-12-22 13:28:34,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:28:34,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5217 states. [2020-12-22 13:28:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5217 to 5217. [2020-12-22 13:28:34,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5217 states. [2020-12-22 13:28:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 6880 transitions. [2020-12-22 13:28:34,607 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 6880 transitions. Word has length 93 [2020-12-22 13:28:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:34,611 INFO L481 AbstractCegarLoop]: Abstraction has 5217 states and 6880 transitions. [2020-12-22 13:28:34,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:28:34,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 6880 transitions. [2020-12-22 13:28:34,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 13:28:34,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:34,622 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, 1, 1, 1, 1, 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 13:28:34,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:28:34,622 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.startErr3ASSERT_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 13:28:34,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:34,623 INFO L82 PathProgramCache]: Analyzing trace with hash -373689891, now seen corresponding path program 1 times [2020-12-22 13:28:34,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:34,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266412933] [2020-12-22 13:28:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:28:35,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266412933] [2020-12-22 13:28:35,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:35,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:28:35,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202671653] [2020-12-22 13:28:35,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:35,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:35,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:35,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:35,007 INFO L87 Difference]: Start difference. First operand 5217 states and 6880 transitions. Second operand 3 states. [2020-12-22 13:28:35,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:35,412 INFO L93 Difference]: Finished difference Result 8845 states and 11793 transitions. [2020-12-22 13:28:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:35,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-22 13:28:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:35,476 INFO L225 Difference]: With dead ends: 8845 [2020-12-22 13:28:35,477 INFO L226 Difference]: Without dead ends: 8815 [2020-12-22 13:28:35,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2020-12-22 13:28:35,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 8467. [2020-12-22 13:28:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8467 states. [2020-12-22 13:28:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8467 states to 8467 states and 11314 transitions. [2020-12-22 13:28:35,785 INFO L78 Accepts]: Start accepts. Automaton has 8467 states and 11314 transitions. Word has length 100 [2020-12-22 13:28:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:35,786 INFO L481 AbstractCegarLoop]: Abstraction has 8467 states and 11314 transitions. [2020-12-22 13:28:35,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 8467 states and 11314 transitions. [2020-12-22 13:28:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 13:28:35,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:35,793 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:35,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:28:35,794 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.startErr3ASSERT_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 13:28:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:35,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1819338030, now seen corresponding path program 1 times [2020-12-22 13:28:35,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:35,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776424162] [2020-12-22 13:28:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:28:36,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776424162] [2020-12-22 13:28:36,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693720563] [2020-12-22 13:28:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:37,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:28:37,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:28:37,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:28:37,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 13:28:37,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324154528] [2020-12-22 13:28:37,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:37,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:37,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:37,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:37,647 INFO L87 Difference]: Start difference. First operand 8467 states and 11314 transitions. Second operand 3 states. [2020-12-22 13:28:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:38,376 INFO L93 Difference]: Finished difference Result 20118 states and 26983 transitions. [2020-12-22 13:28:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:38,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2020-12-22 13:28:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:38,407 INFO L225 Difference]: With dead ends: 20118 [2020-12-22 13:28:38,407 INFO L226 Difference]: Without dead ends: 11744 [2020-12-22 13:28:38,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11744 states. [2020-12-22 13:28:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11744 to 11614. [2020-12-22 13:28:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11614 states. [2020-12-22 13:28:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11614 states to 11614 states and 15555 transitions. [2020-12-22 13:28:38,861 INFO L78 Accepts]: Start accepts. Automaton has 11614 states and 15555 transitions. Word has length 119 [2020-12-22 13:28:38,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:38,862 INFO L481 AbstractCegarLoop]: Abstraction has 11614 states and 15555 transitions. [2020-12-22 13:28:38,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 11614 states and 15555 transitions. [2020-12-22 13:28:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 13:28:38,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:38,877 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:39,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 13:28:39,092 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.startErr3ASSERT_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 13:28:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:39,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1542045347, now seen corresponding path program 1 times [2020-12-22 13:28:39,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:39,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976850239] [2020-12-22 13:28:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 13:28:39,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976850239] [2020-12-22 13:28:39,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:39,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:28:39,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920561842] [2020-12-22 13:28:39,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:28:39,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:39,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:28:39,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:28:39,429 INFO L87 Difference]: Start difference. First operand 11614 states and 15555 transitions. Second operand 5 states. [2020-12-22 13:28:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:42,083 INFO L93 Difference]: Finished difference Result 34591 states and 46678 transitions. [2020-12-22 13:28:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:28:42,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-12-22 13:28:42,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:42,153 INFO L225 Difference]: With dead ends: 34591 [2020-12-22 13:28:42,153 INFO L226 Difference]: Without dead ends: 23070 [2020-12-22 13:28:42,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:28:42,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23070 states. [2020-12-22 13:28:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23070 to 11647. [2020-12-22 13:28:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11647 states. [2020-12-22 13:28:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11647 states to 11647 states and 15588 transitions. [2020-12-22 13:28:42,736 INFO L78 Accepts]: Start accepts. Automaton has 11647 states and 15588 transitions. Word has length 138 [2020-12-22 13:28:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:42,737 INFO L481 AbstractCegarLoop]: Abstraction has 11647 states and 15588 transitions. [2020-12-22 13:28:42,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:28:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 11647 states and 15588 transitions. [2020-12-22 13:28:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 13:28:42,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:42,749 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:42,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:28:42,749 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.startErr3ASSERT_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 13:28:42,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:42,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2072863579, now seen corresponding path program 1 times [2020-12-22 13:28:42,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:42,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384941036] [2020-12-22 13:28:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:28:43,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384941036] [2020-12-22 13:28:43,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371164121] [2020-12-22 13:28:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:44,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 2805 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:28:44,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:28:44,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:28:44,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:28:44,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356609640] [2020-12-22 13:28:44,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:28:44,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:44,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:28:44,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:28:44,685 INFO L87 Difference]: Start difference. First operand 11647 states and 15588 transitions. Second operand 6 states. [2020-12-22 13:28:45,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:45,547 INFO L93 Difference]: Finished difference Result 23282 states and 31228 transitions. [2020-12-22 13:28:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:28:45,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-12-22 13:28:45,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:45,576 INFO L225 Difference]: With dead ends: 23282 [2020-12-22 13:28:45,576 INFO L226 Difference]: Without dead ends: 11721 [2020-12-22 13:28:45,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:28:45,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11721 states. [2020-12-22 13:28:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11721 to 11721. [2020-12-22 13:28:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11721 states. [2020-12-22 13:28:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11721 states to 11721 states and 15662 transitions. [2020-12-22 13:28:46,186 INFO L78 Accepts]: Start accepts. Automaton has 11721 states and 15662 transitions. Word has length 138 [2020-12-22 13:28:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:46,187 INFO L481 AbstractCegarLoop]: Abstraction has 11721 states and 15662 transitions. [2020-12-22 13:28:46,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:28:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11721 states and 15662 transitions. [2020-12-22 13:28:46,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 13:28:46,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:46,199 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:28:46,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:46,414 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.startErr3ASSERT_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 13:28:46,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:46,414 INFO L82 PathProgramCache]: Analyzing trace with hash 847254975, now seen corresponding path program 2 times [2020-12-22 13:28:46,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:46,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048497254] [2020-12-22 13:28:46,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 13:28:46,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048497254] [2020-12-22 13:28:46,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108631559] [2020-12-22 13:28:46,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:29:37,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:29:37,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:29:37,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:29:37,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:29:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 13:29:37,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:29:37,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 13:29:37,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982267384] [2020-12-22 13:29:37,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:29:37,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:37,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:29:37,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:29:37,896 INFO L87 Difference]: Start difference. First operand 11721 states and 15662 transitions. Second operand 8 states. [2020-12-22 13:29:38,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:38,891 INFO L93 Difference]: Finished difference Result 23393 states and 31303 transitions. [2020-12-22 13:29:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:29:38,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-12-22 13:29:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:38,923 INFO L225 Difference]: With dead ends: 23393 [2020-12-22 13:29:38,923 INFO L226 Difference]: Without dead ends: 11759 [2020-12-22 13:29:38,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:29:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11759 states. [2020-12-22 13:29:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11759 to 11759. [2020-12-22 13:29:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11759 states. [2020-12-22 13:29:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11759 states to 11759 states and 15700 transitions. [2020-12-22 13:29:39,408 INFO L78 Accepts]: Start accepts. Automaton has 11759 states and 15700 transitions. Word has length 140 [2020-12-22 13:29:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:29:39,408 INFO L481 AbstractCegarLoop]: Abstraction has 11759 states and 15700 transitions. [2020-12-22 13:29:39,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:29:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 11759 states and 15700 transitions. [2020-12-22 13:29:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 13:29:39,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:39,421 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:29:39,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 13:29:39,635 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.startErr3ASSERT_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 13:29:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2097652965, now seen corresponding path program 3 times [2020-12-22 13:29:39,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:39,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146970607] [2020-12-22 13:29:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:29:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-22 13:29:40,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146970607] [2020-12-22 13:29:40,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338319585] [2020-12-22 13:29:40,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:15,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 13:30:15,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:30:15,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:30:15,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-22 13:30:15,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:30:15,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2020-12-22 13:30:15,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089125143] [2020-12-22 13:30:15,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:30:15,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:15,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:30:15,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:30:15,891 INFO L87 Difference]: Start difference. First operand 11759 states and 15700 transitions. Second operand 8 states. [2020-12-22 13:30:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:16,615 INFO L93 Difference]: Finished difference Result 23433 states and 31308 transitions. [2020-12-22 13:30:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:30:16,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-12-22 13:30:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:16,644 INFO L225 Difference]: With dead ends: 23433 [2020-12-22 13:30:16,644 INFO L226 Difference]: Without dead ends: 11762 [2020-12-22 13:30:16,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:30:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11762 states. [2020-12-22 13:30:17,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11762 to 11762. [2020-12-22 13:30:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11762 states. [2020-12-22 13:30:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11762 states to 11762 states and 15703 transitions. [2020-12-22 13:30:17,143 INFO L78 Accepts]: Start accepts. Automaton has 11762 states and 15703 transitions. Word has length 142 [2020-12-22 13:30:17,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:17,143 INFO L481 AbstractCegarLoop]: Abstraction has 11762 states and 15703 transitions. [2020-12-22 13:30:17,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:30:17,144 INFO L276 IsEmpty]: Start isEmpty. Operand 11762 states and 15703 transitions. [2020-12-22 13:30:17,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 13:30:17,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:17,161 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:30:17,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:17,375 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.startErr3ASSERT_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 13:30:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:17,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1032725332, now seen corresponding path program 4 times [2020-12-22 13:30:17,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:17,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142903678] [2020-12-22 13:30:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-22 13:30:17,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142903678] [2020-12-22 13:30:17,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445096542] [2020-12-22 13:30:17,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:18,833 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 13:30:18,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:30:18,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2847 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 13:30:18,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-22 13:30:19,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:30:19,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-22 13:30:19,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534752242] [2020-12-22 13:30:19,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 13:30:19,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:19,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 13:30:19,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:30:19,063 INFO L87 Difference]: Start difference. First operand 11762 states and 15703 transitions. Second operand 12 states. [2020-12-22 13:30:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:19,976 INFO L93 Difference]: Finished difference Result 23509 states and 31455 transitions. [2020-12-22 13:30:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 13:30:19,977 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2020-12-22 13:30:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:20,005 INFO L225 Difference]: With dead ends: 23509 [2020-12-22 13:30:20,005 INFO L226 Difference]: Without dead ends: 11836 [2020-12-22 13:30:20,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:30:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11836 states. [2020-12-22 13:30:20,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11836 to 11836. [2020-12-22 13:30:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11836 states. [2020-12-22 13:30:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11836 states to 11836 states and 15777 transitions. [2020-12-22 13:30:20,467 INFO L78 Accepts]: Start accepts. Automaton has 11836 states and 15777 transitions. Word has length 145 [2020-12-22 13:30:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:20,467 INFO L481 AbstractCegarLoop]: Abstraction has 11836 states and 15777 transitions. [2020-12-22 13:30:20,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 13:30:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 11836 states and 15777 transitions. [2020-12-22 13:30:20,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 13:30:20,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:20,480 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:30:20,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 13:30:20,696 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.startErr3ASSERT_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 13:30:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash 591329400, now seen corresponding path program 5 times [2020-12-22 13:30:20,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:20,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765634724] [2020-12-22 13:30:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-22 13:30:21,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765634724] [2020-12-22 13:30:21,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945296820] [2020-12-22 13:30:21,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:21,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:30:21,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:30:21,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:30:21,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-12-22 13:30:21,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:30:21,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2020-12-22 13:30:21,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933275831] [2020-12-22 13:30:21,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:30:21,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:21,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:30:21,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:30:21,825 INFO L87 Difference]: Start difference. First operand 11836 states and 15777 transitions. Second operand 3 states. [2020-12-22 13:30:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:22,227 INFO L93 Difference]: Finished difference Result 23580 states and 31454 transitions. [2020-12-22 13:30:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:30:22,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-12-22 13:30:22,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:22,250 INFO L225 Difference]: With dead ends: 23580 [2020-12-22 13:30:22,251 INFO L226 Difference]: Without dead ends: 11846 [2020-12-22 13:30:22,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:30:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2020-12-22 13:30:22,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 11838. [2020-12-22 13:30:22,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11838 states. [2020-12-22 13:30:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11838 states to 11838 states and 15779 transitions. [2020-12-22 13:30:22,658 INFO L78 Accepts]: Start accepts. Automaton has 11838 states and 15779 transitions. Word has length 147 [2020-12-22 13:30:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:22,659 INFO L481 AbstractCegarLoop]: Abstraction has 11838 states and 15779 transitions. [2020-12-22 13:30:22,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:30:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 11838 states and 15779 transitions. [2020-12-22 13:30:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 13:30:22,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:22,671 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:30:22,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:22,885 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.startErr3ASSERT_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 13:30:22,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:22,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1653566638, now seen corresponding path program 1 times [2020-12-22 13:30:22,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:22,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621046067] [2020-12-22 13:30:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-22 13:30:23,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621046067] [2020-12-22 13:30:23,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773613608] [2020-12-22 13:30:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:24,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 13:30:24,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-22 13:30:24,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:30:24,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-12-22 13:30:24,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461932573] [2020-12-22 13:30:24,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 13:30:24,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:24,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 13:30:24,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2020-12-22 13:30:24,739 INFO L87 Difference]: Start difference. First operand 11838 states and 15779 transitions. Second operand 14 states. [2020-12-22 13:30:25,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:25,473 INFO L93 Difference]: Finished difference Result 23624 states and 31534 transitions. [2020-12-22 13:30:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 13:30:25,474 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 151 [2020-12-22 13:30:25,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:25,510 INFO L225 Difference]: With dead ends: 23624 [2020-12-22 13:30:25,510 INFO L226 Difference]: Without dead ends: 11876 [2020-12-22 13:30:25,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2020-12-22 13:30:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11876 states. [2020-12-22 13:30:25,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11876 to 11876. [2020-12-22 13:30:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11876 states. [2020-12-22 13:30:25,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11876 states to 11876 states and 15817 transitions. [2020-12-22 13:30:25,934 INFO L78 Accepts]: Start accepts. Automaton has 11876 states and 15817 transitions. Word has length 151 [2020-12-22 13:30:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:25,934 INFO L481 AbstractCegarLoop]: Abstraction has 11876 states and 15817 transitions. [2020-12-22 13:30:25,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 13:30:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 11876 states and 15817 transitions. [2020-12-22 13:30:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 13:30:25,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:25,947 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:30:26,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 13:30:26,161 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.startErr3ASSERT_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 13:30:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash 867639662, now seen corresponding path program 2 times [2020-12-22 13:30:26,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:26,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189551630] [2020-12-22 13:30:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-12-22 13:30:26,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189551630] [2020-12-22 13:30:26,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875698328] [2020-12-22 13:30:26,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:56,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:30:56,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:30:56,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 13:30:56,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-12-22 13:30:56,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:30:56,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 13:30:56,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693783973] [2020-12-22 13:30:56,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 13:30:56,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:56,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 13:30:56,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:30:56,696 INFO L87 Difference]: Start difference. First operand 11876 states and 15817 transitions. Second operand 16 states. [2020-12-22 13:30:57,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:57,609 INFO L93 Difference]: Finished difference Result 23699 states and 31609 transitions. [2020-12-22 13:30:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 13:30:57,610 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 153 [2020-12-22 13:30:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:57,635 INFO L225 Difference]: With dead ends: 23699 [2020-12-22 13:30:57,635 INFO L226 Difference]: Without dead ends: 11914 [2020-12-22 13:30:57,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:30:57,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11914 states. [2020-12-22 13:30:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11914 to 11914. [2020-12-22 13:30:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11914 states. [2020-12-22 13:30:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11914 states to 11914 states and 15855 transitions. [2020-12-22 13:30:58,063 INFO L78 Accepts]: Start accepts. Automaton has 11914 states and 15855 transitions. Word has length 153 [2020-12-22 13:30:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:58,064 INFO L481 AbstractCegarLoop]: Abstraction has 11914 states and 15855 transitions. [2020-12-22 13:30:58,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 13:30:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11914 states and 15855 transitions. [2020-12-22 13:30:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 13:30:58,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:58,077 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:30:58,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 13:30:58,290 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.startErr3ASSERT_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 13:30:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:58,292 INFO L82 PathProgramCache]: Analyzing trace with hash 986575762, now seen corresponding path program 3 times [2020-12-22 13:30:58,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:58,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782961335] [2020-12-22 13:30:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-12-22 13:30:58,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782961335] [2020-12-22 13:30:58,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18518643] [2020-12-22 13:30:58,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:31:35,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 13:31:35,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:31:35,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 2419 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:31:35,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:31:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-12-22 13:31:35,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:31:35,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2020-12-22 13:31:35,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251557447] [2020-12-22 13:31:35,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 13:31:35,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:31:35,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 13:31:35,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:31:35,490 INFO L87 Difference]: Start difference. First operand 11914 states and 15855 transitions. Second operand 13 states. [2020-12-22 13:31:36,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:31:36,232 INFO L93 Difference]: Finished difference Result 23739 states and 31614 transitions. [2020-12-22 13:31:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 13:31:36,232 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 155 [2020-12-22 13:31:36,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:31:36,254 INFO L225 Difference]: With dead ends: 23739 [2020-12-22 13:31:36,255 INFO L226 Difference]: Without dead ends: 11917 [2020-12-22 13:31:36,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:31:36,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11917 states. [2020-12-22 13:31:36,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11917 to 11917. [2020-12-22 13:31:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11917 states. [2020-12-22 13:31:36,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11917 states to 11917 states and 15858 transitions. [2020-12-22 13:31:36,678 INFO L78 Accepts]: Start accepts. Automaton has 11917 states and 15858 transitions. Word has length 155 [2020-12-22 13:31:36,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:31:36,678 INFO L481 AbstractCegarLoop]: Abstraction has 11917 states and 15858 transitions. [2020-12-22 13:31:36,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 13:31:36,678 INFO L276 IsEmpty]: Start isEmpty. Operand 11917 states and 15858 transitions. [2020-12-22 13:31:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 13:31:36,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:31:36,689 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:31:36,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 13:31:36,903 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_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 13:31:36,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:31:36,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2077305863, now seen corresponding path program 4 times [2020-12-22 13:31:36,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:31:36,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194029808] [2020-12-22 13:31:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:31:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:31:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-12-22 13:31:37,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194029808] [2020-12-22 13:31:37,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823221827] [2020-12-22 13:31:37,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:31:38,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 13:31:38,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:31:38,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 13:31:38,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:31:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-12-22 13:31:38,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:31:38,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 13:31:38,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19921667] [2020-12-22 13:31:38,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 13:31:38,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:31:38,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 13:31:38,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:31:38,418 INFO L87 Difference]: Start difference. First operand 11917 states and 15858 transitions. Second operand 10 states. [2020-12-22 13:31:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:31:39,201 INFO L93 Difference]: Finished difference Result 23727 states and 31598 transitions. [2020-12-22 13:31:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 13:31:39,201 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-12-22 13:31:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:31:39,220 INFO L225 Difference]: With dead ends: 23727 [2020-12-22 13:31:39,221 INFO L226 Difference]: Without dead ends: 11918 [2020-12-22 13:31:39,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:31:39,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11918 states. [2020-12-22 13:31:39,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11918 to 11918. [2020-12-22 13:31:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11918 states. [2020-12-22 13:31:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11918 states to 11918 states and 15859 transitions. [2020-12-22 13:31:39,640 INFO L78 Accepts]: Start accepts. Automaton has 11918 states and 15859 transitions. Word has length 158 [2020-12-22 13:31:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:31:39,640 INFO L481 AbstractCegarLoop]: Abstraction has 11918 states and 15859 transitions. [2020-12-22 13:31:39,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 13:31:39,640 INFO L276 IsEmpty]: Start isEmpty. Operand 11918 states and 15859 transitions. [2020-12-22 13:31:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 13:31:39,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:31:39,650 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:31:39,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 13:31:39,864 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_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 13:31:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:31:39,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1486291954, now seen corresponding path program 5 times [2020-12-22 13:31:39,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:31:39,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41388396] [2020-12-22 13:31:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:31:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:31:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-12-22 13:31:40,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41388396] [2020-12-22 13:31:40,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940634500] [2020-12-22 13:31:40,233 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:31:41,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-12-22 13:31:41,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:31:41,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:31:41,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:31:41,616 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-12-22 13:31:41,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:31:41,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 13:31:41,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995768314] [2020-12-22 13:31:41,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:31:41,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:31:41,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:31:41,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:31:41,619 INFO L87 Difference]: Start difference. First operand 11918 states and 15859 transitions. Second operand 5 states. [2020-12-22 13:31:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:31:42,010 INFO L93 Difference]: Finished difference Result 23748 states and 31626 transitions. [2020-12-22 13:31:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:31:42,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-12-22 13:31:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:31:42,029 INFO L225 Difference]: With dead ends: 23748 [2020-12-22 13:31:42,029 INFO L226 Difference]: Without dead ends: 11940 [2020-12-22 13:31:42,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:31:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11940 states. [2020-12-22 13:31:42,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11940 to 11936. [2020-12-22 13:31:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11936 states. [2020-12-22 13:31:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11936 states to 11936 states and 15881 transitions. [2020-12-22 13:31:42,410 INFO L78 Accepts]: Start accepts. Automaton has 11936 states and 15881 transitions. Word has length 159 [2020-12-22 13:31:42,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:31:42,410 INFO L481 AbstractCegarLoop]: Abstraction has 11936 states and 15881 transitions. [2020-12-22 13:31:42,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:31:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 11936 states and 15881 transitions. [2020-12-22 13:31:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-22 13:31:42,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:31:42,420 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:31:42,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 13:31:42,635 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_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 13:31:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:31:42,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1412672632, now seen corresponding path program 1 times [2020-12-22 13:31:42,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:31:42,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223746770] [2020-12-22 13:31:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:31:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:31:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-12-22 13:31:43,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223746770] [2020-12-22 13:31:43,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:31:43,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:31:43,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807965521] [2020-12-22 13:31:43,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:31:43,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:31:43,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:31:43,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:31:43,179 INFO L87 Difference]: Start difference. First operand 11936 states and 15881 transitions. Second operand 7 states.