/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_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:32:58,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:32:58,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:32:58,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:32:58,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:32:58,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:32:58,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:32:58,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:32:58,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:32:58,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:32:58,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:32:58,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:32:58,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:32:59,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:32:59,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:32:59,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:32:59,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:32:59,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:32:59,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:32:59,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:32:59,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:32:59,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:32:59,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:32:59,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:32:59,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 13:32:59,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:32:59,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:32:59,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:32:59,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:32:59,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:32:59,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:32:59,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:32:59,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:32:59,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:32:59,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:32:59,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:32:59,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:32:59,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:32:59,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:32:59,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:32:59,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:32:59,114 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:32:59,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:32:59,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:32:59,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:32:59,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:32:59,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:32:59,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:32:59,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:32:59,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:32:59,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:32:59,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:32:59,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:32:59,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:32:59,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:32:59,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:32:59,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:32:59,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:32:59,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:32:59,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:32:59,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:32:59,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:32:59,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:32:59,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:32:59,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:32:59,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:32:59,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:32:59,596 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:32:59,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2020-12-22 13:32:59,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c494ebe0/d12865226ff449acbdd093c872e944f4/FLAG1e6227b5d [2020-12-22 13:33:00,823 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:33:00,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2020-12-22 13:33:00,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c494ebe0/d12865226ff449acbdd093c872e944f4/FLAG1e6227b5d [2020-12-22 13:33:01,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c494ebe0/d12865226ff449acbdd093c872e944f4 [2020-12-22 13:33:01,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:33:01,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:33:01,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:33:01,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:33:01,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:33:01,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:33:01" (1/1) ... [2020-12-22 13:33:01,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547598cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:01, skipping insertion in model container [2020-12-22 13:33:01,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:33:01" (1/1) ... [2020-12-22 13:33:01,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:33:01,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:33:02,060 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2020-12-22 13:33:02,060 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5339-5340] [2020-12-22 13:33:02,315 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_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i[158055,158068] [2020-12-22 13:33:05,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:33:05,652 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:33:05,806 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2020-12-22 13:33:05,807 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5339-5340] [2020-12-22 13:33:05,812 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_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i[158055,158068] [2020-12-22 13:33:06,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:33:07,351 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:33:07,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07 WrapperNode [2020-12-22 13:33:07,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:33:07,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:33:07,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:33:07,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:33:07,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (1/1) ... [2020-12-22 13:33:07,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (1/1) ... [2020-12-22 13:33:11,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:33:11,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:33:11,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:33:11,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:33:11,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (1/1) ... [2020-12-22 13:33:11,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (1/1) ... [2020-12-22 13:33:12,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (1/1) ... [2020-12-22 13:33:12,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (1/1) ... [2020-12-22 13:33:14,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (1/1) ... [2020-12-22 13:33:15,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (1/1) ... [2020-12-22 13:33:15,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (1/1) ... [2020-12-22 13:33:16,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:33:16,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:33:16,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:33:16,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:33:16,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (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 13:33:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:33:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:33:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:33:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:33:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:33:16,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:33:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:33:16,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:33:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:33:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:33:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:33:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:33:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:33:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:33:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:34:54,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:34:54,566 INFO L299 CfgBuilder]: Removed 20027 assume(true) statements. [2020-12-22 13:34:54,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:34:54 BoogieIcfgContainer [2020-12-22 13:34:54,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:34:54,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:34:54,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:34:54,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:34:54,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:33:01" (1/3) ... [2020-12-22 13:34:54,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0b0191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:34:54, skipping insertion in model container [2020-12-22 13:34:54,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:33:07" (2/3) ... [2020-12-22 13:34:54,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0b0191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:34:54, skipping insertion in model container [2020-12-22 13:34:54,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:34:54" (3/3) ... [2020-12-22 13:34:54,598 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2020-12-22 13:34:54,605 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:34:54,617 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 13:34:54,645 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 13:34:54,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:34:54,750 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:34:54,750 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:34:54,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:34:54,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:34:54,751 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:34:54,752 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:34:54,752 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:34:54,979 INFO L276 IsEmpty]: Start isEmpty. Operand 18345 states. [2020-12-22 13:34:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 13:34:55,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:34:55,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:34:55,011 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:34:55,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:34:55,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2025150548, now seen corresponding path program 1 times [2020-12-22 13:34:55,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:34:55,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513553856] [2020-12-22 13:34:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:34:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:34:56,406 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 13:34:56,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513553856] [2020-12-22 13:34:56,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:34:56,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:34:56,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215457769] [2020-12-22 13:34:56,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:34:56,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:34:56,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:34:56,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:34:56,437 INFO L87 Difference]: Start difference. First operand 18345 states. Second operand 3 states. [2020-12-22 13:34:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:34:57,626 INFO L93 Difference]: Finished difference Result 36632 states and 50207 transitions. [2020-12-22 13:34:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:34:57,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 13:34:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:34:57,759 INFO L225 Difference]: With dead ends: 36632 [2020-12-22 13:34:57,760 INFO L226 Difference]: Without dead ends: 18225 [2020-12-22 13:34:57,815 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 13:34:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18225 states. [2020-12-22 13:34:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18225 to 18225. [2020-12-22 13:34:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18225 states. [2020-12-22 13:34:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18225 states to 18225 states and 24891 transitions. [2020-12-22 13:34:58,855 INFO L78 Accepts]: Start accepts. Automaton has 18225 states and 24891 transitions. Word has length 36 [2020-12-22 13:34:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:34:58,857 INFO L481 AbstractCegarLoop]: Abstraction has 18225 states and 24891 transitions. [2020-12-22 13:34:58,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:34:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 18225 states and 24891 transitions. [2020-12-22 13:34:58,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 13:34:58,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:34:58,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:34:58,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:34:58,866 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:34:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:34:58,868 INFO L82 PathProgramCache]: Analyzing trace with hash 721741364, now seen corresponding path program 1 times [2020-12-22 13:34:58,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:34:58,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131382675] [2020-12-22 13:34:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:34:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:34:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:34:59,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131382675] [2020-12-22 13:34:59,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:34:59,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:34:59,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905168392] [2020-12-22 13:34:59,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:34:59,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:34:59,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:34:59,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:34:59,504 INFO L87 Difference]: Start difference. First operand 18225 states and 24891 transitions. Second operand 3 states. [2020-12-22 13:35:01,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:35:01,129 INFO L93 Difference]: Finished difference Result 48934 states and 66850 transitions. [2020-12-22 13:35:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:35:01,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-22 13:35:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:35:01,263 INFO L225 Difference]: With dead ends: 48934 [2020-12-22 13:35:01,263 INFO L226 Difference]: Without dead ends: 30740 [2020-12-22 13:35:01,304 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 13:35:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30740 states. [2020-12-22 13:35:02,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30740 to 29792. [2020-12-22 13:35:02,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29792 states. [2020-12-22 13:35:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29792 states to 29792 states and 40711 transitions. [2020-12-22 13:35:02,304 INFO L78 Accepts]: Start accepts. Automaton has 29792 states and 40711 transitions. Word has length 37 [2020-12-22 13:35:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:35:02,305 INFO L481 AbstractCegarLoop]: Abstraction has 29792 states and 40711 transitions. [2020-12-22 13:35:02,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:35:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 29792 states and 40711 transitions. [2020-12-22 13:35:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 13:35:02,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:35:02,316 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] [2020-12-22 13:35:02,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:35:02,317 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:35:02,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:35:02,320 INFO L82 PathProgramCache]: Analyzing trace with hash -332296433, now seen corresponding path program 1 times [2020-12-22 13:35:02,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:35:02,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025570891] [2020-12-22 13:35:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:35:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:35:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:35:03,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025570891] [2020-12-22 13:35:03,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:35:03,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:35:03,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448339367] [2020-12-22 13:35:03,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:35:03,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:35:03,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:35:03,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:35:03,324 INFO L87 Difference]: Start difference. First operand 29792 states and 40711 transitions. Second operand 3 states. [2020-12-22 13:35:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:35:07,313 INFO L93 Difference]: Finished difference Result 57270 states and 78231 transitions. [2020-12-22 13:35:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:35:07,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-12-22 13:35:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:35:07,398 INFO L225 Difference]: With dead ends: 57270 [2020-12-22 13:35:07,399 INFO L226 Difference]: Without dead ends: 27509 [2020-12-22 13:35:07,465 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 13:35:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27509 states. [2020-12-22 13:35:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27509 to 27509. [2020-12-22 13:35:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27509 states. [2020-12-22 13:35:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27509 states to 27509 states and 36525 transitions. [2020-12-22 13:35:08,517 INFO L78 Accepts]: Start accepts. Automaton has 27509 states and 36525 transitions. Word has length 46 [2020-12-22 13:35:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:35:08,517 INFO L481 AbstractCegarLoop]: Abstraction has 27509 states and 36525 transitions. [2020-12-22 13:35:08,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:35:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 27509 states and 36525 transitions. [2020-12-22 13:35:08,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 13:35:08,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:35:08,524 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] [2020-12-22 13:35:08,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:35:08,525 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:35:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:35:08,525 INFO L82 PathProgramCache]: Analyzing trace with hash -725323443, now seen corresponding path program 1 times [2020-12-22 13:35:08,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:35:08,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931083516] [2020-12-22 13:35:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:35:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:35:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:35:09,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931083516] [2020-12-22 13:35:09,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:35:09,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:35:09,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13510210] [2020-12-22 13:35:09,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:35:09,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:35:09,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:35:09,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:35:09,172 INFO L87 Difference]: Start difference. First operand 27509 states and 36525 transitions. Second operand 3 states. [2020-12-22 13:35:10,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:35:10,939 INFO L93 Difference]: Finished difference Result 28921 states and 38543 transitions. [2020-12-22 13:35:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:35:10,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-12-22 13:35:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:35:11,016 INFO L225 Difference]: With dead ends: 28921 [2020-12-22 13:35:11,016 INFO L226 Difference]: Without dead ends: 28911 [2020-12-22 13:35:11,027 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 13:35:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28911 states. [2020-12-22 13:35:11,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28911 to 27499. [2020-12-22 13:35:11,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27499 states. [2020-12-22 13:35:12,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27499 states to 27499 states and 36512 transitions. [2020-12-22 13:35:12,033 INFO L78 Accepts]: Start accepts. Automaton has 27499 states and 36512 transitions. Word has length 46 [2020-12-22 13:35:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:35:12,036 INFO L481 AbstractCegarLoop]: Abstraction has 27499 states and 36512 transitions. [2020-12-22 13:35:12,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:35:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 27499 states and 36512 transitions. [2020-12-22 13:35:12,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 13:35:12,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:35:12,048 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] [2020-12-22 13:35:12,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:35:12,049 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:35:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:35:12,049 INFO L82 PathProgramCache]: Analyzing trace with hash -97308661, now seen corresponding path program 1 times [2020-12-22 13:35:12,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:35:12,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323700689] [2020-12-22 13:35:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:35:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:35:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:35:12,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323700689] [2020-12-22 13:35:12,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:35:12,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:35:12,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98476136] [2020-12-22 13:35:12,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:35:12,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:35:12,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:35:12,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:35:12,770 INFO L87 Difference]: Start difference. First operand 27499 states and 36512 transitions. Second operand 3 states. [2020-12-22 13:35:15,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:35:15,043 INFO L93 Difference]: Finished difference Result 78749 states and 104565 transitions. [2020-12-22 13:35:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:35:15,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 13:35:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:35:15,164 INFO L225 Difference]: With dead ends: 78749 [2020-12-22 13:35:15,165 INFO L226 Difference]: Without dead ends: 51281 [2020-12-22 13:35:15,244 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 13:35:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51281 states. [2020-12-22 13:35:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51281 to 51279. [2020-12-22 13:35:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51279 states. [2020-12-22 13:35:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51279 states to 51279 states and 68087 transitions. [2020-12-22 13:35:17,202 INFO L78 Accepts]: Start accepts. Automaton has 51279 states and 68087 transitions. Word has length 58 [2020-12-22 13:35:17,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:35:17,202 INFO L481 AbstractCegarLoop]: Abstraction has 51279 states and 68087 transitions. [2020-12-22 13:35:17,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:35:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 51279 states and 68087 transitions. [2020-12-22 13:35:17,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 13:35:17,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:35:17,242 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:35:17,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:35:17,243 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:35:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:35:17,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1471118677, now seen corresponding path program 1 times [2020-12-22 13:35:17,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:35:17,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114966579] [2020-12-22 13:35:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:35:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:35:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:35:17,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114966579] [2020-12-22 13:35:17,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:35:17,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:35:17,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138902565] [2020-12-22 13:35:17,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:35:17,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:35:17,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:35:17,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:35:17,859 INFO L87 Difference]: Start difference. First operand 51279 states and 68087 transitions. Second operand 3 states. [2020-12-22 13:35:22,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:35:22,073 INFO L93 Difference]: Finished difference Result 126331 states and 167755 transitions. [2020-12-22 13:35:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:35:22,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 13:35:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:35:22,250 INFO L225 Difference]: With dead ends: 126331 [2020-12-22 13:35:22,250 INFO L226 Difference]: Without dead ends: 75083 [2020-12-22 13:35:22,320 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 13:35:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75083 states. [2020-12-22 13:35:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75083 to 75081. [2020-12-22 13:35:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75081 states. [2020-12-22 13:35:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75081 states to 75081 states and 99692 transitions. [2020-12-22 13:35:25,361 INFO L78 Accepts]: Start accepts. Automaton has 75081 states and 99692 transitions. Word has length 82 [2020-12-22 13:35:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:35:25,361 INFO L481 AbstractCegarLoop]: Abstraction has 75081 states and 99692 transitions. [2020-12-22 13:35:25,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:35:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 75081 states and 99692 transitions. [2020-12-22 13:35:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 13:35:25,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:35:25,405 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] [2020-12-22 13:35:25,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:35:25,407 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:35:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:35:25,407 INFO L82 PathProgramCache]: Analyzing trace with hash 2094218807, now seen corresponding path program 1 times [2020-12-22 13:35:25,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:35:25,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080467438] [2020-12-22 13:35:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:35:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:35:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:35:25,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080467438] [2020-12-22 13:35:25,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:35:25,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:35:25,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206000172] [2020-12-22 13:35:25,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:35:25,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:35:25,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:35:25,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:35:25,990 INFO L87 Difference]: Start difference. First operand 75081 states and 99692 transitions. Second operand 4 states. [2020-12-22 13:35:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:35:31,119 INFO L93 Difference]: Finished difference Result 175031 states and 232437 transitions. [2020-12-22 13:35:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:35:31,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-22 13:35:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:35:31,335 INFO L225 Difference]: With dead ends: 175031 [2020-12-22 13:35:31,335 INFO L226 Difference]: Without dead ends: 99981 [2020-12-22 13:35:31,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:35:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99981 states. [2020-12-22 13:35:33,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99981 to 75085. [2020-12-22 13:35:33,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75085 states. [2020-12-22 13:35:34,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75085 states to 75085 states and 99696 transitions. [2020-12-22 13:35:34,001 INFO L78 Accepts]: Start accepts. Automaton has 75085 states and 99696 transitions. Word has length 90 [2020-12-22 13:35:34,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:35:34,001 INFO L481 AbstractCegarLoop]: Abstraction has 75085 states and 99696 transitions. [2020-12-22 13:35:34,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:35:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 75085 states and 99696 transitions. [2020-12-22 13:35:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 13:35:34,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:35:34,035 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] [2020-12-22 13:35:34,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:35:34,035 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:35:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:35:34,036 INFO L82 PathProgramCache]: Analyzing trace with hash 284546902, now seen corresponding path program 1 times [2020-12-22 13:35:34,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:35:34,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252252037] [2020-12-22 13:35:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:35:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:35:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:35:34,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252252037] [2020-12-22 13:35:34,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487642770] [2020-12-22 13:35:34,849 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 13:35:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:35:39,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 6739 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:35:39,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:35:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:35:39,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:35:39,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 13:35:39,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957465666] [2020-12-22 13:35:39,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:35:39,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:35:39,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:35:39,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:35:39,827 INFO L87 Difference]: Start difference. First operand 75085 states and 99696 transitions. Second operand 3 states. [2020-12-22 13:35:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:35:43,678 INFO L93 Difference]: Finished difference Result 224877 states and 298605 transitions. [2020-12-22 13:35:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:35:43,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-22 13:35:43,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:35:43,998 INFO L225 Difference]: With dead ends: 224877 [2020-12-22 13:35:43,998 INFO L226 Difference]: Without dead ends: 149823 [2020-12-22 13:35:44,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 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 13:35:44,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149823 states. [2020-12-22 13:35:47,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149823 to 75087. [2020-12-22 13:35:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75087 states. [2020-12-22 13:35:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75087 states to 75087 states and 99698 transitions. [2020-12-22 13:35:47,304 INFO L78 Accepts]: Start accepts. Automaton has 75087 states and 99698 transitions. Word has length 104 [2020-12-22 13:35:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:35:47,305 INFO L481 AbstractCegarLoop]: Abstraction has 75087 states and 99698 transitions. [2020-12-22 13:35:47,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:35:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 75087 states and 99698 transitions. [2020-12-22 13:35:47,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 13:35:47,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:35:47,332 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] [2020-12-22 13:35:47,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-22 13:35:47,534 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:35:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:35:47,537 INFO L82 PathProgramCache]: Analyzing trace with hash 261914648, now seen corresponding path program 1 times [2020-12-22 13:35:47,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:35:47,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520576092] [2020-12-22 13:35:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:35:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:35:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 13:35:49,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520576092] [2020-12-22 13:35:49,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375514068] [2020-12-22 13:35:49,372 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