/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-4.2-rc1/linux-4.2-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 15:09:21,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:09:21,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:09:21,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:09:21,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:09:21,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:09:21,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:09:21,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:09:21,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:09:21,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:09:21,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:09:21,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:09:21,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:09:21,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:09:21,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:09:21,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:09:21,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:09:21,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:09:21,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:09:21,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:09:21,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:09:22,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:09:22,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:09:22,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:09:22,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 15:09:22,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 15:09:22,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 15:09:22,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 15:09:22,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 15:09:22,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 15:09:22,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:09:22,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:09:22,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:09:22,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:09:22,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:09:22,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:09:22,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:09:22,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:09:22,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:09:22,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:09:22,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:09:22,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:09:22,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:09:22,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:09:22,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:09:22,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:09:22,051 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:09:22,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:09:22,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:09:22,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:09:22,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:09:22,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:09:22,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:09:22,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:09:22,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:09:22,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:09:22,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:09:22,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:09:22,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:09:22,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:09:22,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:09:22,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:09:22,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:09:22,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:09:22,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:09:22,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:09:22,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:09:22,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:09:22,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:09:22,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:09:22,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:09:22,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:09:22,516 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:09:22,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2020-12-22 15:09:22,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9bce2f40/75e9888eaa1a43efac0dc104e9e85478/FLAG2b48b7c28 [2020-12-22 15:09:23,798 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:09:23,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2020-12-22 15:09:23,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9bce2f40/75e9888eaa1a43efac0dc104e9e85478/FLAG2b48b7c28 [2020-12-22 15:09:24,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9bce2f40/75e9888eaa1a43efac0dc104e9e85478 [2020-12-22 15:09:24,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:09:24,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:09:24,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:09:24,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:09:24,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:09:24,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:09:24" (1/1) ... [2020-12-22 15:09:24,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b83319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:24, skipping insertion in model container [2020-12-22 15:09:24,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:09:24" (1/1) ... [2020-12-22 15:09:24,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:09:24,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:09:27,092 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[319471,319484] [2020-12-22 15:09:27,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:09:27,200 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:09:27,831 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[319471,319484] [2020-12-22 15:09:27,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:09:28,515 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:09:28,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28 WrapperNode [2020-12-22 15:09:28,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:09:28,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:09:28,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:09:28,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:09:28,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (1/1) ... [2020-12-22 15:09:28,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (1/1) ... [2020-12-22 15:09:29,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:09:29,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:09:29,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:09:29,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:09:29,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (1/1) ... [2020-12-22 15:09:29,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (1/1) ... [2020-12-22 15:09:29,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (1/1) ... [2020-12-22 15:09:29,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (1/1) ... [2020-12-22 15:09:29,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (1/1) ... [2020-12-22 15:09:30,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (1/1) ... [2020-12-22 15:09:30,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (1/1) ... [2020-12-22 15:09:30,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:09:30,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:09:30,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:09:30,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:09:30,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (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 15:09:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:09:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:09:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:09:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:09:30,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:09:30,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:09:30,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:09:30,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:09:30,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:09:30,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:09:30,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:09:30,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2020-12-22 15:09:30,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:09:30,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:09:30,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:09:30,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:09:53,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:09:53,568 INFO L299 CfgBuilder]: Removed 3283 assume(true) statements. [2020-12-22 15:09:53,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:09:53 BoogieIcfgContainer [2020-12-22 15:09:53,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:09:53,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:09:53,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:09:53,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:09:53,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:09:24" (1/3) ... [2020-12-22 15:09:53,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666bde24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:09:53, skipping insertion in model container [2020-12-22 15:09:53,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:09:28" (2/3) ... [2020-12-22 15:09:53,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666bde24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:09:53, skipping insertion in model container [2020-12-22 15:09:53,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:09:53" (3/3) ... [2020-12-22 15:09:53,582 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2020-12-22 15:09:53,589 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:09:53,596 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-12-22 15:09:53,615 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-12-22 15:09:53,652 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:09:53,652 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:09:53,652 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:09:53,652 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:09:53,652 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:09:53,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:09:53,653 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:09:53,653 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:09:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states. [2020-12-22 15:09:53,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 15:09:53,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:09:53,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:53,739 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 15:09:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:09:53,745 INFO L82 PathProgramCache]: Analyzing trace with hash 987291868, now seen corresponding path program 1 times [2020-12-22 15:09:53,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:09:53,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099237923] [2020-12-22 15:09:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:09:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:09:54,604 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 15:09:54,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099237923] [2020-12-22 15:09:54,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:09:54,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:09:54,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075935231] [2020-12-22 15:09:54,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 15:09:54,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:09:54,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 15:09:54,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 15:09:54,630 INFO L87 Difference]: Start difference. First operand 2925 states. Second operand 2 states. [2020-12-22 15:09:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:09:54,815 INFO L93 Difference]: Finished difference Result 5846 states and 7963 transitions. [2020-12-22 15:09:54,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 15:09:54,817 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 131 [2020-12-22 15:09:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:09:54,849 INFO L225 Difference]: With dead ends: 5846 [2020-12-22 15:09:54,850 INFO L226 Difference]: Without dead ends: 2870 [2020-12-22 15:09:54,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 15:09:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2020-12-22 15:09:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2020-12-22 15:09:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2870 states. [2020-12-22 15:09:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3790 transitions. [2020-12-22 15:09:55,034 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3790 transitions. Word has length 131 [2020-12-22 15:09:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:09:55,035 INFO L481 AbstractCegarLoop]: Abstraction has 2870 states and 3790 transitions. [2020-12-22 15:09:55,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 15:09:55,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3790 transitions. [2020-12-22 15:09:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 15:09:55,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:09:55,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:55,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:09:55,050 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 15:09:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:09:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1408896448, now seen corresponding path program 1 times [2020-12-22 15:09:55,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:09:55,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159952587] [2020-12-22 15:09:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:09:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:09:55,613 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 15:09:55,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159952587] [2020-12-22 15:09:55,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:09:55,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:09:55,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586115652] [2020-12-22 15:09:55,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:09:55,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:09:55,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:09:55,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:09:55,618 INFO L87 Difference]: Start difference. First operand 2870 states and 3790 transitions. Second operand 3 states. [2020-12-22 15:09:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:09:56,317 INFO L93 Difference]: Finished difference Result 7596 states and 10064 transitions. [2020-12-22 15:09:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:09:56,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-12-22 15:09:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:09:56,342 INFO L225 Difference]: With dead ends: 7596 [2020-12-22 15:09:56,343 INFO L226 Difference]: Without dead ends: 4821 [2020-12-22 15:09:56,353 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 15:09:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2020-12-22 15:09:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4631. [2020-12-22 15:09:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4631 states. [2020-12-22 15:09:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4631 states to 4631 states and 6166 transitions. [2020-12-22 15:09:56,515 INFO L78 Accepts]: Start accepts. Automaton has 4631 states and 6166 transitions. Word has length 131 [2020-12-22 15:09:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:09:56,517 INFO L481 AbstractCegarLoop]: Abstraction has 4631 states and 6166 transitions. [2020-12-22 15:09:56,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:09:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4631 states and 6166 transitions. [2020-12-22 15:09:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 15:09:56,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:09:56,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:56,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:09:56,523 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 15:09:56,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:09:56,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1891957568, now seen corresponding path program 1 times [2020-12-22 15:09:56,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:09:56,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159506285] [2020-12-22 15:09:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:09:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:09:56,986 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 15:09:56,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159506285] [2020-12-22 15:09:56,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:09:56,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:09:56,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977674067] [2020-12-22 15:09:56,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:09:56,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:09:56,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:09:56,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:09:56,997 INFO L87 Difference]: Start difference. First operand 4631 states and 6166 transitions. Second operand 3 states. [2020-12-22 15:09:57,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:09:57,351 INFO L93 Difference]: Finished difference Result 10230 states and 13707 transitions. [2020-12-22 15:09:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:09:57,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-22 15:09:57,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:09:57,389 INFO L225 Difference]: With dead ends: 10230 [2020-12-22 15:09:57,389 INFO L226 Difference]: Without dead ends: 5694 [2020-12-22 15:09:57,398 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 15:09:57,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2020-12-22 15:09:57,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5672. [2020-12-22 15:09:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5672 states. [2020-12-22 15:09:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5672 states to 5672 states and 7623 transitions. [2020-12-22 15:09:57,579 INFO L78 Accepts]: Start accepts. Automaton has 5672 states and 7623 transitions. Word has length 143 [2020-12-22 15:09:57,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:09:57,582 INFO L481 AbstractCegarLoop]: Abstraction has 5672 states and 7623 transitions. [2020-12-22 15:09:57,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:09:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5672 states and 7623 transitions. [2020-12-22 15:09:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-22 15:09:57,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:09:57,590 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:57,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:09:57,590 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 15:09:57,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:09:57,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1069620689, now seen corresponding path program 1 times [2020-12-22 15:09:57,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:09:57,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735473836] [2020-12-22 15:09:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:09:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:09:58,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:09:58,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735473836] [2020-12-22 15:09:58,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:09:58,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:09:58,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989145047] [2020-12-22 15:09:58,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:09:58,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:09:58,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:09:58,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:09:58,275 INFO L87 Difference]: Start difference. First operand 5672 states and 7623 transitions. Second operand 4 states. [2020-12-22 15:10:00,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:00,686 INFO L93 Difference]: Finished difference Result 11261 states and 15158 transitions. [2020-12-22 15:10:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:10:00,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-12-22 15:10:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:00,718 INFO L225 Difference]: With dead ends: 11261 [2020-12-22 15:10:00,718 INFO L226 Difference]: Without dead ends: 5672 [2020-12-22 15:10:00,729 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 15:10:00,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2020-12-22 15:10:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 5672. [2020-12-22 15:10:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5672 states. [2020-12-22 15:10:00,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5672 states to 5672 states and 7615 transitions. [2020-12-22 15:10:00,954 INFO L78 Accepts]: Start accepts. Automaton has 5672 states and 7615 transitions. Word has length 186 [2020-12-22 15:10:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:00,956 INFO L481 AbstractCegarLoop]: Abstraction has 5672 states and 7615 transitions. [2020-12-22 15:10:00,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:10:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5672 states and 7615 transitions. [2020-12-22 15:10:00,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-22 15:10:00,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:00,964 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:00,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:10:00,965 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 15:10:00,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:00,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1320406279, now seen corresponding path program 1 times [2020-12-22 15:10:00,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:00,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420514635] [2020-12-22 15:10:00,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 15:10:01,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420514635] [2020-12-22 15:10:01,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:10:01,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:10:01,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900034148] [2020-12-22 15:10:01,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:10:01,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:10:01,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:10:01,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:10:01,859 INFO L87 Difference]: Start difference. First operand 5672 states and 7615 transitions. Second operand 3 states. [2020-12-22 15:10:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:02,271 INFO L93 Difference]: Finished difference Result 5672 states and 7615 transitions. [2020-12-22 15:10:02,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:10:02,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-12-22 15:10:02,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:02,301 INFO L225 Difference]: With dead ends: 5672 [2020-12-22 15:10:02,301 INFO L226 Difference]: Without dead ends: 5654 [2020-12-22 15:10:02,305 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 15:10:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2020-12-22 15:10:02,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5654. [2020-12-22 15:10:02,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5654 states. [2020-12-22 15:10:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 7588 transitions. [2020-12-22 15:10:02,593 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 7588 transitions. Word has length 193 [2020-12-22 15:10:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:02,594 INFO L481 AbstractCegarLoop]: Abstraction has 5654 states and 7588 transitions. [2020-12-22 15:10:02,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:10:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 7588 transitions. [2020-12-22 15:10:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-12-22 15:10:02,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:02,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:02,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:10:02,606 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 15:10:02,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:02,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1667876894, now seen corresponding path program 1 times [2020-12-22 15:10:02,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:02,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804737947] [2020-12-22 15:10:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 15:10:03,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804737947] [2020-12-22 15:10:03,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:10:03,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:10:03,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238077089] [2020-12-22 15:10:03,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:10:03,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:10:03,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:10:03,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:10:03,088 INFO L87 Difference]: Start difference. First operand 5654 states and 7588 transitions. Second operand 3 states. [2020-12-22 15:10:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:05,950 INFO L93 Difference]: Finished difference Result 13377 states and 18028 transitions. [2020-12-22 15:10:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:10:05,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-12-22 15:10:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:05,999 INFO L225 Difference]: With dead ends: 13377 [2020-12-22 15:10:05,999 INFO L226 Difference]: Without dead ends: 7818 [2020-12-22 15:10:06,012 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 15:10:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2020-12-22 15:10:06,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 7646. [2020-12-22 15:10:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7646 states. [2020-12-22 15:10:06,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7646 states to 7646 states and 10284 transitions. [2020-12-22 15:10:06,264 INFO L78 Accepts]: Start accepts. Automaton has 7646 states and 10284 transitions. Word has length 211 [2020-12-22 15:10:06,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:06,265 INFO L481 AbstractCegarLoop]: Abstraction has 7646 states and 10284 transitions. [2020-12-22 15:10:06,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:10:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7646 states and 10284 transitions. [2020-12-22 15:10:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-12-22 15:10:06,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:06,282 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:06,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 15:10:06,283 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 15:10:06,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:06,284 INFO L82 PathProgramCache]: Analyzing trace with hash 915690416, now seen corresponding path program 1 times [2020-12-22 15:10:06,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:06,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038848035] [2020-12-22 15:10:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 15:10:07,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038848035] [2020-12-22 15:10:07,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:10:07,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 15:10:07,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556131954] [2020-12-22 15:10:07,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 15:10:07,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:10:07,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 15:10:07,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:10:07,716 INFO L87 Difference]: Start difference. First operand 7646 states and 10284 transitions. Second operand 8 states. [2020-12-22 15:10:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:10,822 INFO L93 Difference]: Finished difference Result 33670 states and 45517 transitions. [2020-12-22 15:10:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 15:10:10,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2020-12-22 15:10:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:10,889 INFO L225 Difference]: With dead ends: 33670 [2020-12-22 15:10:10,889 INFO L226 Difference]: Without dead ends: 26119 [2020-12-22 15:10:10,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-12-22 15:10:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26119 states. [2020-12-22 15:10:11,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26119 to 7658. [2020-12-22 15:10:11,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7658 states. [2020-12-22 15:10:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7658 states to 7658 states and 10296 transitions. [2020-12-22 15:10:11,822 INFO L78 Accepts]: Start accepts. Automaton has 7658 states and 10296 transitions. Word has length 231 [2020-12-22 15:10:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:11,822 INFO L481 AbstractCegarLoop]: Abstraction has 7658 states and 10296 transitions. [2020-12-22 15:10:11,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 15:10:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 7658 states and 10296 transitions. [2020-12-22 15:10:11,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-22 15:10:11,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:11,838 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:11,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 15:10:11,839 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 15:10:11,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:11,840 INFO L82 PathProgramCache]: Analyzing trace with hash 18451097, now seen corresponding path program 1 times [2020-12-22 15:10:11,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:11,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048216400] [2020-12-22 15:10:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 15:10:12,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048216400] [2020-12-22 15:10:12,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:10:12,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 15:10:12,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017099043] [2020-12-22 15:10:12,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:10:12,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:10:12,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:10:12,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:10:12,415 INFO L87 Difference]: Start difference. First operand 7658 states and 10296 transitions. Second operand 5 states. [2020-12-22 15:10:15,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:15,393 INFO L93 Difference]: Finished difference Result 29432 states and 39787 transitions. [2020-12-22 15:10:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:10:15,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-12-22 15:10:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:15,453 INFO L225 Difference]: With dead ends: 29432 [2020-12-22 15:10:15,453 INFO L226 Difference]: Without dead ends: 21869 [2020-12-22 15:10:15,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:10:15,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21869 states. [2020-12-22 15:10:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21869 to 7676. [2020-12-22 15:10:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7676 states. [2020-12-22 15:10:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7676 states to 7676 states and 10314 transitions. [2020-12-22 15:10:16,366 INFO L78 Accepts]: Start accepts. Automaton has 7676 states and 10314 transitions. Word has length 233 [2020-12-22 15:10:16,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:16,367 INFO L481 AbstractCegarLoop]: Abstraction has 7676 states and 10314 transitions. [2020-12-22 15:10:16,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:10:16,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7676 states and 10314 transitions. [2020-12-22 15:10:16,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-12-22 15:10:16,381 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:16,382 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:16,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 15:10:16,382 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 15:10:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1276818332, now seen corresponding path program 1 times [2020-12-22 15:10:16,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:16,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44677250] [2020-12-22 15:10:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 15:10:17,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44677250] [2020-12-22 15:10:17,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:10:17,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 15:10:17,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381015136] [2020-12-22 15:10:17,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:10:17,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:10:17,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:10:17,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:10:17,101 INFO L87 Difference]: Start difference. First operand 7676 states and 10314 transitions. Second operand 5 states. [2020-12-22 15:10:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:20,838 INFO L93 Difference]: Finished difference Result 36804 states and 49746 transitions. [2020-12-22 15:10:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 15:10:20,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-12-22 15:10:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:20,908 INFO L225 Difference]: With dead ends: 36804 [2020-12-22 15:10:20,908 INFO L226 Difference]: Without dead ends: 29223 [2020-12-22 15:10:20,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:10:20,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29223 states. [2020-12-22 15:10:22,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29223 to 7685. [2020-12-22 15:10:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7685 states. [2020-12-22 15:10:22,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 10323 transitions. [2020-12-22 15:10:22,042 INFO L78 Accepts]: Start accepts. Automaton has 7685 states and 10323 transitions. Word has length 243 [2020-12-22 15:10:22,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:22,042 INFO L481 AbstractCegarLoop]: Abstraction has 7685 states and 10323 transitions. [2020-12-22 15:10:22,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:10:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7685 states and 10323 transitions. [2020-12-22 15:10:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-12-22 15:10:22,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:22,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:22,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 15:10:22,060 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 15:10:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:22,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1298900732, now seen corresponding path program 1 times [2020-12-22 15:10:22,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:22,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135843808] [2020-12-22 15:10:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 15:10:22,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135843808] [2020-12-22 15:10:22,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:10:22,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 15:10:22,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508480238] [2020-12-22 15:10:22,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 15:10:22,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:10:22,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 15:10:22,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:10:22,823 INFO L87 Difference]: Start difference. First operand 7685 states and 10323 transitions. Second operand 6 states. [2020-12-22 15:10:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:27,451 INFO L93 Difference]: Finished difference Result 51201 states and 69232 transitions. [2020-12-22 15:10:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 15:10:27,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2020-12-22 15:10:27,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:27,558 INFO L225 Difference]: With dead ends: 51201 [2020-12-22 15:10:27,558 INFO L226 Difference]: Without dead ends: 43611 [2020-12-22 15:10:27,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 15:10:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43611 states. [2020-12-22 15:10:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43611 to 7690. [2020-12-22 15:10:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7690 states. [2020-12-22 15:10:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7690 states to 7690 states and 10328 transitions. [2020-12-22 15:10:28,676 INFO L78 Accepts]: Start accepts. Automaton has 7690 states and 10328 transitions. Word has length 249 [2020-12-22 15:10:28,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:28,677 INFO L481 AbstractCegarLoop]: Abstraction has 7690 states and 10328 transitions. [2020-12-22 15:10:28,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 15:10:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 7690 states and 10328 transitions. [2020-12-22 15:10:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-12-22 15:10:28,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:28,689 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:28,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 15:10:28,690 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 15:10:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:28,690 INFO L82 PathProgramCache]: Analyzing trace with hash 227179663, now seen corresponding path program 1 times [2020-12-22 15:10:28,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:28,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153780284] [2020-12-22 15:10:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 15:10:29,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153780284] [2020-12-22 15:10:29,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:10:29,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 15:10:29,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90942816] [2020-12-22 15:10:29,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 15:10:29,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:10:29,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 15:10:29,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 15:10:29,641 INFO L87 Difference]: Start difference. First operand 7690 states and 10328 transitions. Second operand 9 states. [2020-12-22 15:10:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:35,413 INFO L93 Difference]: Finished difference Result 38487 states and 51971 transitions. [2020-12-22 15:10:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 15:10:35,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 250 [2020-12-22 15:10:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:35,475 INFO L225 Difference]: With dead ends: 38487 [2020-12-22 15:10:35,475 INFO L226 Difference]: Without dead ends: 30892 [2020-12-22 15:10:35,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2020-12-22 15:10:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30892 states. [2020-12-22 15:10:36,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30892 to 7690. [2020-12-22 15:10:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7690 states. [2020-12-22 15:10:36,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7690 states to 7690 states and 10328 transitions. [2020-12-22 15:10:36,783 INFO L78 Accepts]: Start accepts. Automaton has 7690 states and 10328 transitions. Word has length 250 [2020-12-22 15:10:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:36,784 INFO L481 AbstractCegarLoop]: Abstraction has 7690 states and 10328 transitions. [2020-12-22 15:10:36,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 15:10:36,784 INFO L276 IsEmpty]: Start isEmpty. Operand 7690 states and 10328 transitions. [2020-12-22 15:10:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-12-22 15:10:36,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:36,797 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:36,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 15:10:36,798 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 15:10:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:36,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1436022172, now seen corresponding path program 1 times [2020-12-22 15:10:36,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:36,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654309994] [2020-12-22 15:10:36,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 15:10:37,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654309994] [2020-12-22 15:10:37,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:10:37,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 15:10:37,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366989786] [2020-12-22 15:10:37,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 15:10:37,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:10:37,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 15:10:37,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:10:37,514 INFO L87 Difference]: Start difference. First operand 7690 states and 10328 transitions. Second operand 6 states. [2020-12-22 15:10:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:41,355 INFO L93 Difference]: Finished difference Result 30422 states and 41005 transitions. [2020-12-22 15:10:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 15:10:41,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 255 [2020-12-22 15:10:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:41,388 INFO L225 Difference]: With dead ends: 30422 [2020-12-22 15:10:41,388 INFO L226 Difference]: Without dead ends: 22827 [2020-12-22 15:10:41,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 15:10:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22827 states. [2020-12-22 15:10:42,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22827 to 7695. [2020-12-22 15:10:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7695 states. [2020-12-22 15:10:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7695 states to 7695 states and 10333 transitions. [2020-12-22 15:10:42,458 INFO L78 Accepts]: Start accepts. Automaton has 7695 states and 10333 transitions. Word has length 255 [2020-12-22 15:10:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:42,459 INFO L481 AbstractCegarLoop]: Abstraction has 7695 states and 10333 transitions. [2020-12-22 15:10:42,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 15:10:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 7695 states and 10333 transitions. [2020-12-22 15:10:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-12-22 15:10:42,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:42,468 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:42,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 15:10:42,469 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 15:10:42,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:42,469 INFO L82 PathProgramCache]: Analyzing trace with hash 668678782, now seen corresponding path program 1 times [2020-12-22 15:10:42,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:42,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061117860] [2020-12-22 15:10:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 15:10:42,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061117860] [2020-12-22 15:10:42,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:10:42,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:10:42,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789002916] [2020-12-22 15:10:42,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:10:42,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:10:42,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:10:42,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:10:42,954 INFO L87 Difference]: Start difference. First operand 7695 states and 10333 transitions. Second operand 4 states. [2020-12-22 15:10:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:45,676 INFO L93 Difference]: Finished difference Result 23847 states and 32125 transitions. [2020-12-22 15:10:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:10:45,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2020-12-22 15:10:45,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:45,706 INFO L225 Difference]: With dead ends: 23847 [2020-12-22 15:10:45,708 INFO L226 Difference]: Without dead ends: 16247 [2020-12-22 15:10:45,723 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 15:10:45,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16247 states. [2020-12-22 15:10:47,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16247 to 7713. [2020-12-22 15:10:47,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7713 states. [2020-12-22 15:10:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 10351 transitions. [2020-12-22 15:10:47,197 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 10351 transitions. Word has length 258 [2020-12-22 15:10:47,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:47,199 INFO L481 AbstractCegarLoop]: Abstraction has 7713 states and 10351 transitions. [2020-12-22 15:10:47,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:10:47,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 10351 transitions. [2020-12-22 15:10:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-12-22 15:10:47,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:47,210 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:47,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 15:10:47,210 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 15:10:47,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:47,211 INFO L82 PathProgramCache]: Analyzing trace with hash -122917204, now seen corresponding path program 1 times [2020-12-22 15:10:47,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:47,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158950481] [2020-12-22 15:10:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-12-22 15:10:48,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158950481] [2020-12-22 15:10:48,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:10:48,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:10:48,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474482215] [2020-12-22 15:10:48,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:10:48,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:10:48,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:10:48,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:10:48,542 INFO L87 Difference]: Start difference. First operand 7713 states and 10351 transitions. Second operand 3 states. [2020-12-22 15:10:49,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:10:49,736 INFO L93 Difference]: Finished difference Result 15385 states and 20687 transitions. [2020-12-22 15:10:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:10:49,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2020-12-22 15:10:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:10:49,749 INFO L225 Difference]: With dead ends: 15385 [2020-12-22 15:10:49,749 INFO L226 Difference]: Without dead ends: 7740 [2020-12-22 15:10:49,759 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 15:10:49,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7740 states. [2020-12-22 15:10:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7740 to 7740. [2020-12-22 15:10:50,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7740 states. [2020-12-22 15:10:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7740 states to 7740 states and 10378 transitions. [2020-12-22 15:10:50,653 INFO L78 Accepts]: Start accepts. Automaton has 7740 states and 10378 transitions. Word has length 261 [2020-12-22 15:10:50,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:10:50,654 INFO L481 AbstractCegarLoop]: Abstraction has 7740 states and 10378 transitions. [2020-12-22 15:10:50,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:10:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 7740 states and 10378 transitions. [2020-12-22 15:10:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-12-22 15:10:50,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:10:50,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:50,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 15:10:50,665 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 15:10:50,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:10:50,665 INFO L82 PathProgramCache]: Analyzing trace with hash 796035146, now seen corresponding path program 1 times [2020-12-22 15:10:50,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:10:50,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741645733] [2020-12-22 15:10:50,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:10:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:10:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-22 15:10:52,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741645733] [2020-12-22 15:10:52,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86160608] [2020-12-22 15:10:52,412 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 15:12:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:37,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 4409 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 15:12:37,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:12:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-22 15:12:37,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:12:37,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 15:12:37,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522296208] [2020-12-22 15:12:37,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 15:12:37,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:12:37,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 15:12:37,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:12:37,666 INFO L87 Difference]: Start difference. First operand 7740 states and 10378 transitions. Second operand 6 states. [2020-12-22 15:12:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:12:40,159 INFO L93 Difference]: Finished difference Result 15443 states and 20750 transitions. [2020-12-22 15:12:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 15:12:40,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2020-12-22 15:12:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:12:40,192 INFO L225 Difference]: With dead ends: 15443 [2020-12-22 15:12:40,192 INFO L226 Difference]: Without dead ends: 7772 [2020-12-22 15:12:40,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 15:12:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7772 states. [2020-12-22 15:12:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7772 to 7772. [2020-12-22 15:12:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7772 states. [2020-12-22 15:12:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7772 states to 7772 states and 10410 transitions. [2020-12-22 15:12:41,720 INFO L78 Accepts]: Start accepts. Automaton has 7772 states and 10410 transitions. Word has length 270 [2020-12-22 15:12:41,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:12:41,720 INFO L481 AbstractCegarLoop]: Abstraction has 7772 states and 10410 transitions. [2020-12-22 15:12:41,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 15:12:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 7772 states and 10410 transitions. [2020-12-22 15:12:41,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-12-22 15:12:41,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:12:41,738 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:41,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 15:12:41,940 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 15:12:41,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:12:41,944 INFO L82 PathProgramCache]: Analyzing trace with hash -697985024, now seen corresponding path program 2 times [2020-12-22 15:12:41,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:12:41,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518332124] [2020-12-22 15:12:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:12:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-12-22 15:12:43,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518332124] [2020-12-22 15:12:43,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118535859] [2020-12-22 15:12:43,536 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 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