/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-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:58:11,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:58:11,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:58:11,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:58:11,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:58:11,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:58:11,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:58:11,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:58:11,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:58:11,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:58:11,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:58:11,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:58:11,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:58:11,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:58:11,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:58:11,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:58:11,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:58:11,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:58:11,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:58:11,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:58:11,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:58:11,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:58:11,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:58:11,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:58:11,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:58:11,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:58:11,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:58:11,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:58:11,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:58:11,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:58:11,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:58:11,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:58:11,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:58:11,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:58:11,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:58:11,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:58:11,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:58:11,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:58:11,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:58:11,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:58:11,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:58:12,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:58:12,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:58:12,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:58:12,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:58:12,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:58:12,062 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:58:12,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:58:12,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:58:12,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:58:12,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:58:12,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:58:12,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:58:12,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:58:12,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:58:12,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:58:12,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:58:12,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:58:12,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:58:12,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:58:12,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:58:12,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:58:12,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:58:12,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:58:12,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:58:12,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:58:12,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:58:12,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:58:12,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:58:12,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:58:12,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:58:12,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:58:12,555 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:58:12,556 INFO L432 ainManager$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-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2020-12-22 13:58:12,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afae415fc/82cea218d1da4c2eb25a46005a5a1fb7/FLAGf0c651011 [2020-12-22 13:58:13,643 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:58:13,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2020-12-22 13:58:13,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afae415fc/82cea218d1da4c2eb25a46005a5a1fb7/FLAGf0c651011 [2020-12-22 13:58:14,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afae415fc/82cea218d1da4c2eb25a46005a5a1fb7 [2020-12-22 13:58:14,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:58:14,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:58:14,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:58:14,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:58:14,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:58:14,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:58:14" (1/1) ... [2020-12-22 13:58:14,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d344e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:14, skipping insertion in model container [2020-12-22 13:58:14,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:58:14" (1/1) ... [2020-12-22 13:58:14,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:58:14,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:58:16,349 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-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i[191080,191093] [2020-12-22 13:58:16,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:58:16,431 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:58:16,819 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-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i[191080,191093] [2020-12-22 13:58:16,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:58:17,150 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:58:17,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17 WrapperNode [2020-12-22 13:58:17,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:58:17,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:58:17,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:58:17,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:58:17,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (1/1) ... [2020-12-22 13:58:17,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (1/1) ... [2020-12-22 13:58:17,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:58:17,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:58:17,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:58:17,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:58:17,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (1/1) ... [2020-12-22 13:58:17,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (1/1) ... [2020-12-22 13:58:17,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (1/1) ... [2020-12-22 13:58:17,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (1/1) ... [2020-12-22 13:58:17,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (1/1) ... [2020-12-22 13:58:18,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (1/1) ... [2020-12-22 13:58:18,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (1/1) ... [2020-12-22 13:58:18,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:58:18,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:58:18,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:58:18,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:58:18,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:58:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_fe_init [2020-12-22 13:58:18,323 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_fe_init [2020-12-22 13:58:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-12-22 13:58:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2020-12-22 13:58:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:58:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:58:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:58:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:58:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:58:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:58:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:58:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_resume [2020-12-22 13:58:18,325 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_resume [2020-12-22 13:58:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:58:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:58:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:58:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:58:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:58:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:58:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 13:58:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 13:58:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:58:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:58:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:58:38,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:58:38,013 INFO L299 CfgBuilder]: Removed 983 assume(true) statements. [2020-12-22 13:58:38,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:58:38 BoogieIcfgContainer [2020-12-22 13:58:38,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:58:38,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:58:38,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:58:38,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:58:38,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:58:14" (1/3) ... [2020-12-22 13:58:38,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3f10e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:58:38, skipping insertion in model container [2020-12-22 13:58:38,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:58:17" (2/3) ... [2020-12-22 13:58:38,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3f10e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:58:38, skipping insertion in model container [2020-12-22 13:58:38,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:58:38" (3/3) ... [2020-12-22 13:58:38,026 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2020-12-22 13:58:38,033 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:58:38,041 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 13:58:38,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 13:58:38,102 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:58:38,102 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:58:38,102 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:58:38,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:58:38,103 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:58:38,103 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:58:38,103 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:58:38,103 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:58:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states. [2020-12-22 13:58:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 13:58:38,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:58:38,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:58:38,155 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:58:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:58:38,162 INFO L82 PathProgramCache]: Analyzing trace with hash 647338655, now seen corresponding path program 1 times [2020-12-22 13:58:38,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:58:38,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319619922] [2020-12-22 13:58:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:58:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:58:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:58:38,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319619922] [2020-12-22 13:58:38,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:58:38,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:58:38,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431056092] [2020-12-22 13:58:38,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:58:38,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:58:38,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:58:38,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:58:38,864 INFO L87 Difference]: Start difference. First operand 1317 states. Second operand 2 states. [2020-12-22 13:58:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:58:39,031 INFO L93 Difference]: Finished difference Result 2630 states and 3783 transitions. [2020-12-22 13:58:39,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:58:39,033 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-12-22 13:58:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:58:39,066 INFO L225 Difference]: With dead ends: 2630 [2020-12-22 13:58:39,067 INFO L226 Difference]: Without dead ends: 1308 [2020-12-22 13:58:39,080 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 13:58:39,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-12-22 13:58:39,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1308. [2020-12-22 13:58:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1308 states. [2020-12-22 13:58:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1837 transitions. [2020-12-22 13:58:39,228 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1837 transitions. Word has length 24 [2020-12-22 13:58:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:58:39,228 INFO L481 AbstractCegarLoop]: Abstraction has 1308 states and 1837 transitions. [2020-12-22 13:58:39,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:58:39,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1837 transitions. [2020-12-22 13:58:39,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 13:58:39,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:58:39,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:58:39,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:58:39,233 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:58:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:58:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash -518307421, now seen corresponding path program 1 times [2020-12-22 13:58:39,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:58:39,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23639269] [2020-12-22 13:58:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:58:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:58:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:58:39,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23639269] [2020-12-22 13:58:39,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:58:39,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:58:39,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199301853] [2020-12-22 13:58:39,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:58:39,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:58:39,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:58:39,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:58:39,545 INFO L87 Difference]: Start difference. First operand 1308 states and 1837 transitions. Second operand 3 states. [2020-12-22 13:58:40,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:58:40,517 INFO L93 Difference]: Finished difference Result 3873 states and 5458 transitions. [2020-12-22 13:58:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:58:40,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 13:58:40,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:58:40,539 INFO L225 Difference]: With dead ends: 3873 [2020-12-22 13:58:40,541 INFO L226 Difference]: Without dead ends: 2579 [2020-12-22 13:58:40,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:58:40,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2020-12-22 13:58:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2567. [2020-12-22 13:58:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2567 states. [2020-12-22 13:58:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 3627 transitions. [2020-12-22 13:58:40,676 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 3627 transitions. Word has length 24 [2020-12-22 13:58:40,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:58:40,676 INFO L481 AbstractCegarLoop]: Abstraction has 2567 states and 3627 transitions. [2020-12-22 13:58:40,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:58:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 3627 transitions. [2020-12-22 13:58:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 13:58:40,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:58:40,680 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] [2020-12-22 13:58:40,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:58:40,681 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:58:40,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:58:40,682 INFO L82 PathProgramCache]: Analyzing trace with hash 31171009, now seen corresponding path program 1 times [2020-12-22 13:58:40,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:58:40,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642677742] [2020-12-22 13:58:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:58:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:58:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:58:40,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642677742] [2020-12-22 13:58:40,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:58:40,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:58:40,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740858706] [2020-12-22 13:58:40,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:58:40,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:58:40,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:58:40,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:58:40,939 INFO L87 Difference]: Start difference. First operand 2567 states and 3627 transitions. Second operand 3 states. [2020-12-22 13:58:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:58:41,206 INFO L93 Difference]: Finished difference Result 7659 states and 10838 transitions. [2020-12-22 13:58:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:58:41,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-12-22 13:58:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:58:41,255 INFO L225 Difference]: With dead ends: 7659 [2020-12-22 13:58:41,255 INFO L226 Difference]: Without dead ends: 5103 [2020-12-22 13:58:41,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:58:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2020-12-22 13:58:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 5085. [2020-12-22 13:58:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5085 states. [2020-12-22 13:58:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 7196 transitions. [2020-12-22 13:58:41,474 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 7196 transitions. Word has length 33 [2020-12-22 13:58:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:58:41,475 INFO L481 AbstractCegarLoop]: Abstraction has 5085 states and 7196 transitions. [2020-12-22 13:58:41,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:58:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 7196 transitions. [2020-12-22 13:58:41,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 13:58:41,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:58:41,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:58:41,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:58:41,487 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:58:41,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:58:41,488 INFO L82 PathProgramCache]: Analyzing trace with hash -922253114, now seen corresponding path program 1 times [2020-12-22 13:58:41,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:58:41,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033659162] [2020-12-22 13:58:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:58:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:58:41,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-12-22 13:58:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:58:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:58:41,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033659162] [2020-12-22 13:58:41,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:58:41,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:58:41,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835924780] [2020-12-22 13:58:41,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:58:41,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:58:41,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:58:41,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:58:41,808 INFO L87 Difference]: Start difference. First operand 5085 states and 7196 transitions. Second operand 4 states. [2020-12-22 13:58:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:58:53,284 INFO L93 Difference]: Finished difference Result 13926 states and 19899 transitions. [2020-12-22 13:58:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:58:53,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 13:58:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:58:53,362 INFO L225 Difference]: With dead ends: 13926 [2020-12-22 13:58:53,363 INFO L226 Difference]: Without dead ends: 8855 [2020-12-22 13:58:53,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:58:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8855 states. [2020-12-22 13:58:53,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8855 to 8607. [2020-12-22 13:58:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8607 states. [2020-12-22 13:58:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8607 states to 8607 states and 12355 transitions. [2020-12-22 13:58:53,756 INFO L78 Accepts]: Start accepts. Automaton has 8607 states and 12355 transitions. Word has length 46 [2020-12-22 13:58:53,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:58:53,756 INFO L481 AbstractCegarLoop]: Abstraction has 8607 states and 12355 transitions. [2020-12-22 13:58:53,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:58:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8607 states and 12355 transitions. [2020-12-22 13:58:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 13:58:53,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:58:53,763 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:58:53,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:58:53,764 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:58:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:58:53,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1755882798, now seen corresponding path program 1 times [2020-12-22 13:58:53,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:58:53,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475416915] [2020-12-22 13:58:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:58:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:58:54,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-12-22 13:58:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:58:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:58:54,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475416915] [2020-12-22 13:58:54,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:58:54,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:58:54,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310900622] [2020-12-22 13:58:54,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:58:54,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:58:54,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:58:54,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:58:54,046 INFO L87 Difference]: Start difference. First operand 8607 states and 12355 transitions. Second operand 4 states. [2020-12-22 13:59:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:59:06,322 INFO L93 Difference]: Finished difference Result 13970 states and 20071 transitions. [2020-12-22 13:59:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:59:06,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 13:59:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:59:06,367 INFO L225 Difference]: With dead ends: 13970 [2020-12-22 13:59:06,367 INFO L226 Difference]: Without dead ends: 5376 [2020-12-22 13:59:06,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:59:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2020-12-22 13:59:06,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 5223. [2020-12-22 13:59:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5223 states. [2020-12-22 13:59:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 7507 transitions. [2020-12-22 13:59:06,607 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 7507 transitions. Word has length 63 [2020-12-22 13:59:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:59:06,608 INFO L481 AbstractCegarLoop]: Abstraction has 5223 states and 7507 transitions. [2020-12-22 13:59:06,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:59:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 7507 transitions. [2020-12-22 13:59:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 13:59:06,615 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:59:06,616 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:59:06,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:59:06,616 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:59:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:59:06,617 INFO L82 PathProgramCache]: Analyzing trace with hash 897275917, now seen corresponding path program 1 times [2020-12-22 13:59:06,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:59:06,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486552201] [2020-12-22 13:59:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:59:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:06,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-12-22 13:59:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:59:06,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486552201] [2020-12-22 13:59:06,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:59:06,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:59:06,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502334228] [2020-12-22 13:59:06,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:59:06,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:59:06,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:59:06,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:59:06,887 INFO L87 Difference]: Start difference. First operand 5223 states and 7507 transitions. Second operand 4 states. [2020-12-22 13:59:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:59:20,580 INFO L93 Difference]: Finished difference Result 11545 states and 16633 transitions. [2020-12-22 13:59:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:59:20,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-22 13:59:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:59:20,625 INFO L225 Difference]: With dead ends: 11545 [2020-12-22 13:59:20,626 INFO L226 Difference]: Without dead ends: 7217 [2020-12-22 13:59:20,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:59:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7217 states. [2020-12-22 13:59:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7217 to 7001. [2020-12-22 13:59:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7001 states. [2020-12-22 13:59:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 10112 transitions. [2020-12-22 13:59:20,889 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 10112 transitions. Word has length 72 [2020-12-22 13:59:20,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:59:20,889 INFO L481 AbstractCegarLoop]: Abstraction has 7001 states and 10112 transitions. [2020-12-22 13:59:20,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:59:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 10112 transitions. [2020-12-22 13:59:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 13:59:20,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:59:20,900 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:59:20,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:59:20,900 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:59:20,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:59:20,901 INFO L82 PathProgramCache]: Analyzing trace with hash -180201131, now seen corresponding path program 1 times [2020-12-22 13:59:20,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:59:20,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176651370] [2020-12-22 13:59:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:59:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:21,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-12-22 13:59:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:59:21,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176651370] [2020-12-22 13:59:21,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:59:21,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:59:21,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52090838] [2020-12-22 13:59:21,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:59:21,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:59:21,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:59:21,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:59:21,379 INFO L87 Difference]: Start difference. First operand 7001 states and 10112 transitions. Second operand 5 states. [2020-12-22 13:59:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:59:42,896 INFO L93 Difference]: Finished difference Result 15813 states and 22759 transitions. [2020-12-22 13:59:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:59:42,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 13:59:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:59:42,941 INFO L225 Difference]: With dead ends: 15813 [2020-12-22 13:59:42,941 INFO L226 Difference]: Without dead ends: 9707 [2020-12-22 13:59:42,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:59:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9707 states. [2020-12-22 13:59:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9707 to 7005. [2020-12-22 13:59:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7005 states. [2020-12-22 13:59:43,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7005 states to 7005 states and 10116 transitions. [2020-12-22 13:59:43,233 INFO L78 Accepts]: Start accepts. Automaton has 7005 states and 10116 transitions. Word has length 83 [2020-12-22 13:59:43,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:59:43,233 INFO L481 AbstractCegarLoop]: Abstraction has 7005 states and 10116 transitions. [2020-12-22 13:59:43,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:59:43,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7005 states and 10116 transitions. [2020-12-22 13:59:43,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 13:59:43,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:59:43,247 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:59:43,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:59:43,247 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:59:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:59:43,248 INFO L82 PathProgramCache]: Analyzing trace with hash -605461596, now seen corresponding path program 1 times [2020-12-22 13:59:43,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:59:43,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050618367] [2020-12-22 13:59:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:59:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:43,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-12-22 13:59:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:59:43,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050618367] [2020-12-22 13:59:43,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:59:43,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:59:43,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209859610] [2020-12-22 13:59:43,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:59:43,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:59:43,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:59:43,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:59:43,530 INFO L87 Difference]: Start difference. First operand 7005 states and 10116 transitions. Second operand 4 states. [2020-12-22 13:59:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:59:54,262 INFO L93 Difference]: Finished difference Result 13327 states and 19237 transitions. [2020-12-22 13:59:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:59:54,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-22 13:59:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:59:54,297 INFO L225 Difference]: With dead ends: 13327 [2020-12-22 13:59:54,298 INFO L226 Difference]: Without dead ends: 7217 [2020-12-22 13:59:54,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:59:54,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7217 states. [2020-12-22 13:59:54,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7217 to 7007. [2020-12-22 13:59:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7007 states. [2020-12-22 13:59:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 10118 transitions. [2020-12-22 13:59:54,558 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 10118 transitions. Word has length 90 [2020-12-22 13:59:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:59:54,558 INFO L481 AbstractCegarLoop]: Abstraction has 7007 states and 10118 transitions. [2020-12-22 13:59:54,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:59:54,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 10118 transitions. [2020-12-22 13:59:54,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 13:59:54,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:59:54,576 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:59:54,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:59:54,581 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:59:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:59:54,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1502854874, now seen corresponding path program 1 times [2020-12-22 13:59:54,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:59:54,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281157993] [2020-12-22 13:59:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:59:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-12-22 13:59:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:59:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:59:55,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281157993] [2020-12-22 13:59:55,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:59:55,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 13:59:55,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666298100] [2020-12-22 13:59:55,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:59:55,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:59:55,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:59:55,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:59:55,141 INFO L87 Difference]: Start difference. First operand 7007 states and 10118 transitions. Second operand 6 states. [2020-12-22 14:00:21,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:00:21,252 INFO L93 Difference]: Finished difference Result 16899 states and 24307 transitions. [2020-12-22 14:00:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 14:00:21,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-12-22 14:00:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:00:21,298 INFO L225 Difference]: With dead ends: 16899 [2020-12-22 14:00:21,298 INFO L226 Difference]: Without dead ends: 10787 [2020-12-22 14:00:21,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 14:00:21,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10787 states. [2020-12-22 14:00:21,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10787 to 7139. [2020-12-22 14:00:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7139 states. [2020-12-22 14:00:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7139 states to 7139 states and 10294 transitions. [2020-12-22 14:00:21,719 INFO L78 Accepts]: Start accepts. Automaton has 7139 states and 10294 transitions. Word has length 90 [2020-12-22 14:00:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:00:21,721 INFO L481 AbstractCegarLoop]: Abstraction has 7139 states and 10294 transitions. [2020-12-22 14:00:21,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 14:00:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 7139 states and 10294 transitions. [2020-12-22 14:00:21,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 14:00:21,734 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:21,734 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:00:21,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 14:00:21,734 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:21,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:21,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1665626572, now seen corresponding path program 1 times [2020-12-22 14:00:21,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:21,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754155606] [2020-12-22 14:00:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:22,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-12-22 14:00:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 14:00:22,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754155606] [2020-12-22 14:00:22,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:00:22,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:00:22,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607242734] [2020-12-22 14:00:22,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:00:22,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:22,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:00:22,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:00:22,180 INFO L87 Difference]: Start difference. First operand 7139 states and 10294 transitions. Second operand 4 states. [2020-12-22 14:00:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:00:33,141 INFO L93 Difference]: Finished difference Result 14477 states and 20884 transitions. [2020-12-22 14:00:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:00:33,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-12-22 14:00:33,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:00:33,169 INFO L225 Difference]: With dead ends: 14477 [2020-12-22 14:00:33,169 INFO L226 Difference]: Without dead ends: 7350 [2020-12-22 14:00:33,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:00:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2020-12-22 14:00:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7140. [2020-12-22 14:00:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7140 states. [2020-12-22 14:00:33,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7140 states to 7140 states and 10295 transitions. [2020-12-22 14:00:33,452 INFO L78 Accepts]: Start accepts. Automaton has 7140 states and 10295 transitions. Word has length 95 [2020-12-22 14:00:33,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:00:33,452 INFO L481 AbstractCegarLoop]: Abstraction has 7140 states and 10295 transitions. [2020-12-22 14:00:33,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:00:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 7140 states and 10295 transitions. [2020-12-22 14:00:33,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 14:00:33,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:33,465 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:00:33,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 14:00:33,465 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:33,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:33,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1521278575, now seen corresponding path program 1 times [2020-12-22 14:00:33,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:33,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640480419] [2020-12-22 14:00:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-12-22 14:00:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 14:00:34,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640480419] [2020-12-22 14:00:34,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947560195] [2020-12-22 14:00:34,027 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 14:00:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:35,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 14:00:35,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:00:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:00:35,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:00:35,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-12-22 14:00:35,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455355130] [2020-12-22 14:00:35,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:00:35,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:35,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:00:35,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 14:00:35,331 INFO L87 Difference]: Start difference. First operand 7140 states and 10295 transitions. Second operand 5 states. [2020-12-22 14:00:42,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:00:42,050 INFO L93 Difference]: Finished difference Result 17554 states and 25249 transitions. [2020-12-22 14:00:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 14:00:42,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-12-22 14:00:42,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:00:42,111 INFO L225 Difference]: With dead ends: 17554 [2020-12-22 14:00:42,112 INFO L226 Difference]: Without dead ends: 11310 [2020-12-22 14:00:42,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-22 14:00:42,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2020-12-22 14:00:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 7140. [2020-12-22 14:00:42,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7140 states. [2020-12-22 14:00:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7140 states to 7140 states and 10295 transitions. [2020-12-22 14:00:42,733 INFO L78 Accepts]: Start accepts. Automaton has 7140 states and 10295 transitions. Word has length 96 [2020-12-22 14:00:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:00:42,733 INFO L481 AbstractCegarLoop]: Abstraction has 7140 states and 10295 transitions. [2020-12-22 14:00:42,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:00:42,733 INFO L276 IsEmpty]: Start isEmpty. Operand 7140 states and 10295 transitions. [2020-12-22 14:00:42,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 14:00:42,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:42,746 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:42,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 14:00:42,960 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:42,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:42,960 INFO L82 PathProgramCache]: Analyzing trace with hash 216301225, now seen corresponding path program 1 times [2020-12-22 14:00:42,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:42,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064532220] [2020-12-22 14:00:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:43,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-12-22 14:00:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:43,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 14:00:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 14:00:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:00:43,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064532220] [2020-12-22 14:00:43,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:00:43,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:00:43,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453818699] [2020-12-22 14:00:43,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:00:43,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:43,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:00:43,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:00:43,302 INFO L87 Difference]: Start difference. First operand 7140 states and 10295 transitions. Second operand 4 states. [2020-12-22 14:00:54,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:00:54,220 INFO L93 Difference]: Finished difference Result 13596 states and 19596 transitions. [2020-12-22 14:00:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:00:54,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-12-22 14:00:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:00:54,252 INFO L225 Difference]: With dead ends: 13596 [2020-12-22 14:00:54,253 INFO L226 Difference]: Without dead ends: 7352 [2020-12-22 14:00:54,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:00:54,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2020-12-22 14:00:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7142. [2020-12-22 14:00:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7142 states. [2020-12-22 14:00:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 10297 transitions. [2020-12-22 14:00:54,543 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 10297 transitions. Word has length 136 [2020-12-22 14:00:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:00:54,543 INFO L481 AbstractCegarLoop]: Abstraction has 7142 states and 10297 transitions. [2020-12-22 14:00:54,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:00:54,544 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 10297 transitions. [2020-12-22 14:00:54,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 14:00:54,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:54,556 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:54,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 14:00:54,556 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:54,557 INFO L82 PathProgramCache]: Analyzing trace with hash -2117091413, now seen corresponding path program 1 times [2020-12-22 14:00:54,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:54,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129087535] [2020-12-22 14:00:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:54,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-12-22 14:00:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 14:00:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:55,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 14:00:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:00:55,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129087535] [2020-12-22 14:00:55,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:00:55,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 14:00:55,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415245749] [2020-12-22 14:00:55,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 14:00:55,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:55,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 14:00:55,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:00:55,136 INFO L87 Difference]: Start difference. First operand 7142 states and 10297 transitions. Second operand 7 states. [2020-12-22 14:01:14,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:01:14,095 INFO L93 Difference]: Finished difference Result 17404 states and 25122 transitions. [2020-12-22 14:01:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 14:01:14,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-12-22 14:01:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:01:14,133 INFO L225 Difference]: With dead ends: 17404 [2020-12-22 14:01:14,133 INFO L226 Difference]: Without dead ends: 11158 [2020-12-22 14:01:14,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-22 14:01:14,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11158 states. [2020-12-22 14:01:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11158 to 7146. [2020-12-22 14:01:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7146 states. [2020-12-22 14:01:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7146 states to 7146 states and 10301 transitions. [2020-12-22 14:01:14,639 INFO L78 Accepts]: Start accepts. Automaton has 7146 states and 10301 transitions. Word has length 136 [2020-12-22 14:01:14,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:01:14,639 INFO L481 AbstractCegarLoop]: Abstraction has 7146 states and 10301 transitions. [2020-12-22 14:01:14,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 14:01:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 7146 states and 10301 transitions. [2020-12-22 14:01:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 14:01:14,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:01:14,657 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:14,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 14:01:14,658 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:01:14,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:01:14,659 INFO L82 PathProgramCache]: Analyzing trace with hash 791090473, now seen corresponding path program 1 times [2020-12-22 14:01:14,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:01:14,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667158590] [2020-12-22 14:01:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:01:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-12-22 14:01:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 14:01:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 14:01:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:01:15,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667158590] [2020-12-22 14:01:15,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:01:15,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:01:15,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784654318] [2020-12-22 14:01:15,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:01:15,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:01:15,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:01:15,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:01:15,005 INFO L87 Difference]: Start difference. First operand 7146 states and 10301 transitions. Second operand 4 states. [2020-12-22 14:01:26,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:01:26,162 INFO L93 Difference]: Finished difference Result 13788 states and 19842 transitions. [2020-12-22 14:01:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:01:26,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-12-22 14:01:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:01:26,195 INFO L225 Difference]: With dead ends: 13788 [2020-12-22 14:01:26,195 INFO L226 Difference]: Without dead ends: 7538 [2020-12-22 14:01:26,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:01:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7538 states. [2020-12-22 14:01:26,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7538 to 7326. [2020-12-22 14:01:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7326 states. [2020-12-22 14:01:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7326 states to 7326 states and 10531 transitions. [2020-12-22 14:01:26,718 INFO L78 Accepts]: Start accepts. Automaton has 7326 states and 10531 transitions. Word has length 136 [2020-12-22 14:01:26,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:01:26,719 INFO L481 AbstractCegarLoop]: Abstraction has 7326 states and 10531 transitions. [2020-12-22 14:01:26,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:01:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7326 states and 10531 transitions. [2020-12-22 14:01:26,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 14:01:26,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:01:26,730 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:26,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 14:01:26,731 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:01:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:01:26,731 INFO L82 PathProgramCache]: Analyzing trace with hash 741764192, now seen corresponding path program 1 times [2020-12-22 14:01:26,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:01:26,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112513540] [2020-12-22 14:01:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:01:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:01:27,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112513540] [2020-12-22 14:01:27,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:01:27,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:01:27,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079975306] [2020-12-22 14:01:27,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:01:27,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:01:27,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:01:27,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:01:27,045 INFO L87 Difference]: Start difference. First operand 7326 states and 10531 transitions. Second operand 4 states. [2020-12-22 14:01:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:01:29,730 INFO L93 Difference]: Finished difference Result 18176 states and 26199 transitions. [2020-12-22 14:01:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:01:29,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-12-22 14:01:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:01:29,766 INFO L225 Difference]: With dead ends: 18176 [2020-12-22 14:01:29,766 INFO L226 Difference]: Without dead ends: 11746 [2020-12-22 14:01:29,787 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 14:01:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11746 states. [2020-12-22 14:01:30,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11746 to 7334. [2020-12-22 14:01:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7334 states. [2020-12-22 14:01:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7334 states to 7334 states and 10539 transitions. [2020-12-22 14:01:30,322 INFO L78 Accepts]: Start accepts. Automaton has 7334 states and 10539 transitions. Word has length 123 [2020-12-22 14:01:30,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:01:30,323 INFO L481 AbstractCegarLoop]: Abstraction has 7334 states and 10539 transitions. [2020-12-22 14:01:30,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:01:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand 7334 states and 10539 transitions. [2020-12-22 14:01:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 14:01:30,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:01:30,335 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:30,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 14:01:30,335 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:01:30,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:01:30,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1000637720, now seen corresponding path program 1 times [2020-12-22 14:01:30,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:01:30,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550903279] [2020-12-22 14:01:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:01:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:30,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-12-22 14:01:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:30,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 14:01:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:30,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 14:01:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:01:30,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550903279] [2020-12-22 14:01:30,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:01:30,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:01:30,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733416857] [2020-12-22 14:01:30,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:01:30,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:01:30,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:01:30,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:01:30,738 INFO L87 Difference]: Start difference. First operand 7334 states and 10539 transitions. Second operand 4 states. [2020-12-22 14:01:42,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:01:42,655 INFO L93 Difference]: Finished difference Result 15878 states and 23087 transitions. [2020-12-22 14:01:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:01:42,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-12-22 14:01:42,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:01:42,694 INFO L225 Difference]: With dead ends: 15878 [2020-12-22 14:01:42,695 INFO L226 Difference]: Without dead ends: 8559 [2020-12-22 14:01:42,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:01:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8559 states. [2020-12-22 14:01:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8559 to 7474. [2020-12-22 14:01:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7474 states. [2020-12-22 14:01:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7474 states to 7474 states and 10707 transitions. [2020-12-22 14:01:43,374 INFO L78 Accepts]: Start accepts. Automaton has 7474 states and 10707 transitions. Word has length 145 [2020-12-22 14:01:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:01:43,375 INFO L481 AbstractCegarLoop]: Abstraction has 7474 states and 10707 transitions. [2020-12-22 14:01:43,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:01:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7474 states and 10707 transitions. [2020-12-22 14:01:43,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 14:01:43,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:01:43,386 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:43,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 14:01:43,387 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:01:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:01:43,387 INFO L82 PathProgramCache]: Analyzing trace with hash -754746162, now seen corresponding path program 1 times [2020-12-22 14:01:43,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:01:43,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864599924] [2020-12-22 14:01:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:01:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:43,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-12-22 14:01:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:43,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 14:01:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 14:01:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:01:43,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864599924] [2020-12-22 14:01:43,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:01:43,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:01:43,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070031939] [2020-12-22 14:01:43,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:01:43,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:01:43,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:01:43,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:01:43,810 INFO L87 Difference]: Start difference. First operand 7474 states and 10707 transitions. Second operand 5 states. [2020-12-22 14:01:55,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:01:55,862 INFO L93 Difference]: Finished difference Result 16627 states and 24244 transitions. [2020-12-22 14:01:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 14:01:55,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-12-22 14:01:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:01:55,905 INFO L225 Difference]: With dead ends: 16627 [2020-12-22 14:01:55,906 INFO L226 Difference]: Without dead ends: 9168 [2020-12-22 14:01:55,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 14:01:55,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9168 states. [2020-12-22 14:01:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9168 to 7502. [2020-12-22 14:01:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7502 states. [2020-12-22 14:01:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7502 states to 7502 states and 10735 transitions. [2020-12-22 14:01:56,399 INFO L78 Accepts]: Start accepts. Automaton has 7502 states and 10735 transitions. Word has length 150 [2020-12-22 14:01:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:01:56,399 INFO L481 AbstractCegarLoop]: Abstraction has 7502 states and 10735 transitions. [2020-12-22 14:01:56,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:01:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 7502 states and 10735 transitions. [2020-12-22 14:01:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 14:01:56,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:01:56,412 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:56,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 14:01:56,412 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:01:56,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:01:56,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1380647428, now seen corresponding path program 1 times [2020-12-22 14:01:56,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:01:56,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188719505] [2020-12-22 14:01:56,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:01:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:56,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-12-22 14:01:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:56,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 14:01:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 14:01:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:01:56,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188719505] [2020-12-22 14:01:56,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037139797] [2020-12-22 14:01:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:01:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:01:58,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 2830 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 14:01:58,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:01:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:01:58,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 14:01:58,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2020-12-22 14:01:58,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652791951] [2020-12-22 14:01:58,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 14:01:58,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:01:58,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 14:01:58,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:01:58,492 INFO L87 Difference]: Start difference. First operand 7502 states and 10735 transitions. Second operand 7 states. [2020-12-22 14:02:11,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:02:11,050 INFO L93 Difference]: Finished difference Result 17089 states and 24860 transitions. [2020-12-22 14:02:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:02:11,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-12-22 14:02:11,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:02:11,097 INFO L225 Difference]: With dead ends: 17089 [2020-12-22 14:02:11,097 INFO L226 Difference]: Without dead ends: 9602 [2020-12-22 14:02:11,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:02:11,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9602 states. [2020-12-22 14:02:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9602 to 7642. [2020-12-22 14:02:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7642 states. [2020-12-22 14:02:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7642 states to 7642 states and 10903 transitions. [2020-12-22 14:02:11,702 INFO L78 Accepts]: Start accepts. Automaton has 7642 states and 10903 transitions. Word has length 150 [2020-12-22 14:02:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:02:11,703 INFO L481 AbstractCegarLoop]: Abstraction has 7642 states and 10903 transitions. [2020-12-22 14:02:11,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 14:02:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 7642 states and 10903 transitions. [2020-12-22 14:02:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 14:02:11,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:02:11,714 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 14:02:11,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 14:02:11,928 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:02:11,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:02:11,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1346401176, now seen corresponding path program 2 times [2020-12-22 14:02:11,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:02:11,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774137604] [2020-12-22 14:02:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:02:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:02:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-12-22 14:02:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:02:12,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 14:02:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:02:12,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 14:02:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:02:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:02:12,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774137604] [2020-12-22 14:02:12,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662400000] [2020-12-22 14:02:12,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true