/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:11:15,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:11:15,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:11:15,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:11:15,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:11:15,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:11:15,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:11:15,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:11:15,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:11:15,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:11:15,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:11:15,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:11:15,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:11:15,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:11:15,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:11:15,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:11:15,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:11:15,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:11:15,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:11:15,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:11:15,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:11:15,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:11:15,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:11:15,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:11:15,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:11:15,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:11:15,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:11:15,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:11:15,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:11:15,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:11:15,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:11:15,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:11:15,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:11:15,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:11:15,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:11:15,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:11:15,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:11:15,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:11:15,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:11:15,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:11:15,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:11:15,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:11:16,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:11:16,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:11:16,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:11:16,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:11:16,027 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:11:16,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:11:16,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:11:16,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:11:16,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:11:16,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:11:16,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:11:16,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:11:16,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:11:16,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:11:16,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:11:16,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:11:16,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:11:16,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:11:16,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:11:16,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:11:16,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:11:16,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:11:16,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:11:16,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:11:16,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:11:16,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:11:16,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:11:16,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:11:16,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:11:16,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:11:16,535 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:11:16,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i [2020-12-22 13:11:16,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd78fe16/73b202e66c8149d69aa07eb480173b31/FLAG2cbcb196d [2020-12-22 13:11:17,668 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:11:17,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i [2020-12-22 13:11:17,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd78fe16/73b202e66c8149d69aa07eb480173b31/FLAG2cbcb196d [2020-12-22 13:11:18,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd78fe16/73b202e66c8149d69aa07eb480173b31 [2020-12-22 13:11:18,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:11:18,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:11:18,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:11:18,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:11:18,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:11:18,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:11:18" (1/1) ... [2020-12-22 13:11:18,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450b824b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:18, skipping insertion in model container [2020-12-22 13:11:18,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:11:18" (1/1) ... [2020-12-22 13:11:18,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:11:18,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:11:19,251 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i[159689,159702] [2020-12-22 13:11:19,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:11:19,691 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:11:19,897 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i[159689,159702] [2020-12-22 13:11:20,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:11:20,427 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:11:20,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20 WrapperNode [2020-12-22 13:11:20,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:11:20,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:11:20,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:11:20,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:11:20,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (1/1) ... [2020-12-22 13:11:20,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (1/1) ... [2020-12-22 13:11:20,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:11:20,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:11:20,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:11:20,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:11:20,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (1/1) ... [2020-12-22 13:11:20,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (1/1) ... [2020-12-22 13:11:20,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (1/1) ... [2020-12-22 13:11:20,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (1/1) ... [2020-12-22 13:11:20,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (1/1) ... [2020-12-22 13:11:20,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (1/1) ... [2020-12-22 13:11:21,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (1/1) ... [2020-12-22 13:11:21,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:11:21,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:11:21,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:11:21,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:11:21,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (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 13:11:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:11:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure ipheth_rx_submit [2020-12-22 13:11:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ipheth_rx_submit [2020-12-22 13:11:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_9 [2020-12-22 13:11:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_9 [2020-12-22 13:11:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:11:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:11:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:11:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure ipheth_rcvbulk_callback [2020-12-22 13:11:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ipheth_rcvbulk_callback [2020-12-22 13:11:21,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-12-22 13:11:21,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-12-22 13:11:21,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:11:21,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:11:21,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:11:21,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:11:21,157 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:11:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:11:21,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:11:21,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:11:21,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:11:21,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:11:21,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:11:21,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:11:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:11:25,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:11:25,307 INFO L299 CfgBuilder]: Removed 491 assume(true) statements. [2020-12-22 13:11:25,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:11:25 BoogieIcfgContainer [2020-12-22 13:11:25,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:11:25,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:11:25,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:11:25,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:11:25,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:11:18" (1/3) ... [2020-12-22 13:11:25,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5540a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:11:25, skipping insertion in model container [2020-12-22 13:11:25,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:20" (2/3) ... [2020-12-22 13:11:25,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5540a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:11:25, skipping insertion in model container [2020-12-22 13:11:25,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:11:25" (3/3) ... [2020-12-22 13:11:25,322 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i [2020-12-22 13:11:25,330 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:11:25,337 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 13:11:25,359 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 13:11:25,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:11:25,393 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:11:25,393 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:11:25,393 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:11:25,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:11:25,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:11:25,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:11:25,394 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:11:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states. [2020-12-22 13:11:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 13:11:25,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:25,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:11:25,432 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:25,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:25,439 INFO L82 PathProgramCache]: Analyzing trace with hash 729149926, now seen corresponding path program 1 times [2020-12-22 13:11:25,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:25,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261887197] [2020-12-22 13:11:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:26,123 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 13:11:26,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261887197] [2020-12-22 13:11:26,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:26,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:11:26,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957893894] [2020-12-22 13:11:26,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:26,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:26,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:26,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:11:26,152 INFO L87 Difference]: Start difference. First operand 453 states. Second operand 3 states. [2020-12-22 13:11:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:26,813 INFO L93 Difference]: Finished difference Result 1305 states and 1804 transitions. [2020-12-22 13:11:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:26,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 13:11:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:26,850 INFO L225 Difference]: With dead ends: 1305 [2020-12-22 13:11:26,850 INFO L226 Difference]: Without dead ends: 839 [2020-12-22 13:11:26,863 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 13:11:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2020-12-22 13:11:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2020-12-22 13:11:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-12-22 13:11:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1108 transitions. [2020-12-22 13:11:27,028 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1108 transitions. Word has length 19 [2020-12-22 13:11:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:27,028 INFO L481 AbstractCegarLoop]: Abstraction has 839 states and 1108 transitions. [2020-12-22 13:11:27,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1108 transitions. [2020-12-22 13:11:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 13:11:27,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:27,037 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] [2020-12-22 13:11:27,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:11:27,038 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:27,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1197836240, now seen corresponding path program 1 times [2020-12-22 13:11:27,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:27,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136534127] [2020-12-22 13:11:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:27,284 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 13:11:27,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136534127] [2020-12-22 13:11:27,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:27,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:11:27,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248579800] [2020-12-22 13:11:27,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:27,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:27,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:27,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:11:27,291 INFO L87 Difference]: Start difference. First operand 839 states and 1108 transitions. Second operand 3 states. [2020-12-22 13:11:27,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:27,371 INFO L93 Difference]: Finished difference Result 869 states and 1136 transitions. [2020-12-22 13:11:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:27,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 13:11:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:27,377 INFO L225 Difference]: With dead ends: 869 [2020-12-22 13:11:27,378 INFO L226 Difference]: Without dead ends: 854 [2020-12-22 13:11:27,379 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 13:11:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-12-22 13:11:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 839. [2020-12-22 13:11:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-12-22 13:11:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1107 transitions. [2020-12-22 13:11:27,421 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1107 transitions. Word has length 26 [2020-12-22 13:11:27,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:27,421 INFO L481 AbstractCegarLoop]: Abstraction has 839 states and 1107 transitions. [2020-12-22 13:11:27,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1107 transitions. [2020-12-22 13:11:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 13:11:27,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:27,423 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] [2020-12-22 13:11:27,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:11:27,424 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:27,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1197776658, now seen corresponding path program 1 times [2020-12-22 13:11:27,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:27,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262748942] [2020-12-22 13:11:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:27,611 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 13:11:27,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262748942] [2020-12-22 13:11:27,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:27,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:11:27,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833853228] [2020-12-22 13:11:27,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:27,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:27,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:27,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:11:27,615 INFO L87 Difference]: Start difference. First operand 839 states and 1107 transitions. Second operand 3 states. [2020-12-22 13:11:27,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:27,823 INFO L93 Difference]: Finished difference Result 2479 states and 3326 transitions. [2020-12-22 13:11:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:27,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 13:11:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:27,847 INFO L225 Difference]: With dead ends: 2479 [2020-12-22 13:11:27,847 INFO L226 Difference]: Without dead ends: 1658 [2020-12-22 13:11:27,851 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 13:11:27,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2020-12-22 13:11:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1646. [2020-12-22 13:11:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2020-12-22 13:11:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2180 transitions. [2020-12-22 13:11:28,070 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2180 transitions. Word has length 26 [2020-12-22 13:11:28,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:28,072 INFO L481 AbstractCegarLoop]: Abstraction has 1646 states and 2180 transitions. [2020-12-22 13:11:28,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2180 transitions. [2020-12-22 13:11:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 13:11:28,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:28,073 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] [2020-12-22 13:11:28,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:11:28,075 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:28,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1523628889, now seen corresponding path program 1 times [2020-12-22 13:11:28,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:28,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278375687] [2020-12-22 13:11:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:28,285 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 13:11:28,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278375687] [2020-12-22 13:11:28,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:28,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:11:28,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106273090] [2020-12-22 13:11:28,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:28,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:28,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:28,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:11:28,296 INFO L87 Difference]: Start difference. First operand 1646 states and 2180 transitions. Second operand 3 states. [2020-12-22 13:11:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:28,383 INFO L93 Difference]: Finished difference Result 1646 states and 2180 transitions. [2020-12-22 13:11:28,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:28,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 13:11:28,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:28,397 INFO L225 Difference]: With dead ends: 1646 [2020-12-22 13:11:28,398 INFO L226 Difference]: Without dead ends: 1644 [2020-12-22 13:11:28,399 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 13:11:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2020-12-22 13:11:28,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1644. [2020-12-22 13:11:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-12-22 13:11:28,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2178 transitions. [2020-12-22 13:11:28,540 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2178 transitions. Word has length 27 [2020-12-22 13:11:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:28,541 INFO L481 AbstractCegarLoop]: Abstraction has 1644 states and 2178 transitions. [2020-12-22 13:11:28,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2178 transitions. [2020-12-22 13:11:28,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 13:11:28,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:28,543 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] [2020-12-22 13:11:28,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:11:28,543 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:28,544 INFO L82 PathProgramCache]: Analyzing trace with hash -12145064, now seen corresponding path program 1 times [2020-12-22 13:11:28,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:28,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134600226] [2020-12-22 13:11:28,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:28,725 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 13:11:28,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134600226] [2020-12-22 13:11:28,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:28,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:11:28,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950271014] [2020-12-22 13:11:28,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:28,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:28,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:28,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:11:28,728 INFO L87 Difference]: Start difference. First operand 1644 states and 2178 transitions. Second operand 3 states. [2020-12-22 13:11:28,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:28,820 INFO L93 Difference]: Finished difference Result 1644 states and 2178 transitions. [2020-12-22 13:11:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:28,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 13:11:28,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:28,832 INFO L225 Difference]: With dead ends: 1644 [2020-12-22 13:11:28,832 INFO L226 Difference]: Without dead ends: 1642 [2020-12-22 13:11:28,833 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 13:11:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-12-22 13:11:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2020-12-22 13:11:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2020-12-22 13:11:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2176 transitions. [2020-12-22 13:11:28,946 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2176 transitions. Word has length 28 [2020-12-22 13:11:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:28,946 INFO L481 AbstractCegarLoop]: Abstraction has 1642 states and 2176 transitions. [2020-12-22 13:11:28,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2176 transitions. [2020-12-22 13:11:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 13:11:28,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:28,949 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] [2020-12-22 13:11:28,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:11:28,950 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash -376497341, now seen corresponding path program 1 times [2020-12-22 13:11:28,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:28,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393772400] [2020-12-22 13:11:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:29,123 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 13:11:29,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393772400] [2020-12-22 13:11:29,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:29,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:11:29,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062895987] [2020-12-22 13:11:29,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:29,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:29,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:29,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:11:29,126 INFO L87 Difference]: Start difference. First operand 1642 states and 2176 transitions. Second operand 3 states. [2020-12-22 13:11:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:29,248 INFO L93 Difference]: Finished difference Result 1642 states and 2176 transitions. [2020-12-22 13:11:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:29,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-22 13:11:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:29,269 INFO L225 Difference]: With dead ends: 1642 [2020-12-22 13:11:29,270 INFO L226 Difference]: Without dead ends: 1640 [2020-12-22 13:11:29,278 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 13:11:29,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-12-22 13:11:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2020-12-22 13:11:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1640 states. [2020-12-22 13:11:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2174 transitions. [2020-12-22 13:11:29,408 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2174 transitions. Word has length 29 [2020-12-22 13:11:29,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:29,408 INFO L481 AbstractCegarLoop]: Abstraction has 1640 states and 2174 transitions. [2020-12-22 13:11:29,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2174 transitions. [2020-12-22 13:11:29,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 13:11:29,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:29,412 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] [2020-12-22 13:11:29,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:11:29,412 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:29,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1213483970, now seen corresponding path program 1 times [2020-12-22 13:11:29,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:29,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25378633] [2020-12-22 13:11:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:29,584 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 13:11:29,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25378633] [2020-12-22 13:11:29,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:29,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:11:29,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280495221] [2020-12-22 13:11:29,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:29,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:29,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:29,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:11:29,588 INFO L87 Difference]: Start difference. First operand 1640 states and 2174 transitions. Second operand 3 states. [2020-12-22 13:11:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:29,695 INFO L93 Difference]: Finished difference Result 1640 states and 2174 transitions. [2020-12-22 13:11:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:29,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 13:11:29,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:29,707 INFO L225 Difference]: With dead ends: 1640 [2020-12-22 13:11:29,708 INFO L226 Difference]: Without dead ends: 1631 [2020-12-22 13:11:29,713 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 13:11:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-12-22 13:11:29,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2020-12-22 13:11:29,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2020-12-22 13:11:29,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2163 transitions. [2020-12-22 13:11:29,836 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2163 transitions. Word has length 30 [2020-12-22 13:11:29,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:29,836 INFO L481 AbstractCegarLoop]: Abstraction has 1631 states and 2163 transitions. [2020-12-22 13:11:29,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2163 transitions. [2020-12-22 13:11:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 13:11:29,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:29,845 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] [2020-12-22 13:11:29,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:11:29,845 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:29,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:29,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2139707916, now seen corresponding path program 1 times [2020-12-22 13:11:29,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:29,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457561105] [2020-12-22 13:11:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:30,023 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 13:11:30,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457561105] [2020-12-22 13:11:30,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:30,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:11:30,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204259032] [2020-12-22 13:11:30,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:30,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:30,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:30,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:11:30,027 INFO L87 Difference]: Start difference. First operand 1631 states and 2163 transitions. Second operand 3 states. [2020-12-22 13:11:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:30,236 INFO L93 Difference]: Finished difference Result 4178 states and 5567 transitions. [2020-12-22 13:11:30,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:30,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 13:11:30,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:30,253 INFO L225 Difference]: With dead ends: 4178 [2020-12-22 13:11:30,254 INFO L226 Difference]: Without dead ends: 2565 [2020-12-22 13:11:30,259 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 13:11:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2020-12-22 13:11:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2557. [2020-12-22 13:11:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2557 states. [2020-12-22 13:11:30,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3414 transitions. [2020-12-22 13:11:30,461 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3414 transitions. Word has length 87 [2020-12-22 13:11:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:30,461 INFO L481 AbstractCegarLoop]: Abstraction has 2557 states and 3414 transitions. [2020-12-22 13:11:30,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:30,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3414 transitions. [2020-12-22 13:11:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 13:11:30,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:30,470 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:30,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:11:30,470 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:30,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:30,472 INFO L82 PathProgramCache]: Analyzing trace with hash -413485961, now seen corresponding path program 1 times [2020-12-22 13:11:30,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:30,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139179223] [2020-12-22 13:11:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:30,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139179223] [2020-12-22 13:11:30,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:30,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:11:30,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52642005] [2020-12-22 13:11:30,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:30,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:30,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:30,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:11:30,709 INFO L87 Difference]: Start difference. First operand 2557 states and 3414 transitions. Second operand 3 states. [2020-12-22 13:11:30,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:30,878 INFO L93 Difference]: Finished difference Result 5100 states and 6815 transitions. [2020-12-22 13:11:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:30,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 13:11:30,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:30,898 INFO L225 Difference]: With dead ends: 5100 [2020-12-22 13:11:30,898 INFO L226 Difference]: Without dead ends: 2561 [2020-12-22 13:11:30,906 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 13:11:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2020-12-22 13:11:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2561. [2020-12-22 13:11:31,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2561 states. [2020-12-22 13:11:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 3418 transitions. [2020-12-22 13:11:31,063 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 3418 transitions. Word has length 95 [2020-12-22 13:11:31,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:31,063 INFO L481 AbstractCegarLoop]: Abstraction has 2561 states and 3418 transitions. [2020-12-22 13:11:31,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:31,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 3418 transitions. [2020-12-22 13:11:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 13:11:31,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:31,073 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:31,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:11:31,076 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:31,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:31,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1514786741, now seen corresponding path program 1 times [2020-12-22 13:11:31,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:31,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370099072] [2020-12-22 13:11:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:31,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370099072] [2020-12-22 13:11:31,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:31,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:11:31,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140967437] [2020-12-22 13:11:31,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:11:31,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:31,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:11:31,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:11:31,355 INFO L87 Difference]: Start difference. First operand 2561 states and 3418 transitions. Second operand 5 states. [2020-12-22 13:11:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:31,934 INFO L93 Difference]: Finished difference Result 8529 states and 11530 transitions. [2020-12-22 13:11:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:11:31,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-12-22 13:11:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:31,971 INFO L225 Difference]: With dead ends: 8529 [2020-12-22 13:11:31,971 INFO L226 Difference]: Without dead ends: 5986 [2020-12-22 13:11:31,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:11:31,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2020-12-22 13:11:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 2573. [2020-12-22 13:11:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-12-22 13:11:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3430 transitions. [2020-12-22 13:11:32,256 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3430 transitions. Word has length 95 [2020-12-22 13:11:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:32,258 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 3430 transitions. [2020-12-22 13:11:32,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:11:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3430 transitions. [2020-12-22 13:11:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 13:11:32,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:32,270 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:32,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:11:32,271 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:32,273 INFO L82 PathProgramCache]: Analyzing trace with hash -95826638, now seen corresponding path program 1 times [2020-12-22 13:11:32,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:32,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818738395] [2020-12-22 13:11:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:32,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818738395] [2020-12-22 13:11:32,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:32,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:11:32,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649072775] [2020-12-22 13:11:32,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:11:32,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:32,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:11:32,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:11:32,553 INFO L87 Difference]: Start difference. First operand 2573 states and 3430 transitions. Second operand 4 states. [2020-12-22 13:11:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:33,227 INFO L93 Difference]: Finished difference Result 6631 states and 8884 transitions. [2020-12-22 13:11:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:11:33,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-12-22 13:11:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:33,272 INFO L225 Difference]: With dead ends: 6631 [2020-12-22 13:11:33,273 INFO L226 Difference]: Without dead ends: 4068 [2020-12-22 13:11:33,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 13:11:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2020-12-22 13:11:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 2573. [2020-12-22 13:11:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-12-22 13:11:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3426 transitions. [2020-12-22 13:11:33,547 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3426 transitions. Word has length 101 [2020-12-22 13:11:33,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:33,547 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 3426 transitions. [2020-12-22 13:11:33,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:11:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3426 transitions. [2020-12-22 13:11:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 13:11:33,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:33,555 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:11:33,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:11:33,556 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:33,556 INFO L82 PathProgramCache]: Analyzing trace with hash -684740018, now seen corresponding path program 1 times [2020-12-22 13:11:33,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:33,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997573763] [2020-12-22 13:11:33,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:33,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997573763] [2020-12-22 13:11:33,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:33,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:11:33,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258761506] [2020-12-22 13:11:33,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:11:33,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:11:33,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:11:33,882 INFO L87 Difference]: Start difference. First operand 2573 states and 3426 transitions. Second operand 5 states. [2020-12-22 13:11:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:34,641 INFO L93 Difference]: Finished difference Result 7694 states and 10341 transitions. [2020-12-22 13:11:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:11:34,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-12-22 13:11:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:34,689 INFO L225 Difference]: With dead ends: 7694 [2020-12-22 13:11:34,689 INFO L226 Difference]: Without dead ends: 5139 [2020-12-22 13:11:34,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:11:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5139 states. [2020-12-22 13:11:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5139 to 2585. [2020-12-22 13:11:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2585 states. [2020-12-22 13:11:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3438 transitions. [2020-12-22 13:11:35,024 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3438 transitions. Word has length 103 [2020-12-22 13:11:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:35,024 INFO L481 AbstractCegarLoop]: Abstraction has 2585 states and 3438 transitions. [2020-12-22 13:11:35,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:11:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3438 transitions. [2020-12-22 13:11:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 13:11:35,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:35,033 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:35,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:11:35,033 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:35,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:35,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1980304342, now seen corresponding path program 1 times [2020-12-22 13:11:35,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:35,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833336737] [2020-12-22 13:11:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:35,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833336737] [2020-12-22 13:11:35,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:35,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:11:35,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4289437] [2020-12-22 13:11:35,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:11:35,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:35,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:11:35,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:11:35,285 INFO L87 Difference]: Start difference. First operand 2585 states and 3438 transitions. Second operand 5 states. [2020-12-22 13:11:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:36,365 INFO L93 Difference]: Finished difference Result 9796 states and 13227 transitions. [2020-12-22 13:11:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:11:36,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 13:11:36,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:36,398 INFO L225 Difference]: With dead ends: 9796 [2020-12-22 13:11:36,398 INFO L226 Difference]: Without dead ends: 7229 [2020-12-22 13:11:36,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:11:36,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7229 states. [2020-12-22 13:11:36,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7229 to 2597. [2020-12-22 13:11:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2597 states. [2020-12-22 13:11:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3450 transitions. [2020-12-22 13:11:36,713 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3450 transitions. Word has length 105 [2020-12-22 13:11:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:36,714 INFO L481 AbstractCegarLoop]: Abstraction has 2597 states and 3450 transitions. [2020-12-22 13:11:36,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:11:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3450 transitions. [2020-12-22 13:11:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 13:11:36,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:36,725 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:36,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:11:36,726 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:36,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:36,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1864851898, now seen corresponding path program 1 times [2020-12-22 13:11:36,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:36,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524980628] [2020-12-22 13:11:36,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:37,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524980628] [2020-12-22 13:11:37,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:37,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 13:11:37,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433690624] [2020-12-22 13:11:37,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:11:37,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:37,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:11:37,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:11:37,004 INFO L87 Difference]: Start difference. First operand 2597 states and 3450 transitions. Second operand 6 states. [2020-12-22 13:11:38,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:38,007 INFO L93 Difference]: Finished difference Result 8805 states and 11838 transitions. [2020-12-22 13:11:38,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:11:38,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-12-22 13:11:38,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:38,028 INFO L225 Difference]: With dead ends: 8805 [2020-12-22 13:11:38,028 INFO L226 Difference]: Without dead ends: 6226 [2020-12-22 13:11:38,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:11:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6226 states. [2020-12-22 13:11:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6226 to 2613. [2020-12-22 13:11:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-12-22 13:11:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3466 transitions. [2020-12-22 13:11:38,365 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3466 transitions. Word has length 107 [2020-12-22 13:11:38,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:38,365 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3466 transitions. [2020-12-22 13:11:38,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:11:38,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3466 transitions. [2020-12-22 13:11:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 13:11:38,373 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:38,373 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:38,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 13:11:38,374 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:38,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:38,375 INFO L82 PathProgramCache]: Analyzing trace with hash -691380734, now seen corresponding path program 1 times [2020-12-22 13:11:38,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:38,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655627247] [2020-12-22 13:11:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:38,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655627247] [2020-12-22 13:11:38,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:38,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:11:38,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46768479] [2020-12-22 13:11:38,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:11:38,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:38,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:11:38,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:11:38,652 INFO L87 Difference]: Start difference. First operand 2613 states and 3466 transitions. Second operand 3 states. [2020-12-22 13:11:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:39,129 INFO L93 Difference]: Finished difference Result 6519 states and 8684 transitions. [2020-12-22 13:11:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:11:39,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-12-22 13:11:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:39,146 INFO L225 Difference]: With dead ends: 6519 [2020-12-22 13:11:39,146 INFO L226 Difference]: Without dead ends: 3924 [2020-12-22 13:11:39,157 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 13:11:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3924 states. [2020-12-22 13:11:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3924 to 2601. [2020-12-22 13:11:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2601 states. [2020-12-22 13:11:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3442 transitions. [2020-12-22 13:11:39,461 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3442 transitions. Word has length 109 [2020-12-22 13:11:39,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:39,462 INFO L481 AbstractCegarLoop]: Abstraction has 2601 states and 3442 transitions. [2020-12-22 13:11:39,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:11:39,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3442 transitions. [2020-12-22 13:11:39,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 13:11:39,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:39,468 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:39,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 13:11:39,468 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:39,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1209705982, now seen corresponding path program 1 times [2020-12-22 13:11:39,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:39,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652282037] [2020-12-22 13:11:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:39,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652282037] [2020-12-22 13:11:39,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:39,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:11:39,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553510492] [2020-12-22 13:11:39,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:11:39,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:39,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:11:39,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:11:39,695 INFO L87 Difference]: Start difference. First operand 2601 states and 3442 transitions. Second operand 4 states. [2020-12-22 13:11:40,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:40,977 INFO L93 Difference]: Finished difference Result 9205 states and 12302 transitions. [2020-12-22 13:11:40,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:11:40,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-12-22 13:11:40,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:40,998 INFO L225 Difference]: With dead ends: 9205 [2020-12-22 13:11:40,999 INFO L226 Difference]: Without dead ends: 6622 [2020-12-22 13:11:41,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:11:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6622 states. [2020-12-22 13:11:41,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6622 to 2633. [2020-12-22 13:11:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2020-12-22 13:11:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3482 transitions. [2020-12-22 13:11:41,357 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3482 transitions. Word has length 109 [2020-12-22 13:11:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:41,358 INFO L481 AbstractCegarLoop]: Abstraction has 2633 states and 3482 transitions. [2020-12-22 13:11:41,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:11:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3482 transitions. [2020-12-22 13:11:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 13:11:41,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:41,364 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:41,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 13:11:41,365 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:41,365 INFO L82 PathProgramCache]: Analyzing trace with hash -559598042, now seen corresponding path program 1 times [2020-12-22 13:11:41,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:41,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741718373] [2020-12-22 13:11:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:41,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741718373] [2020-12-22 13:11:41,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:11:41,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:11:41,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004566638] [2020-12-22 13:11:41,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:11:41,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:41,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:11:41,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:11:41,604 INFO L87 Difference]: Start difference. First operand 2633 states and 3482 transitions. Second operand 4 states. [2020-12-22 13:11:42,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:42,521 INFO L93 Difference]: Finished difference Result 6575 states and 8744 transitions. [2020-12-22 13:11:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:11:42,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-22 13:11:42,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:42,536 INFO L225 Difference]: With dead ends: 6575 [2020-12-22 13:11:42,536 INFO L226 Difference]: Without dead ends: 3960 [2020-12-22 13:11:42,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:11:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3960 states. [2020-12-22 13:11:42,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3960 to 2637. [2020-12-22 13:11:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2637 states. [2020-12-22 13:11:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3486 transitions. [2020-12-22 13:11:42,880 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3486 transitions. Word has length 111 [2020-12-22 13:11:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:42,881 INFO L481 AbstractCegarLoop]: Abstraction has 2637 states and 3486 transitions. [2020-12-22 13:11:42,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:11:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3486 transitions. [2020-12-22 13:11:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 13:11:42,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:42,887 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:42,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 13:11:42,887 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:42,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:42,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1932447274, now seen corresponding path program 1 times [2020-12-22 13:11:42,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:42,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028078262] [2020-12-22 13:11:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:43,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028078262] [2020-12-22 13:11:43,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898470622] [2020-12-22 13:11:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:11:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:43,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:11:43,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:11:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:11:44,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:11:44,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-22 13:11:44,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702257760] [2020-12-22 13:11:44,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:11:44,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:44,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:11:44,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:11:44,395 INFO L87 Difference]: Start difference. First operand 2637 states and 3486 transitions. Second operand 7 states. [2020-12-22 13:11:46,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:46,146 INFO L93 Difference]: Finished difference Result 7214 states and 9595 transitions. [2020-12-22 13:11:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:11:46,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-12-22 13:11:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:46,162 INFO L225 Difference]: With dead ends: 7214 [2020-12-22 13:11:46,162 INFO L226 Difference]: Without dead ends: 4595 [2020-12-22 13:11:46,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:11:46,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2020-12-22 13:11:46,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 2657. [2020-12-22 13:11:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2657 states. [2020-12-22 13:11:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2657 states to 2657 states and 3514 transitions. [2020-12-22 13:11:46,613 INFO L78 Accepts]: Start accepts. Automaton has 2657 states and 3514 transitions. Word has length 112 [2020-12-22 13:11:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:46,613 INFO L481 AbstractCegarLoop]: Abstraction has 2657 states and 3514 transitions. [2020-12-22 13:11:46,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:11:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2657 states and 3514 transitions. [2020-12-22 13:11:46,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 13:11:46,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:46,620 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:46,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 13:11:46,834 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:46,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1942200796, now seen corresponding path program 1 times [2020-12-22 13:11:46,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:46,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033036600] [2020-12-22 13:11:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:11:47,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033036600] [2020-12-22 13:11:47,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041346246] [2020-12-22 13:11:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:11:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:48,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 13:11:48,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:11:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:11:49,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:11:49,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-22 13:11:49,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272338320] [2020-12-22 13:11:49,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:11:49,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:49,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:11:49,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:11:49,120 INFO L87 Difference]: Start difference. First operand 2657 states and 3514 transitions. Second operand 7 states. [2020-12-22 13:11:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:50,658 INFO L93 Difference]: Finished difference Result 6639 states and 8832 transitions. [2020-12-22 13:11:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:11:50,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-12-22 13:11:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:50,673 INFO L225 Difference]: With dead ends: 6639 [2020-12-22 13:11:50,673 INFO L226 Difference]: Without dead ends: 4000 [2020-12-22 13:11:50,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:11:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2020-12-22 13:11:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 2661. [2020-12-22 13:11:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2661 states. [2020-12-22 13:11:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 3518 transitions. [2020-12-22 13:11:51,196 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 3518 transitions. Word has length 113 [2020-12-22 13:11:51,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:51,197 INFO L481 AbstractCegarLoop]: Abstraction has 2661 states and 3518 transitions. [2020-12-22 13:11:51,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:11:51,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 3518 transitions. [2020-12-22 13:11:51,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 13:11:51,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:51,204 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:11:51,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:11:51,418 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:51,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:51,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1599614420, now seen corresponding path program 2 times [2020-12-22 13:11:51,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:51,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546608466] [2020-12-22 13:11:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:11:51,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546608466] [2020-12-22 13:11:51,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859175241] [2020-12-22 13:11:51,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:11:54,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:11:54,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:11:54,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 2055 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 13:11:54,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:11:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:11:54,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:11:54,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 13:11:54,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075029611] [2020-12-22 13:11:54,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 13:11:54,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:54,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 13:11:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:11:54,273 INFO L87 Difference]: Start difference. First operand 2661 states and 3518 transitions. Second operand 9 states. [2020-12-22 13:11:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:11:55,538 INFO L93 Difference]: Finished difference Result 6647 states and 8840 transitions. [2020-12-22 13:11:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:11:55,538 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 114 [2020-12-22 13:11:55,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:11:55,550 INFO L225 Difference]: With dead ends: 6647 [2020-12-22 13:11:55,551 INFO L226 Difference]: Without dead ends: 4004 [2020-12-22 13:11:55,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:11:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2020-12-22 13:11:55,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 2665. [2020-12-22 13:11:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2665 states. [2020-12-22 13:11:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3522 transitions. [2020-12-22 13:11:55,970 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3522 transitions. Word has length 114 [2020-12-22 13:11:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:11:55,970 INFO L481 AbstractCegarLoop]: Abstraction has 2665 states and 3522 transitions. [2020-12-22 13:11:55,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 13:11:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3522 transitions. [2020-12-22 13:11:55,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 13:11:55,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:11:55,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 13:11:56,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:11:56,191 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:11:56,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:11:56,192 INFO L82 PathProgramCache]: Analyzing trace with hash -273263580, now seen corresponding path program 3 times [2020-12-22 13:11:56,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:11:56,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132882343] [2020-12-22 13:11:56,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:11:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:11:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:11:56,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132882343] [2020-12-22 13:11:56,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284788732] [2020-12-22 13:11:56,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:11:59,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 13:11:59,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:11:59,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 13:11:59,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:11:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:11:59,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:11:59,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2020-12-22 13:11:59,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300695605] [2020-12-22 13:11:59,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:11:59,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:11:59,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:11:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:11:59,289 INFO L87 Difference]: Start difference. First operand 2665 states and 3522 transitions. Second operand 6 states. [2020-12-22 13:12:02,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:02,706 INFO L93 Difference]: Finished difference Result 9209 states and 12312 transitions. [2020-12-22 13:12:02,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 13:12:02,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-12-22 13:12:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:02,733 INFO L225 Difference]: With dead ends: 9209 [2020-12-22 13:12:02,733 INFO L226 Difference]: Without dead ends: 6556 [2020-12-22 13:12:02,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-12-22 13:12:02,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2020-12-22 13:12:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 3858. [2020-12-22 13:12:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3858 states. [2020-12-22 13:12:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5075 transitions. [2020-12-22 13:12:03,460 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5075 transitions. Word has length 115 [2020-12-22 13:12:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:03,461 INFO L481 AbstractCegarLoop]: Abstraction has 3858 states and 5075 transitions. [2020-12-22 13:12:03,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:12:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5075 transitions. [2020-12-22 13:12:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-12-22 13:12:03,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:03,468 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 13:12:03,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:12:03,683 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:03,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:03,684 INFO L82 PathProgramCache]: Analyzing trace with hash -333677178, now seen corresponding path program 1 times [2020-12-22 13:12:03,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:03,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661078508] [2020-12-22 13:12:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:12:04,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661078508] [2020-12-22 13:12:04,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738733641] [2020-12-22 13:12:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:12:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:06,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 13:12:06,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:12:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:12:06,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:12:06,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-12-22 13:12:06,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782909498] [2020-12-22 13:12:06,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 13:12:06,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:06,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 13:12:06,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:12:06,264 INFO L87 Difference]: Start difference. First operand 3858 states and 5075 transitions. Second operand 11 states. [2020-12-22 13:12:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:08,135 INFO L93 Difference]: Finished difference Result 9710 states and 12857 transitions. [2020-12-22 13:12:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:12:08,138 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 125 [2020-12-22 13:12:08,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:08,156 INFO L225 Difference]: With dead ends: 9710 [2020-12-22 13:12:08,157 INFO L226 Difference]: Without dead ends: 5870 [2020-12-22 13:12:08,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-12-22 13:12:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2020-12-22 13:12:08,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 3864. [2020-12-22 13:12:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3864 states. [2020-12-22 13:12:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 5081 transitions. [2020-12-22 13:12:08,850 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 5081 transitions. Word has length 125 [2020-12-22 13:12:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:08,851 INFO L481 AbstractCegarLoop]: Abstraction has 3864 states and 5081 transitions. [2020-12-22 13:12:08,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 13:12:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 5081 transitions. [2020-12-22 13:12:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-22 13:12:08,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:08,859 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-12-22 13:12:09,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 13:12:09,075 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:09,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:09,076 INFO L82 PathProgramCache]: Analyzing trace with hash -619821770, now seen corresponding path program 2 times [2020-12-22 13:12:09,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:09,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918874317] [2020-12-22 13:12:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:12:09,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918874317] [2020-12-22 13:12:09,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397942943] [2020-12-22 13:12:09,470 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:12:11,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:12:11,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:12:11,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 13:12:11,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:12:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:12:12,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:12:12,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-12-22 13:12:12,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084548967] [2020-12-22 13:12:12,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 13:12:12,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:12,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 13:12:12,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:12:12,074 INFO L87 Difference]: Start difference. First operand 3864 states and 5081 transitions. Second operand 13 states. [2020-12-22 13:12:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:14,576 INFO L93 Difference]: Finished difference Result 9722 states and 12869 transitions. [2020-12-22 13:12:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:12:14,577 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 126 [2020-12-22 13:12:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:14,593 INFO L225 Difference]: With dead ends: 9722 [2020-12-22 13:12:14,594 INFO L226 Difference]: Without dead ends: 5876 [2020-12-22 13:12:14,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-12-22 13:12:14,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5876 states. [2020-12-22 13:12:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5876 to 3870. [2020-12-22 13:12:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3870 states. [2020-12-22 13:12:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5087 transitions. [2020-12-22 13:12:15,314 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5087 transitions. Word has length 126 [2020-12-22 13:12:15,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:15,314 INFO L481 AbstractCegarLoop]: Abstraction has 3870 states and 5087 transitions. [2020-12-22 13:12:15,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 13:12:15,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5087 transitions. [2020-12-22 13:12:15,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 13:12:15,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:15,322 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 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] [2020-12-22 13:12:15,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:12:15,536 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:15,537 INFO L82 PathProgramCache]: Analyzing trace with hash -900369530, now seen corresponding path program 3 times [2020-12-22 13:12:15,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:15,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679184672] [2020-12-22 13:12:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:12:15,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679184672] [2020-12-22 13:12:15,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113129531] [2020-12-22 13:12:15,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:12:19,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 13:12:19,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:12:19,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 13:12:19,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:12:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 13:12:19,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:12:19,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2020-12-22 13:12:19,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448810770] [2020-12-22 13:12:19,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:12:19,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:19,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:12:19,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:12:19,410 INFO L87 Difference]: Start difference. First operand 3870 states and 5087 transitions. Second operand 6 states. [2020-12-22 13:12:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:22,182 INFO L93 Difference]: Finished difference Result 15040 states and 19961 transitions. [2020-12-22 13:12:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 13:12:22,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-12-22 13:12:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:22,207 INFO L225 Difference]: With dead ends: 15040 [2020-12-22 13:12:22,207 INFO L226 Difference]: Without dead ends: 11182 [2020-12-22 13:12:22,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-12-22 13:12:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11182 states. [2020-12-22 13:12:23,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11182 to 5163. [2020-12-22 13:12:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5163 states. [2020-12-22 13:12:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 6770 transitions. [2020-12-22 13:12:23,141 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 6770 transitions. Word has length 127 [2020-12-22 13:12:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:23,141 INFO L481 AbstractCegarLoop]: Abstraction has 5163 states and 6770 transitions. [2020-12-22 13:12:23,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:12:23,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 6770 transitions. [2020-12-22 13:12:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 13:12:23,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:23,149 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 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] [2020-12-22 13:12:23,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:12:23,350 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:23,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:23,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1772603768, now seen corresponding path program 1 times [2020-12-22 13:12:23,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:23,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517611197] [2020-12-22 13:12:23,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 13:12:23,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517611197] [2020-12-22 13:12:23,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:23,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:12:23,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22771060] [2020-12-22 13:12:23,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:12:23,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:12:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:12:23,548 INFO L87 Difference]: Start difference. First operand 5163 states and 6770 transitions. Second operand 4 states. [2020-12-22 13:12:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:25,433 INFO L93 Difference]: Finished difference Result 14995 states and 19940 transitions. [2020-12-22 13:12:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:12:25,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-12-22 13:12:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:25,456 INFO L225 Difference]: With dead ends: 14995 [2020-12-22 13:12:25,456 INFO L226 Difference]: Without dead ends: 9850 [2020-12-22 13:12:25,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:12:25,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9850 states. [2020-12-22 13:12:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9850 to 5167. [2020-12-22 13:12:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5167 states. [2020-12-22 13:12:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 6774 transitions. [2020-12-22 13:12:26,241 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 6774 transitions. Word has length 132 [2020-12-22 13:12:26,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:26,242 INFO L481 AbstractCegarLoop]: Abstraction has 5167 states and 6774 transitions. [2020-12-22 13:12:26,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:12:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 6774 transitions. [2020-12-22 13:12:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 13:12:26,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:26,249 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 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] [2020-12-22 13:12:26,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 13:12:26,249 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:26,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:26,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1410891867, now seen corresponding path program 1 times [2020-12-22 13:12:26,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:26,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66117068] [2020-12-22 13:12:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:12:26,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66117068] [2020-12-22 13:12:26,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956885442] [2020-12-22 13:12:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:12:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:29,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 2315 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 13:12:29,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:12:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:12:29,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:12:29,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-12-22 13:12:29,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795752965] [2020-12-22 13:12:29,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 13:12:29,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:29,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 13:12:29,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-12-22 13:12:29,300 INFO L87 Difference]: Start difference. First operand 5167 states and 6774 transitions. Second operand 15 states. [2020-12-22 13:12:31,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:31,925 INFO L93 Difference]: Finished difference Result 12997 states and 17158 transitions. [2020-12-22 13:12:31,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:12:31,926 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 133 [2020-12-22 13:12:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:31,942 INFO L225 Difference]: With dead ends: 12997 [2020-12-22 13:12:31,943 INFO L226 Difference]: Without dead ends: 7848 [2020-12-22 13:12:31,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-12-22 13:12:31,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7848 states. [2020-12-22 13:12:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7848 to 5175. [2020-12-22 13:12:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5175 states. [2020-12-22 13:12:32,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 6782 transitions. [2020-12-22 13:12:32,803 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 6782 transitions. Word has length 133 [2020-12-22 13:12:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:32,803 INFO L481 AbstractCegarLoop]: Abstraction has 5175 states and 6782 transitions. [2020-12-22 13:12:32,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 13:12:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 6782 transitions. [2020-12-22 13:12:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 13:12:32,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:32,811 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 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] [2020-12-22 13:12:33,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 13:12:33,025 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:33,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:33,026 INFO L82 PathProgramCache]: Analyzing trace with hash -480274421, now seen corresponding path program 2 times [2020-12-22 13:12:33,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:33,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966864780] [2020-12-22 13:12:33,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:12:34,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966864780] [2020-12-22 13:12:34,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:34,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:12:34,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995570210] [2020-12-22 13:12:34,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:12:34,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:34,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:12:34,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:12:34,305 INFO L87 Difference]: Start difference. First operand 5175 states and 6782 transitions. Second operand 7 states. [2020-12-22 13:12:39,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:39,143 INFO L93 Difference]: Finished difference Result 18335 states and 24268 transitions. [2020-12-22 13:12:39,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 13:12:39,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-12-22 13:12:39,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:39,164 INFO L225 Difference]: With dead ends: 18335 [2020-12-22 13:12:39,164 INFO L226 Difference]: Without dead ends: 13172 [2020-12-22 13:12:39,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 13:12:39,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13172 states. [2020-12-22 13:12:40,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13172 to 5165. [2020-12-22 13:12:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5165 states. [2020-12-22 13:12:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 6768 transitions. [2020-12-22 13:12:40,077 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 6768 transitions. Word has length 134 [2020-12-22 13:12:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:40,077 INFO L481 AbstractCegarLoop]: Abstraction has 5165 states and 6768 transitions. [2020-12-22 13:12:40,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:12:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 6768 transitions. [2020-12-22 13:12:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 13:12:40,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:40,084 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 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] [2020-12-22 13:12:40,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 13:12:40,085 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:40,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:40,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1704578182, now seen corresponding path program 1 times [2020-12-22 13:12:40,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:40,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756256339] [2020-12-22 13:12:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:12:40,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756256339] [2020-12-22 13:12:40,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:40,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:12:40,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106609574] [2020-12-22 13:12:40,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:12:40,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:40,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:12:40,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:12:40,304 INFO L87 Difference]: Start difference. First operand 5165 states and 6768 transitions. Second operand 4 states. [2020-12-22 13:12:42,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:42,662 INFO L93 Difference]: Finished difference Result 17596 states and 23205 transitions. [2020-12-22 13:12:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:12:42,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-22 13:12:42,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:42,688 INFO L225 Difference]: With dead ends: 17596 [2020-12-22 13:12:42,688 INFO L226 Difference]: Without dead ends: 12449 [2020-12-22 13:12:42,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:12:42,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2020-12-22 13:12:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 5181. [2020-12-22 13:12:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5181 states. [2020-12-22 13:12:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 6784 transitions. [2020-12-22 13:12:43,513 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 6784 transitions. Word has length 135 [2020-12-22 13:12:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:43,513 INFO L481 AbstractCegarLoop]: Abstraction has 5181 states and 6784 transitions. [2020-12-22 13:12:43,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:12:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 6784 transitions. [2020-12-22 13:12:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 13:12:43,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:43,520 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 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] [2020-12-22 13:12:43,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 13:12:43,521 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:43,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:43,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1003513604, now seen corresponding path program 1 times [2020-12-22 13:12:43,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:43,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945044983] [2020-12-22 13:12:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:12:43,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945044983] [2020-12-22 13:12:43,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010888581] [2020-12-22 13:12:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:12:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:44,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:12:44,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:12:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:12:44,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:12:44,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-12-22 13:12:44,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514776198] [2020-12-22 13:12:44,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:12:44,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:44,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:12:44,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:12:44,910 INFO L87 Difference]: Start difference. First operand 5181 states and 6784 transitions. Second operand 4 states. [2020-12-22 13:12:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:47,596 INFO L93 Difference]: Finished difference Result 15508 states and 20310 transitions. [2020-12-22 13:12:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:12:47,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-22 13:12:47,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:47,626 INFO L225 Difference]: With dead ends: 15508 [2020-12-22 13:12:47,626 INFO L226 Difference]: Without dead ends: 15503 [2020-12-22 13:12:47,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 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 13:12:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15503 states. [2020-12-22 13:12:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15503 to 15297. [2020-12-22 13:12:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15297 states. [2020-12-22 13:12:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15297 states to 15297 states and 20088 transitions. [2020-12-22 13:12:50,017 INFO L78 Accepts]: Start accepts. Automaton has 15297 states and 20088 transitions. Word has length 135 [2020-12-22 13:12:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:50,018 INFO L481 AbstractCegarLoop]: Abstraction has 15297 states and 20088 transitions. [2020-12-22 13:12:50,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:12:50,018 INFO L276 IsEmpty]: Start isEmpty. Operand 15297 states and 20088 transitions. [2020-12-22 13:12:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 13:12:50,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:50,036 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:12:50,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 13:12:50,251 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:50,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:50,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2065265136, now seen corresponding path program 1 times [2020-12-22 13:12:50,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:50,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072585011] [2020-12-22 13:12:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:12:50,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072585011] [2020-12-22 13:12:50,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:50,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:12:50,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766199400] [2020-12-22 13:12:50,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:12:50,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:50,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:12:50,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:12:50,529 INFO L87 Difference]: Start difference. First operand 15297 states and 20088 transitions. Second operand 3 states. [2020-12-22 13:12:53,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:53,855 INFO L93 Difference]: Finished difference Result 30576 states and 40155 transitions. [2020-12-22 13:12:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:12:53,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 13:12:53,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:53,890 INFO L225 Difference]: With dead ends: 30576 [2020-12-22 13:12:53,890 INFO L226 Difference]: Without dead ends: 13194 [2020-12-22 13:12:53,920 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 13:12:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13194 states. [2020-12-22 13:12:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13194 to 13194. [2020-12-22 13:12:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13194 states. [2020-12-22 13:12:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13194 states to 13194 states and 17214 transitions. [2020-12-22 13:12:56,135 INFO L78 Accepts]: Start accepts. Automaton has 13194 states and 17214 transitions. Word has length 142 [2020-12-22 13:12:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:56,135 INFO L481 AbstractCegarLoop]: Abstraction has 13194 states and 17214 transitions. [2020-12-22 13:12:56,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:12:56,136 INFO L276 IsEmpty]: Start isEmpty. Operand 13194 states and 17214 transitions. [2020-12-22 13:12:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 13:12:56,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:56,152 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:12:56,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 13:12:56,152 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:56,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:56,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1137066958, now seen corresponding path program 1 times [2020-12-22 13:12:56,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:56,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223457054] [2020-12-22 13:12:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:12:56,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223457054] [2020-12-22 13:12:56,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:56,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:12:56,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126891183] [2020-12-22 13:12:56,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:12:56,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:56,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:12:56,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:12:56,272 INFO L87 Difference]: Start difference. First operand 13194 states and 17214 transitions. Second operand 3 states. [2020-12-22 13:12:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:57,834 INFO L93 Difference]: Finished difference Result 19404 states and 25293 transitions. [2020-12-22 13:12:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:12:57,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 13:12:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:57,849 INFO L225 Difference]: With dead ends: 19404 [2020-12-22 13:12:57,849 INFO L226 Difference]: Without dead ends: 6225 [2020-12-22 13:12:57,867 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 13:12:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6225 states. [2020-12-22 13:12:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6225 to 6225. [2020-12-22 13:12:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6225 states. [2020-12-22 13:12:58,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 8094 transitions. [2020-12-22 13:12:58,873 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 8094 transitions. Word has length 142 [2020-12-22 13:12:58,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:58,873 INFO L481 AbstractCegarLoop]: Abstraction has 6225 states and 8094 transitions. [2020-12-22 13:12:58,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:12:58,874 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 8094 transitions. [2020-12-22 13:12:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 13:12:58,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:58,880 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 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] [2020-12-22 13:12:58,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 13:12:58,880 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:58,880 INFO L82 PathProgramCache]: Analyzing trace with hash -71100869, now seen corresponding path program 1 times [2020-12-22 13:12:58,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:58,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917373808] [2020-12-22 13:12:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:12:59,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917373808] [2020-12-22 13:12:59,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:59,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:12:59,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286549533] [2020-12-22 13:12:59,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:12:59,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:59,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:12:59,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:12:59,007 INFO L87 Difference]: Start difference. First operand 6225 states and 8094 transitions. Second operand 3 states. [2020-12-22 13:13:00,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:00,550 INFO L93 Difference]: Finished difference Result 14575 states and 19074 transitions. [2020-12-22 13:13:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:13:00,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-12-22 13:13:00,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:00,569 INFO L225 Difference]: With dead ends: 14575 [2020-12-22 13:13:00,570 INFO L226 Difference]: Without dead ends: 9102 [2020-12-22 13:13:00,579 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 13:13:00,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9102 states. [2020-12-22 13:13:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9102 to 9101. [2020-12-22 13:13:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9101 states. [2020-12-22 13:13:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9101 states to 9101 states and 11938 transitions. [2020-12-22 13:13:02,070 INFO L78 Accepts]: Start accepts. Automaton has 9101 states and 11938 transitions. Word has length 147 [2020-12-22 13:13:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:02,070 INFO L481 AbstractCegarLoop]: Abstraction has 9101 states and 11938 transitions. [2020-12-22 13:13:02,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:13:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 9101 states and 11938 transitions. [2020-12-22 13:13:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 13:13:02,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:02,078 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 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] [2020-12-22 13:13:02,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 13:13:02,078 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:02,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:02,078 INFO L82 PathProgramCache]: Analyzing trace with hash 227066871, now seen corresponding path program 1 times [2020-12-22 13:13:02,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:02,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29017587] [2020-12-22 13:13:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:13:02,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29017587] [2020-12-22 13:13:02,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:02,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:13:02,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378052412] [2020-12-22 13:13:02,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:13:02,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:02,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:13:02,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:13:02,342 INFO L87 Difference]: Start difference. First operand 9101 states and 11938 transitions. Second operand 5 states. [2020-12-22 13:13:08,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:08,832 INFO L93 Difference]: Finished difference Result 37863 states and 50384 transitions. [2020-12-22 13:13:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:13:08,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-12-22 13:13:08,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:08,880 INFO L225 Difference]: With dead ends: 37863 [2020-12-22 13:13:08,880 INFO L226 Difference]: Without dead ends: 29514 [2020-12-22 13:13:08,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:13:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29514 states. [2020-12-22 13:13:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29514 to 9110. [2020-12-22 13:13:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9110 states. [2020-12-22 13:13:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9110 states to 9110 states and 11947 transitions. [2020-12-22 13:13:10,507 INFO L78 Accepts]: Start accepts. Automaton has 9110 states and 11947 transitions. Word has length 147 [2020-12-22 13:13:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:10,507 INFO L481 AbstractCegarLoop]: Abstraction has 9110 states and 11947 transitions. [2020-12-22 13:13:10,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:13:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 9110 states and 11947 transitions. [2020-12-22 13:13:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 13:13:10,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:10,517 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 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] [2020-12-22 13:13:10,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 13:13:10,517 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:10,518 INFO L82 PathProgramCache]: Analyzing trace with hash -658321445, now seen corresponding path program 1 times [2020-12-22 13:13:10,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:10,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385777810] [2020-12-22 13:13:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:13:10,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385777810] [2020-12-22 13:13:10,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:10,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:13:10,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184996863] [2020-12-22 13:13:10,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:13:10,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:10,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:13:10,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:13:10,799 INFO L87 Difference]: Start difference. First operand 9110 states and 11947 transitions. Second operand 5 states. [2020-12-22 13:13:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:16,202 INFO L93 Difference]: Finished difference Result 31378 states and 41586 transitions. [2020-12-22 13:13:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:13:16,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-12-22 13:13:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:16,246 INFO L225 Difference]: With dead ends: 31378 [2020-12-22 13:13:16,246 INFO L226 Difference]: Without dead ends: 23020 [2020-12-22 13:13:16,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:13:16,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23020 states. [2020-12-22 13:13:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23020 to 9119. [2020-12-22 13:13:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9119 states. [2020-12-22 13:13:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9119 states to 9119 states and 11956 transitions. [2020-12-22 13:13:17,796 INFO L78 Accepts]: Start accepts. Automaton has 9119 states and 11956 transitions. Word has length 149 [2020-12-22 13:13:17,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:17,796 INFO L481 AbstractCegarLoop]: Abstraction has 9119 states and 11956 transitions. [2020-12-22 13:13:17,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:13:17,796 INFO L276 IsEmpty]: Start isEmpty. Operand 9119 states and 11956 transitions. [2020-12-22 13:13:17,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 13:13:17,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:17,803 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 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] [2020-12-22 13:13:17,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 13:13:17,804 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:17,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:17,804 INFO L82 PathProgramCache]: Analyzing trace with hash -46669281, now seen corresponding path program 1 times [2020-12-22 13:13:17,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:17,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133724217] [2020-12-22 13:13:17,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:18,973 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:13:18,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133724217] [2020-12-22 13:13:18,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:18,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 13:13:18,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217491437] [2020-12-22 13:13:18,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 13:13:18,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:18,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 13:13:18,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:13:18,976 INFO L87 Difference]: Start difference. First operand 9119 states and 11956 transitions. Second operand 9 states. [2020-12-22 13:13:24,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:24,491 INFO L93 Difference]: Finished difference Result 19107 states and 25199 transitions. [2020-12-22 13:13:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 13:13:24,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-12-22 13:13:24,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:24,511 INFO L225 Difference]: With dead ends: 19107 [2020-12-22 13:13:24,512 INFO L226 Difference]: Without dead ends: 10740 [2020-12-22 13:13:24,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-12-22 13:13:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10740 states. [2020-12-22 13:13:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10740 to 9893. [2020-12-22 13:13:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9893 states. [2020-12-22 13:13:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9893 states to 9893 states and 13041 transitions. [2020-12-22 13:13:26,088 INFO L78 Accepts]: Start accepts. Automaton has 9893 states and 13041 transitions. Word has length 151 [2020-12-22 13:13:26,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:26,088 INFO L481 AbstractCegarLoop]: Abstraction has 9893 states and 13041 transitions. [2020-12-22 13:13:26,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 13:13:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 9893 states and 13041 transitions. [2020-12-22 13:13:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 13:13:26,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:26,097 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 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] [2020-12-22 13:13:26,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 13:13:26,097 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:26,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:26,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1429419044, now seen corresponding path program 1 times [2020-12-22 13:13:26,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:26,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355326508] [2020-12-22 13:13:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:13:27,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355326508] [2020-12-22 13:13:27,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793638074] [2020-12-22 13:13:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:14:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:27,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 2645 conjuncts, 127 conjunts are in the unsatisfiable core [2020-12-22 13:14:27,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:14:28,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,552 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2020-12-22 13:14:28,554 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 13:14:28,599 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:14:28,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,621 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2020-12-22 13:14:28,623 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 13:14:28,653 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:14:28,662 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 13:14:28,662 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:71, output treesize:42 [2020-12-22 13:14:28,747 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_240|], 6=[|v_#memory_$Pointer$.base_240|]} [2020-12-22 13:14:28,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,757 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 13:14:28,758 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 13:14:28,778 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:14:28,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:28,786 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2020-12-22 13:14:28,789 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 13:14:28,805 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:14:28,808 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 13:14:28,809 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:58, output treesize:34 [2020-12-22 13:14:28,974 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-12-22 13:14:28,975 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 13:14:28,993 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:14:28,995 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 13:14:28,995 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:52, output treesize:37 [2020-12-22 13:14:29,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 13:14:29,201 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:14:29,202 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2020-12-22 13:14:29,204 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 13:14:29,212 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:14:29,214 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 13:14:29,215 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:11 [2020-12-22 13:14:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 13:14:29,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:14:29,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [9] total 33 [2020-12-22 13:14:29,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827387585] [2020-12-22 13:14:29,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 13:14:29,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:29,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 13:14:29,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 13:14:29,428 INFO L87 Difference]: Start difference. First operand 9893 states and 13041 transitions. Second operand 25 states. [2020-12-22 13:14:44,011 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-12-22 13:14:44,673 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 13:14:45,436 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-12-22 13:14:45,954 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 13:14:50,291 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-12-22 13:14:53,042 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64