/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:46:14,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:46:14,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:46:14,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:46:14,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:46:14,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:46:14,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:46:14,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:46:14,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:46:14,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:46:14,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:46:14,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:46:14,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:46:14,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:46:14,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:46:14,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:46:14,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:46:14,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:46:14,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:46:14,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:46:14,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:46:14,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:46:14,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:46:14,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:46:14,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:46:14,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:46:14,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:46:14,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:46:14,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:46:14,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:46:14,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:46:14,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:46:14,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:46:14,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:46:14,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:46:14,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:46:14,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 21:46:14,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:46:14,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:46:14,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:46:14,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:46:14,830 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:46:14,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:46:14,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:46:14,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:46:14,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:46:14,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:46:14,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:46:14,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:46:14,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:46:14,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:46:14,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:46:14,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:46:14,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:46:14,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:46:14,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:46:14,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:46:14,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:46:14,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:46:14,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:46:14,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:46:14,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:46:14,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:46:14,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:46:14,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:46:14,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:46:14,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:46:15,130 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:46:15,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:46:15,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:46:15,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:46:15,153 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:46:15,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-19 21:46:15,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20a6b6a2/8afef5d26155426b87e9ce22e935a9a1/FLAGcb6aa578f [2020-07-19 21:46:15,755 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:46:15,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-19 21:46:15,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20a6b6a2/8afef5d26155426b87e9ce22e935a9a1/FLAGcb6aa578f [2020-07-19 21:46:16,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20a6b6a2/8afef5d26155426b87e9ce22e935a9a1 [2020-07-19 21:46:16,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:46:16,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:46:16,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:46:16,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:46:16,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:46:16,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:46:16" (1/1) ... [2020-07-19 21:46:16,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1481941f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16, skipping insertion in model container [2020-07-19 21:46:16,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:46:16" (1/1) ... [2020-07-19 21:46:16,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:46:16,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:46:16,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:46:16,381 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:46:16,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:46:16,531 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:46:16,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16 WrapperNode [2020-07-19 21:46:16,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:46:16,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:46:16,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:46:16,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:46:16,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16" (1/1) ... [2020-07-19 21:46:16,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16" (1/1) ... [2020-07-19 21:46:16,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16" (1/1) ... [2020-07-19 21:46:16,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16" (1/1) ... [2020-07-19 21:46:16,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16" (1/1) ... [2020-07-19 21:46:16,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16" (1/1) ... [2020-07-19 21:46:16,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16" (1/1) ... [2020-07-19 21:46:16,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:46:16,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:46:16,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:46:16,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:46:16,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16" (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 [2020-07-19 21:46:16,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:46:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:46:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:46:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-07-19 21:46:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-07-19 21:46:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:46:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:46:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:46:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-07-19 21:46:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-07-19 21:46:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-07-19 21:46:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-07-19 21:46:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-07-19 21:46:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-07-19 21:46:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-07-19 21:46:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-07-19 21:46:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-19 21:46:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-07-19 21:46:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-19 21:46:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-07-19 21:46:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-07-19 21:46:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-19 21:46:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-07-19 21:46:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-07-19 21:46:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-07-19 21:46:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-07-19 21:46:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-07-19 21:46:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-07-19 21:46:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-07-19 21:46:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-07-19 21:46:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-07-19 21:46:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-07-19 21:46:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-07-19 21:46:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-07-19 21:46:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:46:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:46:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:46:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:46:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:46:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:46:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:46:17,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:46:17,099 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-19 21:46:17,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:46:17 BoogieIcfgContainer [2020-07-19 21:46:17,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:46:17,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:46:17,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:46:17,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:46:17,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:46:16" (1/3) ... [2020-07-19 21:46:17,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc3b805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:46:17, skipping insertion in model container [2020-07-19 21:46:17,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:16" (2/3) ... [2020-07-19 21:46:17,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc3b805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:46:17, skipping insertion in model container [2020-07-19 21:46:17,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:46:17" (3/3) ... [2020-07-19 21:46:17,113 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-19 21:46:17,124 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:46:17,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:46:17,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:46:17,170 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:46:17,170 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:46:17,171 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:46:17,171 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:46:17,171 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:46:17,171 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:46:17,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:46:17,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:46:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-19 21:46:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-19 21:46:17,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:17,197 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] [2020-07-19 21:46:17,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:17,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:17,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-07-19 21:46:17,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:17,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341856534] [2020-07-19 21:46:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:17,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341856534] [2020-07-19 21:46:17,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:17,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:46:17,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660789872] [2020-07-19 21:46:17,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:46:17,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:17,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:46:17,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:46:17,468 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-07-19 21:46:17,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:17,619 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-07-19 21:46:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:46:17,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-19 21:46:17,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:17,630 INFO L225 Difference]: With dead ends: 93 [2020-07-19 21:46:17,631 INFO L226 Difference]: Without dead ends: 43 [2020-07-19 21:46:17,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:46:17,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-19 21:46:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-19 21:46:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-19 21:46:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-07-19 21:46:17,679 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-07-19 21:46:17,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:17,679 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-07-19 21:46:17,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:46:17,680 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-07-19 21:46:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-19 21:46:17,681 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:17,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:17,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:46:17,682 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:17,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:17,683 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-07-19 21:46:17,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:17,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719555621] [2020-07-19 21:46:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:17,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719555621] [2020-07-19 21:46:17,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:17,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:46:17,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539073172] [2020-07-19 21:46:17,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:46:17,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:17,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:46:17,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:46:17,770 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2020-07-19 21:46:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:17,888 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-07-19 21:46:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:46:17,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-07-19 21:46:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:17,891 INFO L225 Difference]: With dead ends: 78 [2020-07-19 21:46:17,891 INFO L226 Difference]: Without dead ends: 44 [2020-07-19 21:46:17,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:46:17,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-19 21:46:17,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-19 21:46:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-19 21:46:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-19 21:46:17,902 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-07-19 21:46:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:17,903 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-19 21:46:17,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:46:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-19 21:46:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-19 21:46:17,905 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:17,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:17,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:46:17,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:17,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:17,906 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-07-19 21:46:17,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:17,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474316905] [2020-07-19 21:46:17,907 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:18,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474316905] [2020-07-19 21:46:18,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:18,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 21:46:18,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049226386] [2020-07-19 21:46:18,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 21:46:18,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:18,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 21:46:18,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:46:18,070 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 8 states. [2020-07-19 21:46:18,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:18,446 INFO L93 Difference]: Finished difference Result 140 states and 187 transitions. [2020-07-19 21:46:18,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 21:46:18,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-07-19 21:46:18,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:18,451 INFO L225 Difference]: With dead ends: 140 [2020-07-19 21:46:18,452 INFO L226 Difference]: Without dead ends: 91 [2020-07-19 21:46:18,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-07-19 21:46:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-19 21:46:18,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-07-19 21:46:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-19 21:46:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-07-19 21:46:18,472 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 33 [2020-07-19 21:46:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:18,473 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-07-19 21:46:18,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 21:46:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-07-19 21:46:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-19 21:46:18,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:18,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:18,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:46:18,475 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:18,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:18,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1743223006, now seen corresponding path program 1 times [2020-07-19 21:46:18,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:18,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020295328] [2020-07-19 21:46:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:18,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020295328] [2020-07-19 21:46:18,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:18,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 21:46:18,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538701478] [2020-07-19 21:46:18,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 21:46:18,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:18,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 21:46:18,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:46:18,631 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 7 states. [2020-07-19 21:46:18,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:18,862 INFO L93 Difference]: Finished difference Result 136 states and 180 transitions. [2020-07-19 21:46:18,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 21:46:18,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-07-19 21:46:18,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:18,864 INFO L225 Difference]: With dead ends: 136 [2020-07-19 21:46:18,864 INFO L226 Difference]: Without dead ends: 92 [2020-07-19 21:46:18,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:46:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-19 21:46:18,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2020-07-19 21:46:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-19 21:46:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-07-19 21:46:18,877 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 33 [2020-07-19 21:46:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:18,878 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-07-19 21:46:18,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 21:46:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-07-19 21:46:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-19 21:46:18,879 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:18,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:18,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 21:46:18,880 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:18,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:18,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1042158428, now seen corresponding path program 1 times [2020-07-19 21:46:18,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:18,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920123687] [2020-07-19 21:46:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:18,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920123687] [2020-07-19 21:46:18,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:18,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 21:46:18,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980165019] [2020-07-19 21:46:18,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 21:46:18,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:18,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 21:46:18,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:46:18,973 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 6 states. [2020-07-19 21:46:19,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:19,183 INFO L93 Difference]: Finished difference Result 138 states and 179 transitions. [2020-07-19 21:46:19,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:46:19,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-07-19 21:46:19,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:19,185 INFO L225 Difference]: With dead ends: 138 [2020-07-19 21:46:19,186 INFO L226 Difference]: Without dead ends: 89 [2020-07-19 21:46:19,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:46:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-19 21:46:19,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-07-19 21:46:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-19 21:46:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-07-19 21:46:19,196 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 33 [2020-07-19 21:46:19,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:19,197 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-07-19 21:46:19,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 21:46:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-07-19 21:46:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-19 21:46:19,198 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:19,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:19,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 21:46:19,199 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:19,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash -151257089, now seen corresponding path program 1 times [2020-07-19 21:46:19,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:19,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374474414] [2020-07-19 21:46:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:19,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374474414] [2020-07-19 21:46:19,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:19,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:46:19,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973527400] [2020-07-19 21:46:19,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:46:19,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:19,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:46:19,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:46:19,266 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 5 states. [2020-07-19 21:46:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:19,363 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2020-07-19 21:46:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 21:46:19,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-07-19 21:46:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:19,365 INFO L225 Difference]: With dead ends: 124 [2020-07-19 21:46:19,366 INFO L226 Difference]: Without dead ends: 89 [2020-07-19 21:46:19,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:46:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-19 21:46:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-07-19 21:46:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-19 21:46:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-07-19 21:46:19,375 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 35 [2020-07-19 21:46:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:19,376 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-07-19 21:46:19,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:46:19,376 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-07-19 21:46:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-19 21:46:19,377 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:19,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:19,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 21:46:19,378 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:19,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1172325443, now seen corresponding path program 1 times [2020-07-19 21:46:19,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:19,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057593006] [2020-07-19 21:46:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:19,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057593006] [2020-07-19 21:46:19,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:19,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 21:46:19,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943001780] [2020-07-19 21:46:19,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 21:46:19,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:19,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 21:46:19,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:46:19,443 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 7 states. [2020-07-19 21:46:19,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:19,577 INFO L93 Difference]: Finished difference Result 147 states and 187 transitions. [2020-07-19 21:46:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 21:46:19,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-07-19 21:46:19,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:19,579 INFO L225 Difference]: With dead ends: 147 [2020-07-19 21:46:19,579 INFO L226 Difference]: Without dead ends: 89 [2020-07-19 21:46:19,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-19 21:46:19,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-19 21:46:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-07-19 21:46:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-19 21:46:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-07-19 21:46:19,587 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 35 [2020-07-19 21:46:19,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:19,587 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-07-19 21:46:19,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 21:46:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-07-19 21:46:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-19 21:46:19,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:19,589 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] [2020-07-19 21:46:19,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 21:46:19,589 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:19,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1310821647, now seen corresponding path program 1 times [2020-07-19 21:46:19,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:19,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462275249] [2020-07-19 21:46:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 21:46:19,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462275249] [2020-07-19 21:46:19,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:19,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 21:46:19,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728914471] [2020-07-19 21:46:19,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 21:46:19,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:19,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 21:46:19,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:46:19,690 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 8 states. [2020-07-19 21:46:19,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:19,938 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2020-07-19 21:46:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 21:46:19,939 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-07-19 21:46:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:19,940 INFO L225 Difference]: With dead ends: 107 [2020-07-19 21:46:19,940 INFO L226 Difference]: Without dead ends: 105 [2020-07-19 21:46:19,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-19 21:46:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-19 21:46:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-07-19 21:46:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-19 21:46:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-07-19 21:46:19,949 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 38 [2020-07-19 21:46:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:19,950 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-07-19 21:46:19,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 21:46:19,950 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-07-19 21:46:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-19 21:46:19,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:19,952 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] [2020-07-19 21:46:19,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-19 21:46:19,953 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:19,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:19,953 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-07-19 21:46:19,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:19,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358549296] [2020-07-19 21:46:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:20,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358549296] [2020-07-19 21:46:20,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303896365] [2020-07-19 21:46:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 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 [2020-07-19 21:46:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:20,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-19 21:46:20,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:46:20,177 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 21:46:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:20,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:46:20,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-07-19 21:46:20,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022868092] [2020-07-19 21:46:20,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 21:46:20,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:20,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 21:46:20,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:46:20,186 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand 8 states. [2020-07-19 21:46:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:20,390 INFO L93 Difference]: Finished difference Result 209 states and 263 transitions. [2020-07-19 21:46:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 21:46:20,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-07-19 21:46:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:20,394 INFO L225 Difference]: With dead ends: 209 [2020-07-19 21:46:20,394 INFO L226 Difference]: Without dead ends: 136 [2020-07-19 21:46:20,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-19 21:46:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-19 21:46:20,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 106. [2020-07-19 21:46:20,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-19 21:46:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2020-07-19 21:46:20,404 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 40 [2020-07-19 21:46:20,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:20,405 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2020-07-19 21:46:20,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 21:46:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2020-07-19 21:46:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 21:46:20,407 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:20,407 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] [2020-07-19 21:46:20,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-07-19 21:46:20,621 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:20,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-07-19 21:46:20,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:20,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759823356] [2020-07-19 21:46:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:20,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759823356] [2020-07-19 21:46:20,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454958283] [2020-07-19 21:46:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 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 [2020-07-19 21:46:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:20,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-19 21:46:20,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:46:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:20,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:46:20,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2020-07-19 21:46:20,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577547218] [2020-07-19 21:46:20,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-19 21:46:20,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:20,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-19 21:46:20,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-07-19 21:46:20,996 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand 19 states. [2020-07-19 21:46:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:21,669 INFO L93 Difference]: Finished difference Result 240 states and 302 transitions. [2020-07-19 21:46:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 21:46:21,670 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-07-19 21:46:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:21,672 INFO L225 Difference]: With dead ends: 240 [2020-07-19 21:46:21,672 INFO L226 Difference]: Without dead ends: 189 [2020-07-19 21:46:21,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-07-19 21:46:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-07-19 21:46:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 127. [2020-07-19 21:46:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-19 21:46:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2020-07-19 21:46:21,690 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 45 [2020-07-19 21:46:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:21,693 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2020-07-19 21:46:21,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-19 21:46:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-07-19 21:46:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 21:46:21,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:21,701 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] [2020-07-19 21:46:21,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-19 21:46:21,915 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:21,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:21,915 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-07-19 21:46:21,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:21,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579380776] [2020-07-19 21:46:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:22,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579380776] [2020-07-19 21:46:22,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164623498] [2020-07-19 21:46:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 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 [2020-07-19 21:46:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:22,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-19 21:46:22,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:46:22,229 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 21:46:22,231 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 21:46:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:22,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:46:22,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2020-07-19 21:46:22,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575188860] [2020-07-19 21:46:22,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-19 21:46:22,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:22,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-19 21:46:22,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-07-19 21:46:22,271 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand 19 states. [2020-07-19 21:46:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:22,816 INFO L93 Difference]: Finished difference Result 212 states and 267 transitions. [2020-07-19 21:46:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-19 21:46:22,817 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-07-19 21:46:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:22,820 INFO L225 Difference]: With dead ends: 212 [2020-07-19 21:46:22,820 INFO L226 Difference]: Without dead ends: 210 [2020-07-19 21:46:22,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-07-19 21:46:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-07-19 21:46:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 146. [2020-07-19 21:46:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-19 21:46:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2020-07-19 21:46:22,832 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 45 [2020-07-19 21:46:22,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:22,832 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2020-07-19 21:46:22,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-19 21:46:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2020-07-19 21:46:22,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 21:46:22,834 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:22,834 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] [2020-07-19 21:46:23,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-07-19 21:46:23,047 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:23,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:23,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-07-19 21:46:23,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:23,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101609435] [2020-07-19 21:46:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dbb0435 [2020-07-19 21:46:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:46:23,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:46:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:46:23,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:46:23,121 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:46:23,122 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:46:23,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-19 21:46:23,174 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,178 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,184 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,191 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,192 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,192 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,193 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,197 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,197 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,198 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,198 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-19 21:46:23,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:46:23 BoogieIcfgContainer [2020-07-19 21:46:23,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:46:23,231 INFO L168 Benchmark]: Toolchain (without parser) took 7138.62 ms. Allocated memory was 136.8 MB in the beginning and 291.0 MB in the end (delta: 154.1 MB). Free memory was 101.5 MB in the beginning and 193.5 MB in the end (delta: -91.9 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:23,232 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:46:23,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.05 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 101.1 MB in the beginning and 179.0 MB in the end (delta: -77.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:23,233 INFO L168 Benchmark]: Boogie Preprocessor took 51.84 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 176.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:23,234 INFO L168 Benchmark]: RCFGBuilder took 518.70 ms. Allocated memory is still 201.3 MB. Free memory was 176.9 MB in the beginning and 149.7 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:23,235 INFO L168 Benchmark]: TraceAbstraction took 6116.49 ms. Allocated memory was 201.3 MB in the beginning and 291.0 MB in the end (delta: 89.7 MB). Free memory was 149.0 MB in the beginning and 193.5 MB in the end (delta: -44.4 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:23,244 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 441.05 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 101.1 MB in the beginning and 179.0 MB in the end (delta: -77.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.84 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 176.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 518.70 ms. Allocated memory is still 201.3 MB. Free memory was 176.9 MB in the beginning and 149.7 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6116.49 ms. Allocated memory was 201.3 MB in the beginning and 291.0 MB in the end (delta: 89.7 MB). Free memory was 149.0 MB in the beginning and 193.5 MB in the end (delta: -44.4 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] char A [2 + 2 + 4 +1]; [L75] A[2 + 2 + 4] = 0 VAL [A={4:0}] [L76] CALL parse_expression_list (A) VAL [str={4:0}] [L48] int start=0, i=-1, j=-1; [L49] char str2[2]; VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L50] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L52] i++ [L53] str[i] [L54] case 0: VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-1] [L69] EXPR str[i] VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-1] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-2] [L69] EXPR str[i] VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-2] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=-1, str[start]=-1] [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L56] EXPR str[start] VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=-1] [L56] COND FALSE !(str[start] == '"') [L57] j = i-1 VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2, str[j]=-2] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2, str[j]=-2] [L58] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L59] (0 < j) && (str[j] == '"') [L59] EXPR str[j] [L59] (0 < j) && (str[j] == '"') VAL [(0 < j) && (str[j] == '"')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2] [L59] COND FALSE !((0 < j) && (str[j] == '"')) [L60] COND TRUE start<=j VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L61] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={3:0}, src={4:0}] [L30] return strncpy(dest,src,n); [L61] RET r_strncpy(str2, str+start, j-start+1) VAL [i=2, j=1, r_strncpy(str2, str+start, j-start+1)={35:37}, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L62] CALL __VERIFIER_assert(j - start + 1 < 2) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.9s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 532 SDtfs, 954 SDslu, 1451 SDs, 0 SdLazy, 2054 SolverSat, 255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 278 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 219 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 574 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 68435 SizeOfPredicates, 8 NumberOfNonLiveVariables, 482 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 2/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...