/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:20:53,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:20:53,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:20:53,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:20:53,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:20:53,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:20:53,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:20:53,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:20:53,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:20:53,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:20:53,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:20:53,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:20:53,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:20:53,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:20:53,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:20:53,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:20:53,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:20:53,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:20:53,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:20:53,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:20:53,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:20:53,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:20:53,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:20:53,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:20:53,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 18:20:53,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 18:20:53,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 18:20:53,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 18:20:53,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 18:20:53,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 18:20:53,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 18:20:53,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 18:20:53,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 18:20:53,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 18:20:53,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 18:20:53,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 18:20:53,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 18:20:53,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 18:20:53,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:20:53,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:20:53,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:20:53,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:20:53,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:20:53,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:20:53,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:20:53,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:20:53,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:20:53,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:20:53,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:20:53,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:20:53,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:20:53,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:20:53,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:20:53,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:20:53,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:20:53,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:20:53,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:20:53,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:20:53,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:20:53,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:20:53,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:20:53,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:20:53,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:20:53,451 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:20:53,451 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:20:53,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:20:53,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:20:53,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:20:53,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:20:53,743 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:20:53,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2021-05-02 18:20:53,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002a76926/b59936e0b4d6409593d4927f0b2464cb/FLAG94fef71d5 [2021-05-02 18:20:54,178 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:20:54,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2021-05-02 18:20:54,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002a76926/b59936e0b4d6409593d4927f0b2464cb/FLAG94fef71d5 [2021-05-02 18:20:54,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002a76926/b59936e0b4d6409593d4927f0b2464cb [2021-05-02 18:20:54,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:20:54,215 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:20:54,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:20:54,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:20:54,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:20:54,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:20:54" (1/1) ... [2021-05-02 18:20:54,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c2acb53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54, skipping insertion in model container [2021-05-02 18:20:54,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:20:54" (1/1) ... [2021-05-02 18:20:54,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:20:54,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:20:54,359 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i[895,908] [2021-05-02 18:20:54,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:20:54,375 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:20:54,427 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i[895,908] [2021-05-02 18:20:54,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:20:54,443 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:20:54,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54 WrapperNode [2021-05-02 18:20:54,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:20:54,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:20:54,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:20:54,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:20:54,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54" (1/1) ... [2021-05-02 18:20:54,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54" (1/1) ... [2021-05-02 18:20:54,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54" (1/1) ... [2021-05-02 18:20:54,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54" (1/1) ... [2021-05-02 18:20:54,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54" (1/1) ... [2021-05-02 18:20:54,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54" (1/1) ... [2021-05-02 18:20:54,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54" (1/1) ... [2021-05-02 18:20:54,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:20:54,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:20:54,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:20:54,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:20:54,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54" (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 [2021-05-02 18:20:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:20:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:20:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:20:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:20:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:20:54,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:20:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:20:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:20:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 18:20:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 18:20:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:20:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:20:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:20:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:20:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:20:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:20:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:20:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:20:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:20:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:20:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:20:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:20:54,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:20:54,826 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:20:54,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:20:54 BoogieIcfgContainer [2021-05-02 18:20:54,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:20:54,827 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:20:54,827 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:20:54,828 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:20:54,842 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:20:54" (1/1) ... [2021-05-02 18:20:54,888 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= v_main_~x~0_4 0)) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_4} AuxVars[] AssignedVars[] [2021-05-02 18:20:54,909 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 79.7 percent of original size [2021-05-02 18:20:54,978 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 79.7 percent of original size 55 [2021-05-02 18:20:54,997 INFO L1112 elerationTransformer]: Accelerated Formula: (and (= (+ v_main_~x~0_3 1) v_main_~x~0_4) (= v_main_~y~0_4 (+ v_main_~y~0_3 1)) (not (= v_main_~x~0_4 0))) InVars {main_~x~0=v_main_~x~0_4, main_~y~0=v_main_~y~0_4} OutVars{main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_3, main_#t~post5=|v_main_#t~post5_1|, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post5, main_#t~post6] with Formula: (or (and (= v_main_~y~0_4 (+ v_itFin_1 v_main_~y~0_3)) (< 0 v_itFin_1) (= v_main_~x~0_4 (+ v_itFin_1 v_main_~x~0_3)) (= v_main_~x~0_4 v_itFin_1)) (and (= v_main_~y~0_4 v_main_~y~0_3) (= v_itFin_1 0) (= v_main_~x~0_4 v_main_~x~0_3) (= |v_main_#t~post6_3| |v_main_#t~post6_1|) (= v_main_~x~0_4 0) (= |v_main_#t~post5_3| |v_main_#t~post5_1|))) InVars {main_~y~0=v_main_~y~0_4, main_#t~post5=|v_main_#t~post5_3|, main_~x~0=v_main_~x~0_4, main_#t~post6=|v_main_#t~post6_3|} OutVars{main_~y~0=v_main_~y~0_3, main_#t~post5=|v_main_#t~post5_1|, main_~x~0=v_main_~x~0_3, main_#t~post6=|v_main_#t~post6_1|} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_~y~0, main_#t~post5, main_#t~post6] [2021-05-02 18:20:55,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:20:55 BasicIcfg [2021-05-02 18:20:55,009 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:20:55,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:20:55,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:20:55,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:20:55,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:20:54" (1/4) ... [2021-05-02 18:20:55,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104d1a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:20:55, skipping insertion in model container [2021-05-02 18:20:55,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:54" (2/4) ... [2021-05-02 18:20:55,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104d1a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:20:55, skipping insertion in model container [2021-05-02 18:20:55,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:20:54" (3/4) ... [2021-05-02 18:20:55,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104d1a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:20:55, skipping insertion in model container [2021-05-02 18:20:55,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:20:55" (4/4) ... [2021-05-02 18:20:55,014 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.iJordan [2021-05-02 18:20:55,022 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:20:55,025 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:20:55,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:20:55,059 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:20:55,059 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:20:55,060 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:20:55,060 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:20:55,060 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:20:55,060 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:20:55,060 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:20:55,060 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:20:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:20:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:20:55,076 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:55,076 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:55,076 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:55,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:55,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1752834070, now seen corresponding path program 1 times [2021-05-02 18:20:55,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:55,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620225064] [2021-05-02 18:20:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:55,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:55,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:55,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620225064] [2021-05-02 18:20:55,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620225064] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:20:55,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:20:55,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:20:55,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787735477] [2021-05-02 18:20:55,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:20:55,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:55,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:20:55,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:20:55,276 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:55,307 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-02 18:20:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:20:55,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 18:20:55,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:55,314 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:20:55,314 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 18:20:55,314 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:20:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 18:20:55,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 18:20:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 18:20:55,332 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2021-05-02 18:20:55,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:55,333 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 18:20:55,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:55,333 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 18:20:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:20:55,334 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:55,334 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:55,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:20:55,334 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:55,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1781463221, now seen corresponding path program 1 times [2021-05-02 18:20:55,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:55,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955649563] [2021-05-02 18:20:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:55,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:55,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955649563] [2021-05-02 18:20:55,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955649563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:20:55,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:20:55,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 18:20:55,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86871559] [2021-05-02 18:20:55,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:20:55,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:55,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:20:55,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:20:55,537 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:55,774 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-05-02 18:20:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:20:55,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 18:20:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:55,775 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:20:55,775 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 18:20:55,775 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 266.3ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-02 18:20:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 18:20:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 18:20:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 18:20:55,777 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-02 18:20:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:55,778 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 18:20:55,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 18:20:55,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 18:20:55,778 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:55,778 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:55,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:20:55,778 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:55,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:55,779 INFO L82 PathProgramCache]: Analyzing trace with hash 219122817, now seen corresponding path program 1 times [2021-05-02 18:20:55,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:55,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965183019] [2021-05-02 18:20:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:55,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:55,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:55,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965183019] [2021-05-02 18:20:55,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965183019] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:55,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793454612] [2021-05-02 18:20:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:20:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:55,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:20:55,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:20:56,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:56,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793454612] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:56,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:20:56,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-05-02 18:20:56,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925551762] [2021-05-02 18:20:56,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:20:56,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:56,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:20:56,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:20:56,066 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:56,199 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-02 18:20:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:20:56,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 18:20:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:56,200 INFO L225 Difference]: With dead ends: 20 [2021-05-02 18:20:56,200 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 18:20:56,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 170.5ms TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:20:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 18:20:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 18:20:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 18:20:56,207 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-05-02 18:20:56,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:56,207 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 18:20:56,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:56,207 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 18:20:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:20:56,208 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:56,208 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:56,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 18:20:56,426 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:56,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:56,427 INFO L82 PathProgramCache]: Analyzing trace with hash -968789451, now seen corresponding path program 2 times [2021-05-02 18:20:56,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:56,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820146557] [2021-05-02 18:20:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:56,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:56,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:56,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820146557] [2021-05-02 18:20:56,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820146557] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:56,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764890482] [2021-05-02 18:20:56,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:20:56,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:20:56,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:20:56,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:20:56,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:20:56,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:56,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764890482] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:56,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:20:56,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2021-05-02 18:20:56,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100120328] [2021-05-02 18:20:56,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:20:56,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:56,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:20:56,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:20:56,804 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:56,938 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-05-02 18:20:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:20:56,938 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 18:20:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:56,938 INFO L225 Difference]: With dead ends: 14 [2021-05-02 18:20:56,938 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:20:56,939 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 249.4ms TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:20:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:20:56,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:20:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 18:20:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:20:56,939 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-05-02 18:20:56,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:56,939 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:20:56,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:56,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:20:56,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:20:57,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:20:57,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:20:57 BasicIcfg [2021-05-02 18:20:57,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:20:57,158 INFO L168 Benchmark]: Toolchain (without parser) took 2943.44 ms. Allocated memory is still 166.7 MB. Free memory was 131.9 MB in the beginning and 65.3 MB in the end (delta: 66.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:57,158 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 166.7 MB. Free memory is still 148.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:20:57,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.21 ms. Allocated memory is still 166.7 MB. Free memory was 131.7 MB in the beginning and 150.0 MB in the end (delta: -18.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:57,159 INFO L168 Benchmark]: Boogie Preprocessor took 36.40 ms. Allocated memory is still 166.7 MB. Free memory was 150.0 MB in the beginning and 148.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:57,159 INFO L168 Benchmark]: RCFGBuilder took 345.29 ms. Allocated memory is still 166.7 MB. Free memory was 148.5 MB in the beginning and 133.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:57,159 INFO L168 Benchmark]: IcfgTransformer took 181.66 ms. Allocated memory is still 166.7 MB. Free memory was 133.8 MB in the beginning and 119.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:57,159 INFO L168 Benchmark]: TraceAbstraction took 2147.68 ms. Allocated memory is still 166.7 MB. Free memory was 119.1 MB in the beginning and 65.3 MB in the end (delta: 53.8 MB). Peak memory consumption was 55.4 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:57,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 166.7 MB. Free memory is still 148.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 227.21 ms. Allocated memory is still 166.7 MB. Free memory was 131.7 MB in the beginning and 150.0 MB in the end (delta: -18.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.40 ms. Allocated memory is still 166.7 MB. Free memory was 150.0 MB in the beginning and 148.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 345.29 ms. Allocated memory is still 166.7 MB. Free memory was 148.5 MB in the beginning and 133.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 181.66 ms. Allocated memory is still 166.7 MB. Free memory was 133.8 MB in the beginning and 119.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2147.68 ms. Allocated memory is still 166.7 MB. Free memory was 119.1 MB in the beginning and 65.3 MB in the end (delta: 53.8 MB). Peak memory consumption was 55.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2095.6ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 10.5ms, AutomataDifference: 558.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 52 SDslu, 91 SDs, 0 SdLazy, 162 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 707.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.7ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.5ms SsaConstructionTime, 93.1ms SatisfiabilityAnalysisTime, 788.4ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 490 SizeOfPredicates, 10 NumberOfNonLiveVariables, 175 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...