/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-zilu/benchmark34_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:52:48,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:52:48,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:52:48,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:52:48,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:52:48,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:52:48,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:52:48,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:52:48,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:52:48,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:52:48,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:52:48,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:52:48,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:52:48,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:52:48,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:52:48,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:52:48,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:52:48,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:52:48,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:52:48,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:52:48,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:52:48,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:52:48,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:52:48,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:52:48,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 06:52:48,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 06:52:48,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 06:52:48,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 06:52:48,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 06:52:48,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 06:52:48,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 06:52:48,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 06:52:48,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 06:52:48,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 06:52:48,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 06:52:48,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 06:52:48,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 06:52:48,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 06:52:48,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:52:48,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:52:48,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:52:48,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:52:48,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:52:48,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:52:48,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:52:48,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:52:48,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:52:48,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:52:48,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:52:48,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:52:48,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:52:48,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:52:48,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:52:48,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:52:48,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:52:48,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:52:48,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:52:48,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:52:48,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:52:48,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:52:48,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:52:48,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:52:48,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:52:48,114 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:52:48,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:52:48,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:52:48,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:52:48,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:52:48,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:52:48,433 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:52:48,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i [2021-05-06 06:52:48,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b8d367e/343384ffc00d4064acd0bec838ee9b54/FLAG6f710e005 [2021-05-06 06:52:48,985 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:52:48,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i [2021-05-06 06:52:48,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b8d367e/343384ffc00d4064acd0bec838ee9b54/FLAG6f710e005 [2021-05-06 06:52:49,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b8d367e/343384ffc00d4064acd0bec838ee9b54 [2021-05-06 06:52:49,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:52:49,471 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:52:49,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:52:49,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:52:49,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:52:49,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:52:49" (1/1) ... [2021-05-06 06:52:49,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f392b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49, skipping insertion in model container [2021-05-06 06:52:49,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:52:49" (1/1) ... [2021-05-06 06:52:49,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:52:49,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:52:49,620 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-zilu/benchmark34_conjunctive.i[873,886] [2021-05-06 06:52:49,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:52:49,646 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:52:49,696 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-zilu/benchmark34_conjunctive.i[873,886] [2021-05-06 06:52:49,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:52:49,719 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:52:49,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49 WrapperNode [2021-05-06 06:52:49,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:52:49,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:52:49,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:52:49,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:52:49,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49" (1/1) ... [2021-05-06 06:52:49,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49" (1/1) ... [2021-05-06 06:52:49,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49" (1/1) ... [2021-05-06 06:52:49,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49" (1/1) ... [2021-05-06 06:52:49,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49" (1/1) ... [2021-05-06 06:52:49,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49" (1/1) ... [2021-05-06 06:52:49,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49" (1/1) ... [2021-05-06 06:52:49,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:52:49,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:52:49,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:52:49,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:52:49,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49" (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 [2021-05-06 06:52:49,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:52:49,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:52:49,836 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:52:49,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:52:49,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:52:49,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:52:49,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 06:52:49,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 06:52:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:52:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:52:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:52:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-06 06:52:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:52:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:52:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:52:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:52:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:52:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:52:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:52:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:52:50,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:52:50,099 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 06:52:50,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:50 BoogieIcfgContainer [2021-05-06 06:52:50,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:52:50,101 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:52:50,101 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:52:50,102 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:52:50,104 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:50" (1/1) ... [2021-05-06 06:52:50,170 WARN L240 tifierPushTermWalker]: treesize reduction 13, result has 81.9 percent of original size [2021-05-06 06:52:50,325 WARN L245 tifierPushTermWalker]: treesize reduction 13, result has 81.9 percent of original size 59 [2021-05-06 06:52:50,428 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:52:50,429 INFO L91 elerationTransformer]: Accelerated Formula: (and (= (+ v_main_~j~0_3 1) v_main_~j~0_2) (< 0 v_main_~n~0_2) (= v_main_~k~0_2 (+ v_main_~k~0_1 1)) (< v_main_~j~0_3 v_main_~n~0_2)) InVars {main_~k~0=v_main_~k~0_2, main_~j~0=v_main_~j~0_3, main_~n~0=v_main_~n~0_2} OutVars{main_~k~0=v_main_~k~0_1, main_~j~0=v_main_~j~0_2, main_~n~0=v_main_~n~0_2, main_#t~post6=|v_main_#t~post6_1|, main_#t~post7=|v_main_#t~post7_1|} AuxVars[] AssignedVars[main_~k~0, main_~j~0, main_#t~post6, main_#t~post7] to Formula: (or (let ((.cse0 (+ v_itFin_1 v_main_~j~0_3))) (and (< 0 v_main_~n~0_2) (= v_main_~k~0_2 (+ v_itFin_1 v_main_~k~0_1)) (< 0 v_itFin_1) (= v_main_~j~0_2 .cse0) (< .cse0 (+ v_main_~n~0_2 1)))) (and (= |v_main_#t~post7_3| |v_main_#t~post7_1|) (= v_itFin_1 0) (or (<= v_main_~n~0_2 v_main_~j~0_3) (<= v_main_~n~0_2 0)) (= |v_main_#t~post6_3| |v_main_#t~post6_1|) (= v_main_~k~0_2 v_main_~k~0_1) (= v_main_~j~0_3 v_main_~j~0_2))) InVars {main_~n~0=v_main_~n~0_2, main_~k~0=v_main_~k~0_2, main_#t~post6=|v_main_#t~post6_3|, main_~j~0=v_main_~j~0_3, main_#t~post7=|v_main_#t~post7_3|} OutVars{main_~n~0=v_main_~n~0_2, main_~k~0=v_main_~k~0_1, main_#t~post6=|v_main_#t~post6_1|, main_~j~0=v_main_~j~0_2, main_#t~post7=|v_main_#t~post7_1|} AuxVars[v_itFin_1] AssignedVars[main_~k~0, main_~j~0, main_#t~post6, main_#t~post7] [2021-05-06 06:52:50,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:52:50 BasicIcfg [2021-05-06 06:52:50,438 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:52:50,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:52:50,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:52:50,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:52:50,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:52:49" (1/4) ... [2021-05-06 06:52:50,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4840c378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:52:50, skipping insertion in model container [2021-05-06 06:52:50,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:49" (2/4) ... [2021-05-06 06:52:50,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4840c378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:52:50, skipping insertion in model container [2021-05-06 06:52:50,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:50" (3/4) ... [2021-05-06 06:52:50,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4840c378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:52:50, skipping insertion in model container [2021-05-06 06:52:50,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:52:50" (4/4) ... [2021-05-06 06:52:50,449 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.iJordan [2021-05-06 06:52:50,454 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:52:50,457 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:52:50,472 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:52:50,497 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:52:50,497 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:52:50,497 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:52:50,498 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:52:50,498 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:52:50,498 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:52:50,498 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:52:50,498 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:52:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-05-06 06:52:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:52:50,519 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:50,520 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:50,520 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:50,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:50,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2021-05-06 06:52:50,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:50,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994512373] [2021-05-06 06:52:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:50,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:50,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:50,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994512373] [2021-05-06 06:52:50,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994512373] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:52:50,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:52:50,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:52:50,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343876189] [2021-05-06 06:52:50,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:52:50,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:50,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:52:50,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:52:50,793 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-05-06 06:52:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:50,835 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-06 06:52:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:52:50,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2021-05-06 06:52:50,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:50,843 INFO L225 Difference]: With dead ends: 20 [2021-05-06 06:52:50,843 INFO L226 Difference]: Without dead ends: 13 [2021-05-06 06:52:50,844 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:52:50,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-06 06:52:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-06 06:52:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-05-06 06:52:50,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-06 06:52:50,868 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-05-06 06:52:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:50,869 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-06 06:52:50,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-05-06 06:52:50,869 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-06 06:52:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:52:50,870 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:50,870 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:50,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:52:50,870 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:50,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2021-05-06 06:52:50,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:50,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897430641] [2021-05-06 06:52:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:50,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:50,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:50,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897430641] [2021-05-06 06:52:50,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897430641] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:52:50,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:52:50,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:52:50,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128409082] [2021-05-06 06:52:50,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:52:50,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:50,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:52:50,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:52:50,942 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-05-06 06:52:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:51,001 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-05-06 06:52:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:52:51,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 12 [2021-05-06 06:52:51,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:51,003 INFO L225 Difference]: With dead ends: 14 [2021-05-06 06:52:51,003 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 06:52:51,003 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:52:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 06:52:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 06:52:51,007 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) [2021-05-06 06:52:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-06 06:52:51,010 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-06 06:52:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:51,010 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-06 06:52:51,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-05-06 06:52:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-06 06:52:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 06:52:51,011 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:51,012 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:51,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:52:51,014 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2021-05-06 06:52:51,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:51,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774314319] [2021-05-06 06:52:51,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:51,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:51,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:51,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774314319] [2021-05-06 06:52:51,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774314319] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:52:51,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606170937] [2021-05-06 06:52:51,245 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 [2021-05-06 06:52:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:51,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 06:52:51,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:52:51,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:51,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:51,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:51,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:51,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:51,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:51,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606170937] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:52:51,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:52:51,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-05-06 06:52:51,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902600802] [2021-05-06 06:52:51,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 06:52:51,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:51,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 06:52:51,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-05-06 06:52:51,505 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 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) [2021-05-06 06:52:51,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:51,748 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-05-06 06:52:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 06:52:51,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 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 13 [2021-05-06 06:52:51,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:51,749 INFO L225 Difference]: With dead ends: 12 [2021-05-06 06:52:51,749 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:52:51,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 329.6ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-05-06 06:52:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:52:51,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:52:51,750 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) [2021-05-06 06:52:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:52:51,751 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-05-06 06:52:51,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:51,751 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:52:51,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 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) [2021-05-06 06:52:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:52:51,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:52:51,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 06:52:51,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:52:51 BasicIcfg [2021-05-06 06:52:51,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:52:51,970 INFO L168 Benchmark]: Toolchain (without parser) took 2498.35 ms. Allocated memory was 228.6 MB in the beginning and 274.7 MB in the end (delta: 46.1 MB). Free memory was 194.1 MB in the beginning and 235.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:51,970 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 228.6 MB. Free memory is still 210.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:52:51,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.90 ms. Allocated memory is still 228.6 MB. Free memory was 193.8 MB in the beginning and 211.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:51,971 INFO L168 Benchmark]: Boogie Preprocessor took 40.20 ms. Allocated memory is still 228.6 MB. Free memory was 211.9 MB in the beginning and 210.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:51,971 INFO L168 Benchmark]: RCFGBuilder took 339.32 ms. Allocated memory is still 228.6 MB. Free memory was 210.6 MB in the beginning and 196.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:51,971 INFO L168 Benchmark]: IcfgTransformer took 337.21 ms. Allocated memory is still 228.6 MB. Free memory was 196.6 MB in the beginning and 176.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:51,971 INFO L168 Benchmark]: TraceAbstraction took 1528.31 ms. Allocated memory was 228.6 MB in the beginning and 274.7 MB in the end (delta: 46.1 MB). Free memory was 175.6 MB in the beginning and 235.8 MB in the end (delta: -60.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:52:51,972 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 0.64 ms. Allocated memory is still 228.6 MB. Free memory is still 210.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.90 ms. Allocated memory is still 228.6 MB. Free memory was 193.8 MB in the beginning and 211.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.20 ms. Allocated memory is still 228.6 MB. Free memory was 211.9 MB in the beginning and 210.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 339.32 ms. Allocated memory is still 228.6 MB. Free memory was 210.6 MB in the beginning and 196.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 337.21 ms. Allocated memory is still 228.6 MB. Free memory was 196.6 MB in the beginning and 176.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1528.31 ms. Allocated memory was 228.6 MB in the beginning and 274.7 MB in the end (delta: 46.1 MB). Free memory was 175.6 MB in the beginning and 235.8 MB in the end (delta: -60.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1470.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 14.6ms, AutomataDifference: 387.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 26 SDslu, 51 SDs, 0 SdLazy, 64 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 448.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.4ms SsaConstructionTime, 87.4ms SatisfiabilityAnalysisTime, 557.7ms InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 205 SizeOfPredicates, 3 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...