/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/benchmark18_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 16:58:08,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 16:58:08,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 16:58:08,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 16:58:08,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 16:58:08,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 16:58:08,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 16:58:08,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 16:58:08,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 16:58:08,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 16:58:08,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 16:58:08,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 16:58:08,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 16:58:08,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 16:58:08,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 16:58:08,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 16:58:08,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 16:58:08,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 16:58:08,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 16:58:08,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 16:58:08,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 16:58:08,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 16:58:08,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 16:58:08,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 16:58:08,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 16:58:08,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 16:58:08,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 16:58:08,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 16:58:08,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 16:58:08,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 16:58:08,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 16:58:08,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 16:58:08,408 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 16:58:08,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 16:58:08,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 16:58:08,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 16:58:08,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 16:58:08,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 16:58:08,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 16:58:08,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 16:58:08,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 16:58:08,409 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 16:58:08,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 16:58:08,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 16:58:08,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 16:58:08,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 16:58:08,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 16:58:08,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 16:58:08,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 16:58:08,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 16:58:08,410 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 16:58:08,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 16:58:08,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 16:58:08,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 16:58:08,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 16:58:08,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 16:58:08,583 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 16:58:08,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark18_conjunctive.i [2022-02-23 16:58:08,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b183492/e729117e12af4ce1a72d0bd87f998d81/FLAG465d925a2 [2022-02-23 16:58:08,965 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 16:58:08,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark18_conjunctive.i [2022-02-23 16:58:08,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b183492/e729117e12af4ce1a72d0bd87f998d81/FLAG465d925a2 [2022-02-23 16:58:08,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b183492/e729117e12af4ce1a72d0bd87f998d81 [2022-02-23 16:58:08,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 16:58:08,984 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 16:58:08,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 16:58:08,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 16:58:08,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 16:58:08,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:58:08" (1/1) ... [2022-02-23 16:58:08,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7308e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:08, skipping insertion in model container [2022-02-23 16:58:08,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:58:08" (1/1) ... [2022-02-23 16:58:09,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 16:58:09,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 16:58:09,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark18_conjunctive.i[873,886] [2022-02-23 16:58:09,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 16:58:09,138 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 16:58:09,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark18_conjunctive.i[873,886] [2022-02-23 16:58:09,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 16:58:09,154 INFO L208 MainTranslator]: Completed translation [2022-02-23 16:58:09,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:09 WrapperNode [2022-02-23 16:58:09,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 16:58:09,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 16:58:09,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 16:58:09,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 16:58:09,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:09" (1/1) ... [2022-02-23 16:58:09,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:09" (1/1) ... [2022-02-23 16:58:09,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:09" (1/1) ... [2022-02-23 16:58:09,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:09" (1/1) ... [2022-02-23 16:58:09,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:09" (1/1) ... [2022-02-23 16:58:09,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:09" (1/1) ... [2022-02-23 16:58:09,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:09" (1/1) ... [2022-02-23 16:58:09,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 16:58:09,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 16:58:09,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 16:58:09,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 16:58:09,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:09" (1/1) ... [2022-02-23 16:58:09,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 16:58:09,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:58:09,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 16:58:09,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 16:58:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 16:58:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 16:58:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 16:58:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 16:58:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 16:58:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 16:58:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-23 16:58:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-23 16:58:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 16:58:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 16:58:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 16:58:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-23 16:58:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 16:58:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 16:58:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 16:58:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 16:58:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 16:58:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 16:58:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 16:58:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 16:58:09,295 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 16:58:09,296 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 16:58:09,359 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 16:58:09,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 16:58:09,362 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 16:58:09,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:58:09 BoogieIcfgContainer [2022-02-23 16:58:09,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 16:58:09,364 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 16:58:09,364 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 16:58:09,366 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 16:58:09,368 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:58:09" (1/1) ... [2022-02-23 16:58:09,514 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 [2022-02-23 16:58:09,514 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~k~0_1 (+ v_main_~k~0_2 1)) (< v_main_~i~0_3 v_main_~n~0_2) (= v_main_~i~0_2 (+ v_main_~i~0_3 1))) InVars {main_~k~0=v_main_~k~0_2, main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_2} OutVars{main_~k~0=v_main_~k~0_1, main_#t~post4=|v_main_#t~post4_1|, main_~i~0=v_main_~i~0_2, main_#t~post5=|v_main_#t~post5_1|, main_~n~0=v_main_~n~0_2} AuxVars[] AssignedVars[main_~k~0, main_#t~post4, main_~i~0, main_#t~post5] to Formula: (or (and (= (+ v_main_~i~0_3 v_main_~k~0_1) (+ v_main_~i~0_2 v_main_~k~0_2)) (< v_main_~i~0_3 v_main_~i~0_2) (< v_main_~i~0_2 (+ v_main_~n~0_2 1))) (and (= |v_main_#t~post5_3| |v_main_#t~post5_1|) (= v_main_~k~0_2 v_main_~k~0_1) (= |v_main_#t~post4_3| |v_main_#t~post4_1|) (<= v_main_~n~0_2 v_main_~i~0_3) (= v_main_~i~0_3 v_main_~i~0_2))) InVars {main_~i~0=v_main_~i~0_3, main_#t~post4=|v_main_#t~post4_3|, main_#t~post5=|v_main_#t~post5_3|, main_~n~0=v_main_~n~0_2, main_~k~0=v_main_~k~0_2} OutVars{main_#t~post4=|v_main_#t~post4_1|, main_~i~0=v_main_~i~0_2, main_#t~post5=|v_main_#t~post5_1|, main_~n~0=v_main_~n~0_2, main_~k~0=v_main_~k~0_1} AuxVars[] AssignedVars[main_~k~0, main_#t~post4, main_~i~0, main_#t~post5] [2022-02-23 16:58:09,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 04:58:09 BasicIcfg [2022-02-23 16:58:09,518 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 16:58:09,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 16:58:09,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 16:58:09,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 16:58:09,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:58:08" (1/4) ... [2022-02-23 16:58:09,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2369b17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:58:09, skipping insertion in model container [2022-02-23 16:58:09,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:58:09" (2/4) ... [2022-02-23 16:58:09,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2369b17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:58:09, skipping insertion in model container [2022-02-23 16:58:09,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:58:09" (3/4) ... [2022-02-23 16:58:09,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2369b17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:58:09, skipping insertion in model container [2022-02-23 16:58:09,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 04:58:09" (4/4) ... [2022-02-23 16:58:09,532 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark18_conjunctive.iJordan [2022-02-23 16:58:09,535 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 16:58:09,535 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 16:58:09,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 16:58:09,572 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 16:58:09,572 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 16:58:09,582 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) [2022-02-23 16:58:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 16:58:09,588 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:58:09,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:58:09,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:58:09,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:58:09,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-02-23 16:58:09,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:58:09,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991889068] [2022-02-23 16:58:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:58:09,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:58:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:58:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:09,736 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:58:09,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991889068] [2022-02-23 16:58:09,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991889068] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 16:58:09,737 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 16:58:09,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 16:58:09,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494640831] [2022-02-23 16:58:09,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 16:58:09,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 16:58:09,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:58:09,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 16:58:09,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 16:58:09,768 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) [2022-02-23 16:58:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:58:09,793 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-02-23 16:58:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 16:58:09,794 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 [2022-02-23 16:58:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:58:09,804 INFO L225 Difference]: With dead ends: 20 [2022-02-23 16:58:09,804 INFO L226 Difference]: Without dead ends: 13 [2022-02-23 16:58:09,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 16:58:09,810 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 16:58:09,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 16:58:09,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-23 16:58:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-23 16:58:09,833 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) [2022-02-23 16:58:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-02-23 16:58:09,834 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-02-23 16:58:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:58:09,834 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-02-23 16:58:09,835 INFO L471 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) [2022-02-23 16:58:09,835 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-02-23 16:58:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 16:58:09,835 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:58:09,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:58:09,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 16:58:09,836 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:58:09,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:58:09,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-02-23 16:58:09,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:58:09,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424405735] [2022-02-23 16:58:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:58:09,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:58:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:09,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:58:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:09,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:58:09,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424405735] [2022-02-23 16:58:09,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424405735] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 16:58:09,895 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 16:58:09,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-23 16:58:09,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513203077] [2022-02-23 16:58:09,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 16:58:09,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-23 16:58:09,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:58:09,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-23 16:58:09,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 16:58:09,897 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) [2022-02-23 16:58:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:58:09,926 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-02-23 16:58:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-23 16:58:09,928 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 [2022-02-23 16:58:09,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:58:09,928 INFO L225 Difference]: With dead ends: 14 [2022-02-23 16:58:09,928 INFO L226 Difference]: Without dead ends: 14 [2022-02-23 16:58:09,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-23 16:58:09,931 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 16:58:09,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 16:58:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-23 16:58:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-23 16:58:09,937 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) [2022-02-23 16:58:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-02-23 16:58:09,938 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-02-23 16:58:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:58:09,939 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-02-23 16:58:09,939 INFO L471 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) [2022-02-23 16:58:09,940 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-02-23 16:58:09,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-23 16:58:09,941 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:58:09,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:58:09,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 16:58:09,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:58:09,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:58:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2022-02-23 16:58:09,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:58:09,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202590802] [2022-02-23 16:58:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:58:09,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:58:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 16:58:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:10,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:58:10,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202590802] [2022-02-23 16:58:10,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202590802] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 16:58:10,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717077790] [2022-02-23 16:58:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:58:10,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:58:10,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:58:10,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 16:58:10,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 16:58:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:58:10,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 16:58:10,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:58:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:10,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 16:58:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:58:10,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717077790] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 16:58:10,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 16:58:10,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-02-23 16:58:10,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096861220] [2022-02-23 16:58:10,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 16:58:10,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-23 16:58:10,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:58:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-23 16:58:10,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-02-23 16:58:10,520 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:58:10,603 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-02-23 16:58:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 16:58:10,604 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-02-23 16:58:10,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:58:10,604 INFO L225 Difference]: With dead ends: 12 [2022-02-23 16:58:10,604 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 16:58:10,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-02-23 16:58:10,606 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 16:58:10,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 55 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 16:58:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 16:58:10,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 16:58:10,607 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) [2022-02-23 16:58:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 16:58:10,607 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-02-23 16:58:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:58:10,607 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 16:58:10,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 16:58:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 16:58:10,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 16:58:10,610 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 16:58:10,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 16:58:10,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:58:10,825 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-23 16:58:10,826 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 16:58:10,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:58:10 BasicIcfg [2022-02-23 16:58:10,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 16:58:10,828 INFO L158 Benchmark]: Toolchain (without parser) took 1843.33ms. Allocated memory was 235.9MB in the beginning and 283.1MB in the end (delta: 47.2MB). Free memory was 185.9MB in the beginning and 217.7MB in the end (delta: -31.8MB). Peak memory consumption was 15.4MB. Max. memory is 8.0GB. [2022-02-23 16:58:10,828 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 235.9MB. Free memory was 202.7MB in the beginning and 202.6MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 16:58:10,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.70ms. Allocated memory is still 235.9MB. Free memory was 185.7MB in the beginning and 212.6MB in the end (delta: -26.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-23 16:58:10,829 INFO L158 Benchmark]: Boogie Preprocessor took 16.32ms. Allocated memory is still 235.9MB. Free memory was 212.6MB in the beginning and 211.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 16:58:10,829 INFO L158 Benchmark]: RCFGBuilder took 191.50ms. Allocated memory is still 235.9MB. Free memory was 211.1MB in the beginning and 201.2MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-23 16:58:10,829 INFO L158 Benchmark]: IcfgTransformer took 153.65ms. Allocated memory is still 235.9MB. Free memory was 201.2MB in the beginning and 193.6MB in the end (delta: 7.6MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-23 16:58:10,829 INFO L158 Benchmark]: TraceAbstraction took 1299.85ms. Allocated memory was 235.9MB in the beginning and 283.1MB in the end (delta: 47.2MB). Free memory was 193.1MB in the beginning and 217.7MB in the end (delta: -24.6MB). Peak memory consumption was 23.2MB. Max. memory is 8.0GB. [2022-02-23 16:58:10,830 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 0.09ms. Allocated memory is still 235.9MB. Free memory was 202.7MB in the beginning and 202.6MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.70ms. Allocated memory is still 235.9MB. Free memory was 185.7MB in the beginning and 212.6MB in the end (delta: -26.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.32ms. Allocated memory is still 235.9MB. Free memory was 212.6MB in the beginning and 211.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 191.50ms. Allocated memory is still 235.9MB. Free memory was 211.1MB in the beginning and 201.2MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 153.65ms. Allocated memory is still 235.9MB. Free memory was 201.2MB in the beginning and 193.6MB in the end (delta: 7.6MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1299.85ms. Allocated memory was 235.9MB in the beginning and 283.1MB in the end (delta: 47.2MB). Free memory was 193.1MB in the beginning and 217.7MB in the end (delta: -24.6MB). Peak memory consumption was 23.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 97 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 40 mSDtfsCounter, 64 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 210 SizeOfPredicates, 6 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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! [2022-02-23 16:58:10,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...