/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark26_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 04:19:46,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 04:19:46,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 04:19:46,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 04:19:46,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 04:19:46,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 04:19:46,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 04:19:46,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 04:19:46,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 04:19:46,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 04:19:46,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 04:19:46,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 04:19:46,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 04:19:46,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 04:19:46,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 04:19:46,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 04:19:46,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 04:19:46,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 04:19:46,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 04:19:46,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 04:19:46,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 04:19:46,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 04:19:46,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 04:19:46,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 04:19:46,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 04:19:46,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 04:19:46,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 04:19:46,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 04:19:46,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 04:19:46,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 04:19:46,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 04:19:46,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 04:19:46,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 04:19:46,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 04:19:46,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 04:19:46,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 04:19:46,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-01 04:19:46,148 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 04:19:46,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 04:19:46,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 04:19:46,151 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 04:19:46,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 04:19:46,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 04:19:46,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 04:19:46,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 04:19:46,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 04:19:46,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 04:19:46,152 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 04:19:46,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 04:19:46,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 04:19:46,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 04:19:46,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 04:19:46,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 04:19:46,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 04:19:46,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 04:19:46,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 04:19:46,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 04:19:46,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-01 04:19:46,155 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-01 04:19:46,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 04:19:46,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 04:19:46,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 04:19:46,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 04:19:46,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 04:19:46,534 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 04:19:46,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark26_linear.i [2021-05-01 04:19:46,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a58a8a6a/7b0a4cc9c1fa4d34bc85daa30bcd20a7/FLAGbac059cbc [2021-05-01 04:19:47,143 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 04:19:47,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark26_linear.i [2021-05-01 04:19:47,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a58a8a6a/7b0a4cc9c1fa4d34bc85daa30bcd20a7/FLAGbac059cbc [2021-05-01 04:19:47,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a58a8a6a/7b0a4cc9c1fa4d34bc85daa30bcd20a7 [2021-05-01 04:19:47,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 04:19:47,622 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-01 04:19:47,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 04:19:47,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 04:19:47,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 04:19:47,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 04:19:47" (1/1) ... [2021-05-01 04:19:47,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb92af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47, skipping insertion in model container [2021-05-01 04:19:47,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 04:19:47" (1/1) ... [2021-05-01 04:19:47,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 04:19:47,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 04:19:47,794 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/benchmark26_linear.i[868,881] [2021-05-01 04:19:47,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 04:19:47,813 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 04:19:47,835 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/benchmark26_linear.i[868,881] [2021-05-01 04:19:47,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 04:19:47,855 INFO L208 MainTranslator]: Completed translation [2021-05-01 04:19:47,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47 WrapperNode [2021-05-01 04:19:47,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 04:19:47,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 04:19:47,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 04:19:47,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 04:19:47,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47" (1/1) ... [2021-05-01 04:19:47,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47" (1/1) ... [2021-05-01 04:19:47,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47" (1/1) ... [2021-05-01 04:19:47,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47" (1/1) ... [2021-05-01 04:19:47,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47" (1/1) ... [2021-05-01 04:19:47,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47" (1/1) ... [2021-05-01 04:19:47,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47" (1/1) ... [2021-05-01 04:19:47,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 04:19:47,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 04:19:47,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 04:19:47,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 04:19:47,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47" (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 [2021-05-01 04:19:47,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 04:19:47,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 04:19:47,977 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 04:19:47,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 04:19:47,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 04:19:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 04:19:47,978 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 04:19:47,978 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 04:19:47,978 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 04:19:47,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 04:19:47,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 04:19:47,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-01 04:19:47,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 04:19:47,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 04:19:47,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 04:19:47,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 04:19:47,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 04:19:47,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 04:19:47,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 04:19:47,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 04:19:48,237 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 04:19:48,237 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 04:19:48,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 04:19:48 BoogieIcfgContainer [2021-05-01 04:19:48,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 04:19:48,239 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-01 04:19:48,239 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-01 04:19:48,240 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-01 04:19:48,242 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 04:19:48" (1/1) ... [2021-05-01 04:19:48,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:48,331 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~x~0_3 v_main_~y~0_2) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2} AuxVars[] AssignedVars[] [2021-05-01 04:19:48,350 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 86.0 percent of original size [2021-05-01 04:19:48,367 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,373 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,382 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,399 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,424 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 04:19:48,429 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,437 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 04:19:48,442 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,444 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,448 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 86.0 percent of original size 43 [2021-05-01 04:19:48,467 INFO L1111 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_2 (+ v_main_~x~0_3 1)) (< v_main_~x~0_3 v_main_~y~0_2)) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_2, main_~y~0=v_main_~y~0_2} AuxVars[] AssignedVars[main_~x~0] with Formula: (or (and (= v_main_~x~0_3 v_main_~x~0_2) (= v_itFin_1 0) (<= v_main_~y~0_2 v_main_~x~0_3)) (let ((.cse0 (+ v_itFin_1 v_main_~x~0_3))) (and (= v_main_~x~0_2 .cse0) (<= v_main_~y~0_2 .cse0) (< .cse0 (+ v_main_~y~0_2 1)) (< v_main_~x~0_3 v_main_~y~0_2)))) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_2, main_~y~0=v_main_~y~0_2} AuxVars[v_itFin_1] AssignedVars[main_~x~0] [2021-05-01 04:19:48,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 04:19:48 BasicIcfg [2021-05-01 04:19:48,475 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-01 04:19:48,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 04:19:48,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 04:19:48,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 04:19:48,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 04:19:47" (1/4) ... [2021-05-01 04:19:48,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4956954c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 04:19:48, skipping insertion in model container [2021-05-01 04:19:48,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 04:19:47" (2/4) ... [2021-05-01 04:19:48,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4956954c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 04:19:48, skipping insertion in model container [2021-05-01 04:19:48,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 04:19:48" (3/4) ... [2021-05-01 04:19:48,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4956954c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 04:19:48, skipping insertion in model container [2021-05-01 04:19:48,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 04:19:48" (4/4) ... [2021-05-01 04:19:48,482 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark26_linear.iJordan [2021-05-01 04:19:48,486 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-01 04:19:48,490 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 04:19:48,504 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 04:19:48,520 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 04:19:48,520 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-01 04:19:48,521 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-01 04:19:48,521 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 04:19:48,521 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 04:19:48,521 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 04:19:48,521 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 04:19:48,521 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 04:19:48,532 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) [2021-05-01 04:19:48,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 04:19:48,538 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 04:19:48,539 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 04:19:48,539 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 04:19:48,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 04:19:48,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2021-05-01 04:19:48,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 04:19:48,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622201113] [2021-05-01 04:19:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 04:19:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:19:48,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:48,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:48,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 04:19:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:19:48,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 04:19:48,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 04:19:48,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622201113] [2021-05-01 04:19:48,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622201113] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 04:19:48,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 04:19:48,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 04:19:48,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406689829] [2021-05-01 04:19:48,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 04:19:48,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 04:19:48,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 04:19:48,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 04:19:48,703 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) [2021-05-01 04:19:48,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 04:19:48,735 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-01 04:19:48,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 04:19:48,737 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 [2021-05-01 04:19:48,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 04:19:48,742 INFO L225 Difference]: With dead ends: 20 [2021-05-01 04:19:48,743 INFO L226 Difference]: Without dead ends: 13 [2021-05-01 04:19:48,744 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 04:19:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-01 04:19:48,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-01 04:19:48,766 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) [2021-05-01 04:19:48,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-01 04:19:48,767 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-05-01 04:19:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 04:19:48,768 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-01 04:19:48,768 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) [2021-05-01 04:19:48,768 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-01 04:19:48,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 04:19:48,769 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 04:19:48,769 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 04:19:48,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 04:19:48,769 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 04:19:48,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 04:19:48,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2021-05-01 04:19:48,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 04:19:48,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228848980] [2021-05-01 04:19:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 04:19:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:19:48,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:48,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 04:19:48,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:48,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 04:19:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:19:48,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:48,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 04:19:48,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 04:19:48,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228848980] [2021-05-01 04:19:48,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228848980] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 04:19:48,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 04:19:48,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 04:19:48,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616782739] [2021-05-01 04:19:48,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 04:19:48,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 04:19:48,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 04:19:48,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 04:19:48,877 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) [2021-05-01 04:19:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 04:19:48,953 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-05-01 04:19:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 04:19:48,953 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 [2021-05-01 04:19:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 04:19:48,954 INFO L225 Difference]: With dead ends: 14 [2021-05-01 04:19:48,954 INFO L226 Difference]: Without dead ends: 14 [2021-05-01 04:19:48,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 04:19:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-01 04:19:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-01 04:19:48,957 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) [2021-05-01 04:19:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-01 04:19:48,958 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-01 04:19:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 04:19:48,958 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-01 04:19:48,958 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) [2021-05-01 04:19:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-01 04:19:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-01 04:19:48,959 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 04:19:48,959 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 04:19:48,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 04:19:48,959 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 04:19:48,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 04:19:48,959 INFO L82 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2021-05-01 04:19:48,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 04:19:48,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655956163] [2021-05-01 04:19:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 04:19:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:19:49,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 04:19:49,028 INFO L142 QuantifierPusher]: treesize reduction 5, result has 50.0 percent of original size [2021-05-01 04:19:49,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 04:19:49,035 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 04:19:49,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 04:19:49,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 04:19:49,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 04:19:49,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 04:19:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:19:49,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 04:19:49,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 04:19:49,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655956163] [2021-05-01 04:19:49,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655956163] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-01 04:19:49,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027383] [2021-05-01 04:19:49,084 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 [2021-05-01 04:19:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 04:19:49,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-01 04:19:49,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-01 04:19:49,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:49,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:49,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:49,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:49,160 INFO L142 QuantifierPusher]: treesize reduction 15, result has 61.5 percent of original size [2021-05-01 04:19:49,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:19:49,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 04:19:49,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 04:19:49,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:19:49,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 04:19:49,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 04:19:49,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 04:19:49,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 04:19:49,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 04:19:49,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 04:19:49,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 04:19:49,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 04:19:49,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:19:49,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 04:19:49,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 04:19:49,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:19:49,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 04:19:49,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 04:19:49,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,190 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-05-01 04:19:49,193 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 04:19:49,195 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-05-01 04:19:49,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:49,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:49,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:49,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 04:19:49,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:49,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:49,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 04:19:49,219 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-05-01 04:19:49,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 04:19:49,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 04:19:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 04:19:49,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027383] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-01 04:19:49,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-01 04:19:49,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2021-05-01 04:19:49,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845878645] [2021-05-01 04:19:49,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-01 04:19:49,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 04:19:49,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-01 04:19:49,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-01 04:19:49,225 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-05-01 04:19:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 04:19:49,328 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-05-01 04:19:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 04:19:49,328 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 7 states have internal predecessors, (14), 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 [2021-05-01 04:19:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 04:19:49,328 INFO L225 Difference]: With dead ends: 12 [2021-05-01 04:19:49,329 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 04:19:49,329 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-05-01 04:19:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 04:19:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 04:19:49,330 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) [2021-05-01 04:19:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 04:19:49,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-05-01 04:19:49,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 04:19:49,330 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 04:19:49,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-05-01 04:19:49,330 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 04:19:49,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 04:19:49,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-01 04:19:49,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 04:19:49 BasicIcfg [2021-05-01 04:19:49,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 04:19:49,545 INFO L168 Benchmark]: Toolchain (without parser) took 1922.29 ms. Allocated memory is still 185.6 MB. Free memory was 150.3 MB in the beginning and 97.2 MB in the end (delta: 53.0 MB). Peak memory consumption was 53.6 MB. Max. memory is 8.0 GB. [2021-05-01 04:19:49,546 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 185.6 MB. Free memory is still 167.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 04:19:49,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.11 ms. Allocated memory is still 185.6 MB. Free memory was 150.1 MB in the beginning and 168.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-05-01 04:19:49,552 INFO L168 Benchmark]: Boogie Preprocessor took 39.48 ms. Allocated memory is still 185.6 MB. Free memory was 168.9 MB in the beginning and 167.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 04:19:49,555 INFO L168 Benchmark]: RCFGBuilder took 325.75 ms. Allocated memory is still 185.6 MB. Free memory was 167.6 MB in the beginning and 154.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-01 04:19:49,558 INFO L168 Benchmark]: IcfgTransformer took 236.26 ms. Allocated memory is still 185.6 MB. Free memory was 154.2 MB in the beginning and 143.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-01 04:19:49,559 INFO L168 Benchmark]: TraceAbstraction took 1067.21 ms. Allocated memory is still 185.6 MB. Free memory was 142.7 MB in the beginning and 97.2 MB in the end (delta: 45.5 MB). Peak memory consumption was 46.2 MB. Max. memory is 8.0 GB. [2021-05-01 04:19:49,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {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 0.13 ms. Allocated memory is still 185.6 MB. Free memory is still 167.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.11 ms. Allocated memory is still 185.6 MB. Free memory was 150.1 MB in the beginning and 168.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.48 ms. Allocated memory is still 185.6 MB. Free memory was 168.9 MB in the beginning and 167.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 325.75 ms. Allocated memory is still 185.6 MB. Free memory was 167.6 MB in the beginning and 154.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 236.26 ms. Allocated memory is still 185.6 MB. Free memory was 154.2 MB in the beginning and 143.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1067.21 ms. Allocated memory is still 185.6 MB. Free memory was 142.7 MB in the beginning and 97.2 MB in the end (delta: 45.5 MB). Peak memory consumption was 46.2 MB. 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: 1021.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 10.3ms, AutomataDifference: 236.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 26 SDslu, 36 SDs, 0 SdLazy, 49 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 231.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.0ms SsaConstructionTime, 64.4ms SatisfiabilityAnalysisTime, 337.2ms InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 SizeOfPredicates, 1 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 8 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...