/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-new/gauss_sum.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:06:50,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:06:50,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:06:50,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:06:50,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:06:50,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:06:50,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:06:50,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:06:50,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:06:50,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:06:50,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:06:50,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:06:50,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:06:50,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:06:50,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:06:50,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:06:50,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:06:50,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:06:50,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:06:50,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:06:50,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:06:50,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:06:50,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:06:50,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:06:50,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:06:50,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:06:50,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:06:50,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:06:50,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:06:50,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:06:50,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:06:50,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:06:50,830 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:06:50,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:06:50,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:06:50,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:06:50,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:06:50,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:06:50,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:06:50,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:06:50,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:06:50,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:06:50,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:06:50,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:06:50,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:06:50,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:06:50,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:06:50,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:06:50,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:06:50,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:06:50,834 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:06:50,834 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:06:51,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:06:51,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:06:51,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:06:51,098 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:06:51,098 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:06:51,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.v+cfa-reducer.c [2021-05-06 06:06:51,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55af398a8/4e5c146551f84157bd8a13afa134a3b2/FLAG043ccc7d7 [2021-05-06 06:06:51,529 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:06:51,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.v+cfa-reducer.c [2021-05-06 06:06:51,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55af398a8/4e5c146551f84157bd8a13afa134a3b2/FLAG043ccc7d7 [2021-05-06 06:06:51,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55af398a8/4e5c146551f84157bd8a13afa134a3b2 [2021-05-06 06:06:51,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:06:51,551 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:06:51,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:06:51,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:06:51,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:06:51,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:06:51" (1/1) ... [2021-05-06 06:06:51,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e3549f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51, skipping insertion in model container [2021-05-06 06:06:51,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:06:51" (1/1) ... [2021-05-06 06:06:51,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:06:51,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:06:51,700 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-new/gauss_sum.i.v+cfa-reducer.c[1014,1027] [2021-05-06 06:06:51,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:06:51,708 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:06:51,740 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-new/gauss_sum.i.v+cfa-reducer.c[1014,1027] [2021-05-06 06:06:51,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:06:51,751 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:06:51,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51 WrapperNode [2021-05-06 06:06:51,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:06:51,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:06:51,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:06:51,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:06:51,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51" (1/1) ... [2021-05-06 06:06:51,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51" (1/1) ... [2021-05-06 06:06:51,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51" (1/1) ... [2021-05-06 06:06:51,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51" (1/1) ... [2021-05-06 06:06:51,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51" (1/1) ... [2021-05-06 06:06:51,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51" (1/1) ... [2021-05-06 06:06:51,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51" (1/1) ... [2021-05-06 06:06:51,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:06:51,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:06:51,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:06:51,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:06:51,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:06:51,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:06:51,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:06:51,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:06:51,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 06:06:51,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:06:51,850 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:06:51,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:06:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:06:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:06:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 06:06:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:06:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:06:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:06:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:06:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:06:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:06:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:06:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:06:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:06:52,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:06:52,066 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 06:06:52,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:06:52 BoogieIcfgContainer [2021-05-06 06:06:52,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:06:52,067 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:06:52,067 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:06:52,068 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:06:52,070 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:06:52" (1/1) ... [2021-05-06 06:06:52,215 WARN L240 tifierPushTermWalker]: treesize reduction 12, result has 92.3 percent of original size [2021-05-06 06:06:52,389 WARN L245 tifierPushTermWalker]: treesize reduction 12, result has 92.3 percent of original size 143 [2021-05-06 06:06:52,452 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:06:52,453 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~main__sum~0_2 (+ v_main_~main__sum~0_3 v_main_~main__i~0_3)) (<= v_main_~main__i~0_3 v_main_~main__n~0_3) (= v_main_~main__i~0_2 (+ v_main_~main__i~0_3 1))) InVars {main_~main__n~0=v_main_~main__n~0_3, main_~main__sum~0=v_main_~main__sum~0_3, main_~main__i~0=v_main_~main__i~0_3} OutVars{main_~main__n~0=v_main_~main__n~0_3, main_~main__sum~0=v_main_~main__sum~0_2, main_~main__i~0=v_main_~main__i~0_2} AuxVars[] AssignedVars[main_~main__sum~0, main_~main__i~0] to Formula: (let ((.cse0 (* v_itFinHalf_1 2)) (.cse3 (* v_main_~main__i~0_3 (- 1))) (.cse1 (* (* v_main_~main__i~0_3 v_itFinHalf_1) 2)) (.cse2 (* (* v_itFinHalf_1 v_itFinHalf_1) 2))) (or (and (= v_main_~main__i~0_3 v_main_~main__i~0_2) (= v_main_~main__sum~0_3 v_main_~main__sum~0_2) (= v_itFinHalf_1 0) (< v_main_~main__n~0_3 v_main_~main__i~0_3)) (and (= (+ v_main_~main__i~0_3 .cse0 1) v_main_~main__i~0_2) (<= 0 v_itFinHalf_1) (= v_main_~main__sum~0_2 (+ v_main_~main__sum~0_3 .cse1 v_main_~main__i~0_3 .cse2 v_itFinHalf_1)) (<= v_itFinHalf_1 (div (+ .cse3 v_main_~main__n~0_3) 2))) (and (= (+ v_main_~main__i~0_3 .cse0) v_main_~main__i~0_2) (<= v_itFinHalf_1 (+ (div (+ .cse3 v_main_~main__n~0_3 (- 1)) 2) 1)) (< 0 v_itFinHalf_1) (= (+ v_main_~main__sum~0_2 v_itFinHalf_1) (+ v_main_~main__sum~0_3 .cse1 .cse2))))) InVars {main_~main__n~0=v_main_~main__n~0_3, main_~main__sum~0=v_main_~main__sum~0_3, main_~main__i~0=v_main_~main__i~0_3} OutVars{main_~main__n~0=v_main_~main__n~0_3, main_~main__sum~0=v_main_~main__sum~0_2, main_~main__i~0=v_main_~main__i~0_2} AuxVars[v_itFinHalf_1] AssignedVars[main_~main__sum~0, main_~main__i~0] [2021-05-06 06:06:52,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:06:52 BasicIcfg [2021-05-06 06:06:52,458 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:06:52,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:06:52,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:06:52,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:06:52,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:06:51" (1/4) ... [2021-05-06 06:06:52,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b09d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:06:52, skipping insertion in model container [2021-05-06 06:06:52,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:51" (2/4) ... [2021-05-06 06:06:52,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b09d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:06:52, skipping insertion in model container [2021-05-06 06:06:52,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:06:52" (3/4) ... [2021-05-06 06:06:52,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b09d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:06:52, skipping insertion in model container [2021-05-06 06:06:52,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:06:52" (4/4) ... [2021-05-06 06:06:52,466 INFO L111 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.v+cfa-reducer.cJordan [2021-05-06 06:06:52,470 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:06:52,472 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:06:52,483 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:06:52,494 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:06:52,495 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:06:52,495 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:06:52,495 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:06:52,495 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:06:52,495 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:06:52,495 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:06:52,495 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:06:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 06:06:52,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 06:06:52,508 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:06:52,508 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:06:52,508 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:06:52,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:06:52,512 INFO L82 PathProgramCache]: Analyzing trace with hash 323261602, now seen corresponding path program 1 times [2021-05-06 06:06:52,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:06:52,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571903570] [2021-05-06 06:06:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:06:52,579 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:06:52,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092808182] [2021-05-06 06:06:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:06:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:06:52,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-06 06:06:52,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:06:52,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:06:52,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:06:52,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571903570] [2021-05-06 06:06:52,701 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 06:06:52,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092808182] [2021-05-06 06:06:52,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092808182] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:06:52,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:06:52,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:06:52,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958792509] [2021-05-06 06:06:52,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:06:52,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:06:52,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:06:52,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:06:52,714 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:06:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:06:52,735 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 06:06:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:06:52,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-06 06:06:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:06:52,740 INFO L225 Difference]: With dead ends: 19 [2021-05-06 06:06:52,740 INFO L226 Difference]: Without dead ends: 13 [2021-05-06 06:06:52,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:06:52,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-06 06:06:52,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-06 06:06:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:06:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-06 06:06:52,759 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-06 06:06:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:06:52,759 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-06 06:06:52,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:06:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-06 06:06:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:06:52,760 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:06:52,760 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:06:52,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-05-06 06:06:52,977 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:06:52,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:06:52,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1431144312, now seen corresponding path program 1 times [2021-05-06 06:06:52,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:06:52,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731259269] [2021-05-06 06:06:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:06:52,987 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:06:52,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369532340] [2021-05-06 06:06:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:06:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:06:53,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 06:06:53,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:06:53,682 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-05-06 06:06:53,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:53,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:06:54,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:06:54,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731259269] [2021-05-06 06:06:54,217 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 06:06:54,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369532340] [2021-05-06 06:06:54,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369532340] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:06:54,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 06:06:54,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 06:06:54,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264525078] [2021-05-06 06:06:54,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 06:06:54,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:06:54,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 06:06:54,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:06:54,220 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:06:59,479 WARN L205 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 42 [2021-05-06 06:06:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:06:59,481 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-05-06 06:06:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:06:59,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 06:06:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:06:59,481 INFO L225 Difference]: With dead ends: 11 [2021-05-06 06:06:59,481 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:06:59,482 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2538.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-05-06 06:06:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:06:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:06:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 06:06:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:06:59,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-06 06:06:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:06:59,482 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:06:59,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:06:59,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:06:59,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:06:59,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:06:59,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:06:59 BasicIcfg [2021-05-06 06:06:59,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:06:59,687 INFO L168 Benchmark]: Toolchain (without parser) took 8135.41 ms. Allocated memory was 189.8 MB in the beginning and 231.7 MB in the end (delta: 41.9 MB). Free memory was 155.2 MB in the beginning and 141.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 55.9 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:59,687 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 189.8 MB. Free memory is still 171.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:06:59,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.33 ms. Allocated memory is still 189.8 MB. Free memory was 155.0 MB in the beginning and 172.9 MB in the end (delta: -18.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:59,687 INFO L168 Benchmark]: Boogie Preprocessor took 31.97 ms. Allocated memory is still 189.8 MB. Free memory was 172.9 MB in the beginning and 171.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:06:59,687 INFO L168 Benchmark]: RCFGBuilder took 281.24 ms. Allocated memory is still 189.8 MB. Free memory was 171.8 MB in the beginning and 158.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:59,687 INFO L168 Benchmark]: IcfgTransformer took 390.98 ms. Allocated memory is still 189.8 MB. Free memory was 158.1 MB in the beginning and 131.4 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:59,688 INFO L168 Benchmark]: TraceAbstraction took 7225.44 ms. Allocated memory was 189.8 MB in the beginning and 231.7 MB in the end (delta: 41.9 MB). Free memory was 131.0 MB in the beginning and 141.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:59,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 189.8 MB. Free memory is still 171.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 198.33 ms. Allocated memory is still 189.8 MB. Free memory was 155.0 MB in the beginning and 172.9 MB in the end (delta: -18.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.97 ms. Allocated memory is still 189.8 MB. Free memory was 172.9 MB in the beginning and 171.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 281.24 ms. Allocated memory is still 189.8 MB. Free memory was 171.8 MB in the beginning and 158.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 390.98 ms. Allocated memory is still 189.8 MB. Free memory was 158.1 MB in the beginning and 131.4 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7225.44 ms. Allocated memory was 189.8 MB in the beginning and 231.7 MB in the end (delta: 41.9 MB). Free memory was 131.0 MB in the beginning and 141.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: 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 3 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7190.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.2ms, AutomataDifference: 5299.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 10 SDslu, 35 SDs, 0 SdLazy, 26 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3023.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2547.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.3ms SsaConstructionTime, 355.7ms SatisfiabilityAnalysisTime, 913.1ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 6 NumberOfNonLiveVariables, 211 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 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...