/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.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 16:14:05,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 16:14:05,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 16:14:05,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 16:14:05,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 16:14:05,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 16:14:05,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 16:14:05,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 16:14:05,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 16:14:05,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 16:14:05,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 16:14:05,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 16:14:05,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 16:14:05,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 16:14:05,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 16:14:05,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 16:14:05,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 16:14:05,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 16:14:05,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 16:14:05,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 16:14:05,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 16:14:05,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 16:14:05,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 16:14:05,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 16:14:05,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 16:14:05,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 16:14:05,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 16:14:05,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 16:14:05,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 16:14:05,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 16:14:05,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 16:14:05,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 16:14:05,767 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 16:14:05,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 16:14:05,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 16:14:05,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 16:14:05,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 16:14:05,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 16:14:05,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 16:14:05,768 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 16:14:05,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 16:14:05,769 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 16:14:05,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 16:14:05,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 16:14:05,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 16:14:05,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 16:14:05,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 16:14:05,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 16:14:05,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 16:14:05,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 16:14:05,770 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 16:14:05,770 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 16:14:05,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 16:14:05,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 16:14:05,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 16:14:05,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 16:14:05,991 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 16:14:05,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2022-02-23 16:14:06,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b38ef4de7/9182730f0cad4dd1ab8d28ff203208e8/FLAG822c3f282 [2022-02-23 16:14:06,387 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 16:14:06,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2022-02-23 16:14:06,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b38ef4de7/9182730f0cad4dd1ab8d28ff203208e8/FLAG822c3f282 [2022-02-23 16:14:06,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b38ef4de7/9182730f0cad4dd1ab8d28ff203208e8 [2022-02-23 16:14:06,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 16:14:06,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 16:14:06,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 16:14:06,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 16:14:06,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 16:14:06,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:14:06" (1/1) ... [2022-02-23 16:14:06,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112addcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06, skipping insertion in model container [2022-02-23 16:14:06,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:14:06" (1/1) ... [2022-02-23 16:14:06,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 16:14:06,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 16:14:06,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2022-02-23 16:14:06,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 16:14:06,976 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 16:14:06,985 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2022-02-23 16:14:06,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 16:14:06,994 INFO L208 MainTranslator]: Completed translation [2022-02-23 16:14:06,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06 WrapperNode [2022-02-23 16:14:06,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 16:14:06,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 16:14:06,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 16:14:06,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 16:14:07,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06" (1/1) ... [2022-02-23 16:14:07,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06" (1/1) ... [2022-02-23 16:14:07,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06" (1/1) ... [2022-02-23 16:14:07,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06" (1/1) ... [2022-02-23 16:14:07,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06" (1/1) ... [2022-02-23 16:14:07,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06" (1/1) ... [2022-02-23 16:14:07,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06" (1/1) ... [2022-02-23 16:14:07,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 16:14:07,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 16:14:07,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 16:14:07,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 16:14:07,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06" (1/1) ... [2022-02-23 16:14:07,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 16:14:07,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:14:07,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 16:14:07,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 16:14:07,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 16:14:07,060 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 16:14:07,060 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 16:14:07,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 16:14:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 16:14:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 16:14:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 16:14:07,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 16:14:07,114 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 16:14:07,115 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 16:14:07,230 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 16:14:07,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 16:14:07,234 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-23 16:14:07,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:14:07 BoogieIcfgContainer [2022-02-23 16:14:07,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 16:14:07,236 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 16:14:07,236 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 16:14:07,237 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 16:14:07,240 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:14:07" (1/1) ... [2022-02-23 16:14:08,180 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-23 16:14:08,181 INFO L91 elerationTransformer]: Accelerated Formula: (and (= (+ v_main_~main__sum~0_4 v_main_~main__i~0_4) v_main_~main__sum~0_3) (= (+ v_main_~main__i~0_4 1) v_main_~main__i~0_3) (<= v_main_~main__i~0_4 v_main_~main__n~0_2)) InVars {main_~main__n~0=v_main_~main__n~0_2, main_~main__sum~0=v_main_~main__sum~0_4, main_~main__i~0=v_main_~main__i~0_4} OutVars{main_~main__n~0=v_main_~main__n~0_2, main_~main__sum~0=v_main_~main__sum~0_3, main_~main__i~0=v_main_~main__i~0_3} AuxVars[] AssignedVars[main_~main__sum~0, main_~main__i~0] to Formula: (let ((.cse1 (* (- 1) v_main_~main__i~0_4))) (or (let ((.cse0 (div (+ .cse1 v_main_~main__i~0_3) 2))) (and (= (mod (+ v_main_~main__i~0_4 v_main_~main__i~0_3) 2) 0) (= (+ (* (* .cse0 .cse0) 2) (* (* .cse0 v_main_~main__i~0_4) 2) v_main_~main__sum~0_4) (+ .cse0 v_main_~main__sum~0_3)) (<= .cse0 (+ (div (+ (- 1) .cse1 v_main_~main__n~0_2) 2) 1)) (< 0 .cse0))) (and (not (<= v_main_~main__i~0_4 v_main_~main__n~0_2)) (= v_main_~main__i~0_4 v_main_~main__i~0_3) (= v_main_~main__sum~0_4 v_main_~main__sum~0_3)) (let ((.cse2 (div (+ (- 1) .cse1 v_main_~main__i~0_3) 2))) (and (= (+ .cse2 v_main_~main__sum~0_4 (* 2 (* .cse2 .cse2)) (* 2 (* .cse2 v_main_~main__i~0_4)) v_main_~main__i~0_4) v_main_~main__sum~0_3) (<= 0 .cse2) (= (mod (+ v_main_~main__i~0_4 v_main_~main__i~0_3 1) 2) 0) (<= .cse2 (div (+ .cse1 v_main_~main__n~0_2) 2)))))) InVars {main_~main__n~0=v_main_~main__n~0_2, main_~main__sum~0=v_main_~main__sum~0_4, main_~main__i~0=v_main_~main__i~0_4} OutVars{main_~main__n~0=v_main_~main__n~0_2, main_~main__sum~0=v_main_~main__sum~0_3, main_~main__i~0=v_main_~main__i~0_3} AuxVars[] AssignedVars[main_~main__sum~0, main_~main__i~0] [2022-02-23 16:14:08,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 04:14:08 BasicIcfg [2022-02-23 16:14:08,187 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 16:14:08,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 16:14:08,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 16:14:08,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 16:14:08,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:14:06" (1/4) ... [2022-02-23 16:14:08,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789f3380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:14:08, skipping insertion in model container [2022-02-23 16:14:08,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:14:06" (2/4) ... [2022-02-23 16:14:08,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789f3380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:14:08, skipping insertion in model container [2022-02-23 16:14:08,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:14:07" (3/4) ... [2022-02-23 16:14:08,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789f3380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:14:08, skipping insertion in model container [2022-02-23 16:14:08,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 04:14:08" (4/4) ... [2022-02-23 16:14:08,192 INFO L111 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.cJordan [2022-02-23 16:14:08,195 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 16:14:08,195 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 16:14:08,221 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 16:14:08,230 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 16:14:08,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 16:14:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2022-02-23 16:14:08,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-23 16:14:08,246 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:14:08,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:14:08,247 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:14:08,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:14:08,254 INFO L85 PathProgramCache]: Analyzing trace with hash 456799944, now seen corresponding path program 1 times [2022-02-23 16:14:08,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:14:08,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474897192] [2022-02-23 16:14:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:14:08,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:14:08,358 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 16:14:08,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123305377] [2022-02-23 16:14:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:14:08,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:14:08,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:14:08,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 16:14:08,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 16:14:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:14:08,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-23 16:14:08,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:14:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:14:08,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 16:14:08,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:14:08,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474897192] [2022-02-23 16:14:08,646 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 16:14:08,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123305377] [2022-02-23 16:14:08,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123305377] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 16:14:08,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 16:14:08,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-23 16:14:08,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445390142] [2022-02-23 16:14:08,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 16:14:08,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 16:14:08,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:14:08,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 16:14:08,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-23 16:14:08,671 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2022-02-23 16:14:08,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:14:08,787 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-02-23 16:14:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 16:14:08,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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 16 [2022-02-23 16:14:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:14:08,793 INFO L225 Difference]: With dead ends: 35 [2022-02-23 16:14:08,793 INFO L226 Difference]: Without dead ends: 18 [2022-02-23 16:14:08,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-02-23 16:14:08,798 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 16:14:08,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 194 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 16:14:08,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-23 16:14:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-02-23 16:14:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-02-23 16:14:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-02-23 16:14:08,817 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2022-02-23 16:14:08,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:14:08,817 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-02-23 16:14:08,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2022-02-23 16:14:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-02-23 16:14:08,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 16:14:08,818 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:14:08,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:14:08,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 16:14:09,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-02-23 16:14:09,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:14:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:14:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1275865648, now seen corresponding path program 1 times [2022-02-23 16:14:09,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:14:09,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313697017] [2022-02-23 16:14:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:14:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:14:09,040 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 16:14:09,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051625353] [2022-02-23 16:14:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:14:09,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:14:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:14:09,048 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 16:14:09,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 16:14:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 16:14:09,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-23 16:14:09,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:14:12,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:14:12,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 16:15:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:15:40,736 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:15:40,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313697017] [2022-02-23 16:15:40,736 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 16:15:40,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051625353] [2022-02-23 16:15:40,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051625353] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 16:15:40,737 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 16:15:40,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-02-23 16:15:40,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828755889] [2022-02-23 16:15:40,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 16:15:40,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-23 16:15:40,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:15:40,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-23 16:15:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=176, Unknown=30, NotChecked=0, Total=272 [2022-02-23 16:15:40,739 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2022-02-23 16:15:44,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-23 16:15:46,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-23 16:15:57,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:15:57,054 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-02-23 16:15:57,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 16:15:57,054 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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 17 [2022-02-23 16:15:57,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:15:57,055 INFO L225 Difference]: With dead ends: 20 [2022-02-23 16:15:57,055 INFO L226 Difference]: Without dead ends: 19 [2022-02-23 16:15:57,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 99.4s TimeCoverageRelationStatistics Valid=112, Invalid=315, Unknown=35, NotChecked=0, Total=462 [2022-02-23 16:15:57,056 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-02-23 16:15:57,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 73 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 2 Unknown, 28 Unchecked, 4.3s Time] [2022-02-23 16:15:57,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-02-23 16:15:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-02-23 16:15:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-02-23 16:15:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-02-23 16:15:57,058 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2022-02-23 16:15:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:15:57,059 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-02-23 16:15:57,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2022-02-23 16:15:57,060 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-02-23 16:15:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-23 16:15:57,060 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 16:15:57,060 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 16:15:57,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 16:15:57,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-02-23 16:15:57,261 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 16:15:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 16:15:57,261 INFO L85 PathProgramCache]: Analyzing trace with hash 897098696, now seen corresponding path program 2 times [2022-02-23 16:15:57,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 16:15:57,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077679788] [2022-02-23 16:15:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 16:15:57,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 16:15:57,272 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 16:15:57,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653241592] [2022-02-23 16:15:57,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 16:15:57,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:15:57,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 16:15:57,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 16:15:57,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 16:16:06,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 16:16:06,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 16:16:06,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-23 16:16:06,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 16:16:19,434 WARN L232 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:16:27,564 WARN L232 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 14 DAG size of output: 1 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-02-23 16:16:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:16:35,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 16:17:11,985 WARN L232 SmtUtils]: Spent 10.87s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:17:35,816 WARN L232 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 147 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:18:08,070 WARN L232 SmtUtils]: Spent 11.40s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:18:37,615 WARN L232 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:19:06,365 WARN L232 SmtUtils]: Spent 7.35s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:19:35,360 WARN L232 SmtUtils]: Spent 7.67s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:19:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 16:19:39,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 16:19:39,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077679788] [2022-02-23 16:19:39,696 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 16:19:39,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653241592] [2022-02-23 16:19:39,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653241592] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 16:19:39,696 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 16:19:39,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2022-02-23 16:19:39,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465388254] [2022-02-23 16:19:39,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 16:19:39,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-23 16:19:39,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 16:19:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-23 16:19:39,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=253, Unknown=50, NotChecked=0, Total=380 [2022-02-23 16:19:39,698 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2022-02-23 16:19:51,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-23 16:20:24,875 WARN L232 SmtUtils]: Spent 19.15s on a formula simplification. DAG size of input: 164 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-23 16:20:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 16:20:24,877 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-02-23 16:20:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-23 16:20:24,877 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 18 [2022-02-23 16:20:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 16:20:24,877 INFO L225 Difference]: With dead ends: 17 [2022-02-23 16:20:24,877 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 16:20:24,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 227.6s TimeCoverageRelationStatistics Valid=117, Invalid=375, Unknown=60, NotChecked=0, Total=552 [2022-02-23 16:20:24,878 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-23 16:20:24,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 46 Unchecked, 1.1s Time] [2022-02-23 16:20:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 16:20:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 16:20:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-23 16:20:24,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 16:20:24,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-02-23 16:20:24,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 16:20:24,880 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 16:20:24,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2022-02-23 16:20:24,880 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 16:20:24,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 16:20:24,882 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 16:20:24,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-23 16:20:25,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 16:20:25,091 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2022-02-23 16:20:25,092 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 16:20:25,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:20:25 BasicIcfg [2022-02-23 16:20:25,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 16:20:25,094 INFO L158 Benchmark]: Toolchain (without parser) took 378279.60ms. Allocated memory was 201.3MB in the beginning and 268.4MB in the end (delta: 67.1MB). Free memory was 152.5MB in the beginning and 138.5MB in the end (delta: 14.0MB). Peak memory consumption was 82.1MB. Max. memory is 8.0GB. [2022-02-23 16:20:25,095 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory was 169.3MB in the beginning and 169.1MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 16:20:25,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.54ms. Allocated memory is still 201.3MB. Free memory was 152.3MB in the beginning and 178.4MB in the end (delta: -26.0MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2022-02-23 16:20:25,095 INFO L158 Benchmark]: Boogie Preprocessor took 16.78ms. Allocated memory is still 201.3MB. Free memory was 178.4MB in the beginning and 177.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 16:20:25,095 INFO L158 Benchmark]: RCFGBuilder took 223.29ms. Allocated memory is still 201.3MB. Free memory was 176.8MB in the beginning and 166.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 16:20:25,095 INFO L158 Benchmark]: IcfgTransformer took 951.12ms. Allocated memory is still 201.3MB. Free memory was 166.3MB in the beginning and 150.1MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-02-23 16:20:25,096 INFO L158 Benchmark]: TraceAbstraction took 376905.16ms. Allocated memory was 201.3MB in the beginning and 268.4MB in the end (delta: 67.1MB). Free memory was 149.5MB in the beginning and 138.5MB in the end (delta: 11.0MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2022-02-23 16:20:25,099 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 0.10ms. Allocated memory is still 201.3MB. Free memory was 169.3MB in the beginning and 169.1MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 176.54ms. Allocated memory is still 201.3MB. Free memory was 152.3MB in the beginning and 178.4MB in the end (delta: -26.0MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.78ms. Allocated memory is still 201.3MB. Free memory was 178.4MB in the beginning and 177.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 223.29ms. Allocated memory is still 201.3MB. Free memory was 176.8MB in the beginning and 166.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 951.12ms. Allocated memory is still 201.3MB. Free memory was 166.3MB in the beginning and 150.1MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 376905.16ms. Allocated memory was 201.3MB in the beginning and 268.4MB in the end (delta: 67.1MB). Free memory was 149.5MB in the beginning and 138.5MB in the end (delta: 11.0MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 376.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 61.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 321 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 74 IncrementalHoareTripleChecker+Unchecked, 277 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 174 IncrementalHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 44 mSDtfsCounter, 174 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 327.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 10.2s SatisfiabilityAnalysisTime, 304.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 81 ConstructedInterpolants, 14 QuantifiedInterpolants, 7009 SizeOfPredicates, 13 NumberOfNonLiveVariables, 291 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-23 16:20:25,312 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-02-23 16:20:25,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...