/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-acceleration/simple_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 17:11:22,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 17:11:22,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 17:11:22,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 17:11:22,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 17:11:22,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 17:11:22,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 17:11:22,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 17:11:22,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 17:11:22,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 17:11:22,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 17:11:22,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 17:11:22,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 17:11:22,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 17:11:22,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 17:11:22,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 17:11:22,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 17:11:22,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 17:11:22,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 17:11:22,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 17:11:22,174 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 17:11:22,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 17:11:22,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 17:11:22,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 17:11:22,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 17:11:22,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 17:11:22,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 17:11:22,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 17:11:22,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 17:11:22,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 17:11:22,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 17:11:22,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 17:11:22,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 17:11:22,203 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 17:11:22,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 17:11:22,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 17:11:22,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 17:11:22,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 17:11:22,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 17:11:22,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 17:11:22,204 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 17:11:22,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 17:11:22,204 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 17:11:22,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 17:11:22,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 17:11:22,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 17:11:22,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 17:11:22,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 17:11:22,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 17:11:22,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 17:11:22,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 17:11:22,206 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 17:11:22,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 17:11:22,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 17:11:22,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 17:11:22,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 17:11:22,416 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 17:11:22,416 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 17:11:22,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-1.c [2022-03-18 17:11:22,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e3af602/dd4b583cc189466da7fca0e2a2a02fec/FLAG804627ac1 [2022-03-18 17:11:22,825 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 17:11:22,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-1.c [2022-03-18 17:11:22,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e3af602/dd4b583cc189466da7fca0e2a2a02fec/FLAG804627ac1 [2022-03-18 17:11:22,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e3af602/dd4b583cc189466da7fca0e2a2a02fec [2022-03-18 17:11:22,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 17:11:22,849 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 17:11:22,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 17:11:22,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 17:11:22,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 17:11:22,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:11:22" (1/1) ... [2022-03-18 17:11:22,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@912e2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:22, skipping insertion in model container [2022-03-18 17:11:22,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:11:22" (1/1) ... [2022-03-18 17:11:22,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 17:11:22,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 17:11:23,034 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-acceleration/simple_2-1.c[372,385] [2022-03-18 17:11:23,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 17:11:23,057 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 17:11:23,068 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-acceleration/simple_2-1.c[372,385] [2022-03-18 17:11:23,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 17:11:23,082 INFO L208 MainTranslator]: Completed translation [2022-03-18 17:11:23,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:23 WrapperNode [2022-03-18 17:11:23,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 17:11:23,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 17:11:23,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 17:11:23,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 17:11:23,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:23" (1/1) ... [2022-03-18 17:11:23,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:23" (1/1) ... [2022-03-18 17:11:23,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:23" (1/1) ... [2022-03-18 17:11:23,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:23" (1/1) ... [2022-03-18 17:11:23,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:23" (1/1) ... [2022-03-18 17:11:23,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:23" (1/1) ... [2022-03-18 17:11:23,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:23" (1/1) ... [2022-03-18 17:11:23,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 17:11:23,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 17:11:23,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 17:11:23,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 17:11:23,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:23" (1/1) ... [2022-03-18 17:11:23,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 17:11:23,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:11:23,164 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) [2022-03-18 17:11:23,166 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 [2022-03-18 17:11:23,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 17:11:23,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 17:11:23,189 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 17:11:23,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 17:11:23,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 17:11:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 17:11:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 17:11:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 17:11:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 17:11:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-18 17:11:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 17:11:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 17:11:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 17:11:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 17:11:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 17:11:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 17:11:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 17:11:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 17:11:23,240 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 17:11:23,241 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 17:11:23,305 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 17:11:23,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 17:11:23,310 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 17:11:23,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:11:23 BoogieIcfgContainer [2022-03-18 17:11:23,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 17:11:23,312 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 17:11:23,312 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 17:11:23,314 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 17:11:23,316 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:11:23" (1/1) ... [2022-03-18 17:11:23,487 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-03-18 17:11:23,488 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_3 (+ v_main_~x~0_4 1)) (< (mod v_main_~x~0_4 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_3, main_#t~post5=|v_main_#t~post5_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post5] to Formula: (let ((.cse0 (mod v_main_~x~0_4 4294967296))) (or (and (= |v_main_#t~post5_3| |v_main_#t~post5_1|) (= v_main_~x~0_4 v_main_~x~0_3) (<= 268435455 .cse0)) (and (< v_main_~x~0_4 v_main_~x~0_3) (<= (div (+ 268435455 (* (- 1) v_main_~x~0_3)) (- 4294967296)) (+ (div (+ v_main_~x~0_4 (- 4294967295)) 4294967296) 1)) (< .cse0 268435455)))) InVars {main_~x~0=v_main_~x~0_4, main_#t~post5=|v_main_#t~post5_3|} OutVars{main_~x~0=v_main_~x~0_3, main_#t~post5=|v_main_#t~post5_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post5] [2022-03-18 17:11:23,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 05:11:23 BasicIcfg [2022-03-18 17:11:23,493 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 17:11:23,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 17:11:23,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 17:11:23,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 17:11:23,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 05:11:22" (1/4) ... [2022-03-18 17:11:23,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b391820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:11:23, skipping insertion in model container [2022-03-18 17:11:23,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:11:23" (2/4) ... [2022-03-18 17:11:23,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b391820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:11:23, skipping insertion in model container [2022-03-18 17:11:23,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:11:23" (3/4) ... [2022-03-18 17:11:23,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b391820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 05:11:23, skipping insertion in model container [2022-03-18 17:11:23,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 05:11:23" (4/4) ... [2022-03-18 17:11:23,499 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_2-1.cJordan [2022-03-18 17:11:23,503 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 17:11:23,503 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 17:11:23,536 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 17:11:23,541 INFO L340 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 [2022-03-18 17:11:23,541 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 17:11:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 17:11:23,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-18 17:11:23,555 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:11:23,555 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:11:23,556 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:11:23,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:11:23,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2022-03-18 17:11:23,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:11:23,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206735709] [2022-03-18 17:11:23,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:11:23,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:11:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:11:23,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:11:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:11:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:11:23,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:11:23,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206735709] [2022-03-18 17:11:23,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206735709] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:11:23,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:11:23,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 17:11:23,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818674624] [2022-03-18 17:11:23,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:11:23,739 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 17:11:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:11:23,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 17:11:23,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 17:11:23,770 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:11:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:11:23,815 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-03-18 17:11:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 17:11:23,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-18 17:11:23,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:11:23,827 INFO L225 Difference]: With dead ends: 18 [2022-03-18 17:11:23,828 INFO L226 Difference]: Without dead ends: 12 [2022-03-18 17:11:23,830 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 17:11:23,834 INFO L912 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:11:23,836 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:11:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-03-18 17:11:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-03-18 17:11:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:11:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-03-18 17:11:23,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-03-18 17:11:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:11:23,867 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-03-18 17:11:23,867 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:11:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-03-18 17:11:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-18 17:11:23,868 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:11:23,869 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:11:23,869 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 17:11:23,869 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:11:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:11:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2022-03-18 17:11:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:11:23,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343231335] [2022-03-18 17:11:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:11:23,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:11:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:11:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:11:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:11:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:11:24,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:11:24,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343231335] [2022-03-18 17:11:24,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343231335] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:11:24,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:11:24,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:11:24,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480430588] [2022-03-18 17:11:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:11:24,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:11:24,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:11:24,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:11:24,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:11:24,030 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:11:24,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:11:24,089 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2022-03-18 17:11:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 17:11:24,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-18 17:11:24,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:11:24,090 INFO L225 Difference]: With dead ends: 10 [2022-03-18 17:11:24,091 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 17:11:24,095 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-18 17:11:24,098 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:11:24,099 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:11:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 17:11:24,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 17:11:24,101 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) [2022-03-18 17:11:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 17:11:24,102 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-03-18 17:11:24,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:11:24,102 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 17:11:24,103 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:11:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 17:11:24,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 17:11:24,106 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 17:11:24,108 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 17:11:24,110 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-18 17:11:24,111 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 17:11:24,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 05:11:24 BasicIcfg [2022-03-18 17:11:24,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 17:11:24,114 INFO L158 Benchmark]: Toolchain (without parser) took 1265.35ms. Allocated memory was 188.7MB in the beginning and 240.1MB in the end (delta: 51.4MB). Free memory was 131.8MB in the beginning and 165.0MB in the end (delta: -33.3MB). Peak memory consumption was 18.4MB. Max. memory is 8.0GB. [2022-03-18 17:11:24,114 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 147.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 17:11:24,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.48ms. Allocated memory was 188.7MB in the beginning and 240.1MB in the end (delta: 51.4MB). Free memory was 131.5MB in the beginning and 213.8MB in the end (delta: -82.2MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-03-18 17:11:24,115 INFO L158 Benchmark]: Boogie Preprocessor took 42.88ms. Allocated memory is still 240.1MB. Free memory was 213.8MB in the beginning and 212.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 17:11:24,116 INFO L158 Benchmark]: RCFGBuilder took 183.44ms. Allocated memory is still 240.1MB. Free memory was 212.1MB in the beginning and 201.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-18 17:11:24,116 INFO L158 Benchmark]: IcfgTransformer took 180.74ms. Allocated memory is still 240.1MB. Free memory was 201.7MB in the beginning and 193.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-18 17:11:24,116 INFO L158 Benchmark]: TraceAbstraction took 619.34ms. Allocated memory is still 240.1MB. Free memory was 192.8MB in the beginning and 165.0MB in the end (delta: 27.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-03-18 17:11:24,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 147.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.48ms. Allocated memory was 188.7MB in the beginning and 240.1MB in the end (delta: 51.4MB). Free memory was 131.5MB in the beginning and 213.8MB in the end (delta: -82.2MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.88ms. Allocated memory is still 240.1MB. Free memory was 213.8MB in the beginning and 212.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 183.44ms. Allocated memory is still 240.1MB. Free memory was 212.1MB in the beginning and 201.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 180.74ms. Allocated memory is still 240.1MB. Free memory was 201.7MB in the beginning and 193.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 619.34ms. Allocated memory is still 240.1MB. Free memory was 192.8MB in the beginning and 165.0MB in the end (delta: 27.8MB). Peak memory consumption was 28.3MB. 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: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 26 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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! [2022-03-18 17:11:24,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...