/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 -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 17:24:09,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 17:24:09,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 17:24:09,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 17:24:09,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 17:24:09,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 17:24:09,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 17:24:09,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 17:24:09,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 17:24:09,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 17:24:09,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 17:24:09,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 17:24:09,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 17:24:09,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 17:24:09,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 17:24:09,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 17:24:09,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 17:24:09,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 17:24:09,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 17:24:09,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 17:24:09,483 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 17:24:09,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 17:24:09,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 17:24:09,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 17:24:09,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 17:24:09,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 17:24:09,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 17:24:09,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 17:24:09,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 17:24:09,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 17:24:09,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 17:24:09,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 17:24:09,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 17:24:09,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 17:24:09,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 17:24:09,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 17:24:09,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 17:24:09,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 17:24:09,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 17:24:09,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 17:24:09,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 17:24:09,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 17:24:09,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 17:24:09,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 17:24:09,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 17:24:09,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 17:24:09,501 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 17:24:09,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 17:24:09,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 17:24:09,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 17:24:09,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 17:24:09,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 17:24:09,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 17:24:09,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 17:24:09,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 17:24:09,502 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 17:24:09,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 17:24:09,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 17:24:09,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 17:24:09,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 17:24:09,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 17:24:09,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 17:24:09,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 17:24:09,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 17:24:09,503 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 17:24:09,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 17:24:09,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 17:24:09,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 17:24:09,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 17:24:09,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 17:24:09,706 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 17:24:09,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i [2022-03-18 17:24:09,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faf6d521d/2865ca95fde2420ba95efabfbd10dc44/FLAGac5da187f [2022-03-18 17:24:10,075 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 17:24:10,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i [2022-03-18 17:24:10,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faf6d521d/2865ca95fde2420ba95efabfbd10dc44/FLAGac5da187f [2022-03-18 17:24:10,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faf6d521d/2865ca95fde2420ba95efabfbd10dc44 [2022-03-18 17:24:10,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 17:24:10,096 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 17:24:10,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 17:24:10,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 17:24:10,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 17:24:10,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651c1860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10, skipping insertion in model container [2022-03-18 17:24:10,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 17:24:10,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 17:24:10,256 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[891,904] [2022-03-18 17:24:10,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 17:24:10,269 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 17:24:10,276 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[891,904] [2022-03-18 17:24:10,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 17:24:10,288 INFO L208 MainTranslator]: Completed translation [2022-03-18 17:24:10,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10 WrapperNode [2022-03-18 17:24:10,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 17:24:10,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 17:24:10,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 17:24:10,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 17:24:10,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 17:24:10,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 17:24:10,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 17:24:10,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 17:24:10,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 17:24:10,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:24:10,348 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 17:24:10,353 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 17:24:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 17:24:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 17:24:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 17:24:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 17:24:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 17:24:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 17:24:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 17:24:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 17:24:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 17:24:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 17:24:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 17:24:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 17:24:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 17:24:10,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 17:24:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 17:24:10,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 17:24:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 17:24:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 17:24:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 17:24:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 17:24:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 17:24:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 17:24:10,425 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 17:24:10,427 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 17:24:10,515 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 17:24:10,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 17:24:10,519 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 17:24:10,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:24:10 BoogieIcfgContainer [2022-03-18 17:24:10,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 17:24:10,521 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 17:24:10,521 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 17:24:10,522 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 17:24:10,537 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:24:10" (1/1) ... [2022-03-18 17:24:10,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 05:24:10 BasicIcfg [2022-03-18 17:24:10,547 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 17:24:10,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 17:24:10,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 17:24:10,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 17:24:10,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 05:24:10" (1/4) ... [2022-03-18 17:24:10,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0c2478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:24:10, skipping insertion in model container [2022-03-18 17:24:10,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:24:10" (2/4) ... [2022-03-18 17:24:10,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0c2478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:24:10, skipping insertion in model container [2022-03-18 17:24:10,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:24:10" (3/4) ... [2022-03-18 17:24:10,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0c2478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 05:24:10, skipping insertion in model container [2022-03-18 17:24:10,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 05:24:10" (4/4) ... [2022-03-18 17:24:10,568 INFO L111 eAbstractionObserver]: Analyzing ICFG gauss_sum.iJordan [2022-03-18 17:24:10,572 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 17:24:10,572 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 17:24:10,596 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 17:24:10,601 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 17:24:10,601 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 17:24:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 17:24:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 17:24:10,613 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:24:10,613 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:24:10,613 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:24:10,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:24:10,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1527693123, now seen corresponding path program 1 times [2022-03-18 17:24:10,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:24:10,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406386419] [2022-03-18 17:24:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:24:10,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:24:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:24:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:24:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:24:10,806 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 17:24:10,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:24:10,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406386419] [2022-03-18 17:24:10,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406386419] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:24:10,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:24:10,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 17:24:10,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801654295] [2022-03-18 17:24:10,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:24:10,811 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 17:24:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:24:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 17:24:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 17:24:10,830 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:24:10,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:24:10,859 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-03-18 17:24:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 17:24:10,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-18 17:24:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:24:10,866 INFO L225 Difference]: With dead ends: 21 [2022-03-18 17:24:10,867 INFO L226 Difference]: Without dead ends: 14 [2022-03-18 17:24:10,868 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 17:24:10,873 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 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 17:24:10,873 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:24:10,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-18 17:24:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-18 17:24:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:24:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-18 17:24:10,895 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-03-18 17:24:10,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:24:10,895 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-18 17:24:10,896 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:24:10,896 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-18 17:24:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 17:24:10,897 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:24:10,897 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:24:10,898 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 17:24:10,898 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:24:10,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:24:10,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1526769602, now seen corresponding path program 1 times [2022-03-18 17:24:10,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:24:10,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876642310] [2022-03-18 17:24:10,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:24:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:24:10,929 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 17:24:10,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016312846] [2022-03-18 17:24:10,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:24:10,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:24:10,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:24:10,940 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) [2022-03-18 17:24:10,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 17:24:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:24:10,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 17:24:10,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:24:11,038 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 17:24:11,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 17:24:11,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:24:11,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876642310] [2022-03-18 17:24:11,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 17:24:11,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016312846] [2022-03-18 17:24:11,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016312846] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:24:11,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:24:11,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 17:24:11,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009104527] [2022-03-18 17:24:11,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:24:11,040 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 17:24:11,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:24:11,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 17:24:11,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 17:24:11,041 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 17:24:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:24:11,048 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-03-18 17:24:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 17:24:11,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-18 17:24:11,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:24:11,049 INFO L225 Difference]: With dead ends: 16 [2022-03-18 17:24:11,049 INFO L226 Difference]: Without dead ends: 16 [2022-03-18 17:24:11,050 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 17:24:11,051 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:24:11,051 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:24:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-18 17:24:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-03-18 17:24:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 17:24:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-18 17:24:11,054 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2022-03-18 17:24:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:24:11,054 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-18 17:24:11,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 17:24:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-18 17:24:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-18 17:24:11,054 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:24:11,055 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:24:11,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 17:24:11,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:24:11,272 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:24:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:24:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1730344036, now seen corresponding path program 1 times [2022-03-18 17:24:11,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:24:11,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630167556] [2022-03-18 17:24:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:24:11,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:24:11,289 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 17:24:11,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104320003] [2022-03-18 17:24:11,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:24:11,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:24:11,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:24:11,292 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) [2022-03-18 17:24:11,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 17:24:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:24:11,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-18 17:24:11,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:24:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:24:11,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:24:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:24:11,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:24:11,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630167556] [2022-03-18 17:24:11,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 17:24:11,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104320003] [2022-03-18 17:24:11,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104320003] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:24:11,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 17:24:11,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-03-18 17:24:11,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071954724] [2022-03-18 17:24:11,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 17:24:11,681 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 17:24:11,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:24:11,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 17:24:11,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-18 17:24:11,682 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:24:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:24:11,742 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-03-18 17:24:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 17:24:11,742 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-18 17:24:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:24:11,744 INFO L225 Difference]: With dead ends: 20 [2022-03-18 17:24:11,744 INFO L226 Difference]: Without dead ends: 17 [2022-03-18 17:24:11,745 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-03-18 17:24:11,748 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:24:11,749 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 44 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:24:11,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-03-18 17:24:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-03-18 17:24:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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 17:24:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-03-18 17:24:11,754 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2022-03-18 17:24:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:24:11,754 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-03-18 17:24:11,754 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:24:11,754 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-03-18 17:24:11,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-18 17:24:11,755 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:24:11,755 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:24:11,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 17:24:11,968 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 17:24:11,969 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 17:24:11,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:24:11,969 INFO L85 PathProgramCache]: Analyzing trace with hash 203120506, now seen corresponding path program 2 times [2022-03-18 17:24:11,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:24:11,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741165693] [2022-03-18 17:24:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:24:11,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:24:11,977 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 17:24:11,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357659931] [2022-03-18 17:24:11,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 17:24:11,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:24:11,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:24:11,979 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) [2022-03-18 17:24:11,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 17:24:12,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 17:24:12,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 17:24:12,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-18 17:24:12,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:24:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:24:12,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:24:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 17:24:12,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:24:12,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741165693] [2022-03-18 17:24:12,459 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 17:24:12,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357659931] [2022-03-18 17:24:12,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357659931] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:24:12,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 17:24:12,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2022-03-18 17:24:12,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446903703] [2022-03-18 17:24:12,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 17:24:12,460 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 17:24:12,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:24:12,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 17:24:12,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-03-18 17:24:12,461 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:24:12,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:24:12,669 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-03-18 17:24:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 17:24:12,669 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-03-18 17:24:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:24:12,669 INFO L225 Difference]: With dead ends: 18 [2022-03-18 17:24:12,669 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 17:24:12,670 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-03-18 17:24:12,670 INFO L912 BasicCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:24:12,671 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 59 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-03-18 17:24:12,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 17:24:12,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 17:24:12,671 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 17:24:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 17:24:12,671 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-03-18 17:24:12,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:24:12,671 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 17:24:12,671 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:24:12,672 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 17:24:12,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 17:24:12,673 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 17:24:12,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 17:24:12,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:24:12,886 INFO L718 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-03-18 17:24:12,886 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 17:24:12,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 05:24:12 BasicIcfg [2022-03-18 17:24:12,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 17:24:12,889 INFO L158 Benchmark]: Toolchain (without parser) took 2792.58ms. Allocated memory was 210.8MB in the beginning and 261.1MB in the end (delta: 50.3MB). Free memory was 163.1MB in the beginning and 174.8MB in the end (delta: -11.7MB). Peak memory consumption was 40.1MB. Max. memory is 8.0GB. [2022-03-18 17:24:12,889 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 210.8MB. Free memory is still 179.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 17:24:12,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.82ms. Allocated memory is still 210.8MB. Free memory was 163.0MB in the beginning and 187.7MB in the end (delta: -24.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-18 17:24:12,889 INFO L158 Benchmark]: Boogie Preprocessor took 22.50ms. Allocated memory is still 210.8MB. Free memory was 187.7MB in the beginning and 186.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 17:24:12,889 INFO L158 Benchmark]: RCFGBuilder took 207.88ms. Allocated memory is still 210.8MB. Free memory was 186.0MB in the beginning and 176.2MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-18 17:24:12,889 INFO L158 Benchmark]: IcfgTransformer took 26.34ms. Allocated memory is still 210.8MB. Free memory was 176.2MB in the beginning and 175.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 17:24:12,890 INFO L158 Benchmark]: TraceAbstraction took 2340.02ms. Allocated memory was 210.8MB in the beginning and 261.1MB in the end (delta: 50.3MB). Free memory was 174.5MB in the beginning and 174.8MB in the end (delta: -261.0kB). Peak memory consumption was 51.0MB. Max. memory is 8.0GB. [2022-03-18 17:24:12,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 210.8MB. Free memory is still 179.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.82ms. Allocated memory is still 210.8MB. Free memory was 163.0MB in the beginning and 187.7MB in the end (delta: -24.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.50ms. Allocated memory is still 210.8MB. Free memory was 187.7MB in the beginning and 186.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 207.88ms. Allocated memory is still 210.8MB. Free memory was 186.0MB in the beginning and 176.2MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 26.34ms. Allocated memory is still 210.8MB. Free memory was 176.2MB in the beginning and 175.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2340.02ms. Allocated memory was 210.8MB in the beginning and 261.1MB in the end (delta: 50.3MB). Free memory was 174.5MB in the beginning and 174.8MB in the end (delta: -261.0kB). Peak memory consumption was 51.0MB. 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: 19]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 148 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 12 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 51 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 28, 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 78 ConstructedInterpolants, 3 QuantifiedInterpolants, 361 SizeOfPredicates, 8 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/10 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 17:24:12,907 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...