/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:28:50,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:28:50,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:28:50,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:28:50,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:28:50,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:28:50,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:28:50,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:28:50,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:28:50,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:28:50,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:28:50,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:28:50,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:28:50,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:28:50,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:28:50,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:28:50,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:28:50,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:28:50,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:28:50,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:28:50,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:28:50,578 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:28:50,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:28:50,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:28:50,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:28:50,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:28:50,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:28:50,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:28:50,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:28:50,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:28:50,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:28:50,594 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:28:50,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:28:50,595 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:28:50,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:28:50,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:28:50,596 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:28:50,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:28:50,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:28:50,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:28:50,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:28:50,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:28:50,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:28:50,599 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:28:51,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:28:51,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:28:51,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:28:51,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:28:51,339 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:28:51,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-02-21 21:28:51,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d6e3d88/0f00b3cc197b4d2fbe06fb943c5a90fb/FLAG0aaf3ada2 [2021-02-21 21:28:52,476 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:28:52,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-02-21 21:28:52,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d6e3d88/0f00b3cc197b4d2fbe06fb943c5a90fb/FLAG0aaf3ada2 [2021-02-21 21:28:52,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d6e3d88/0f00b3cc197b4d2fbe06fb943c5a90fb [2021-02-21 21:28:52,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:28:52,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:28:52,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:28:52,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:28:52,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:28:52,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:28:52" (1/1) ... [2021-02-21 21:28:52,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3035d5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52, skipping insertion in model container [2021-02-21 21:28:52,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:28:52" (1/1) ... [2021-02-21 21:28:52,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:28:52,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:28:52,873 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-02-21 21:28:52,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:28:52,895 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:28:52,919 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-02-21 21:28:52,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:28:52,947 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:28:52,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52 WrapperNode [2021-02-21 21:28:52,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:28:52,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:28:52,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:28:52,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:28:52,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52" (1/1) ... [2021-02-21 21:28:52,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52" (1/1) ... [2021-02-21 21:28:52,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52" (1/1) ... [2021-02-21 21:28:52,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52" (1/1) ... [2021-02-21 21:28:52,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52" (1/1) ... [2021-02-21 21:28:53,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52" (1/1) ... [2021-02-21 21:28:53,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52" (1/1) ... [2021-02-21 21:28:53,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:28:53,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:28:53,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:28:53,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:28:53,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:28:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:28:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:28:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:28:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:28:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:28:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:28:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:28:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:28:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:28:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:28:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:28:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:28:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:28:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:28:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:28:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:28:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:28:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:28:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:28:53,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:28:53,776 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 21:28:53,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:28:53 BoogieIcfgContainer [2021-02-21 21:28:53,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:28:53,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:28:53,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:28:53,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:28:53,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:28:52" (1/3) ... [2021-02-21 21:28:53,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5588b712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:28:53, skipping insertion in model container [2021-02-21 21:28:53,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:28:52" (2/3) ... [2021-02-21 21:28:53,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5588b712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:28:53, skipping insertion in model container [2021-02-21 21:28:53,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:28:53" (3/3) ... [2021-02-21 21:28:53,805 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2021-02-21 21:28:53,819 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:28:53,826 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:28:53,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:28:53,907 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:28:53,908 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:28:53,908 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:28:53,908 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:28:53,908 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:28:53,908 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:28:53,909 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:28:53,909 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:28:53,946 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-21 21:28:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 21:28:53,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:28:53,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:28:53,971 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:28:53,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:28:53,980 INFO L82 PathProgramCache]: Analyzing trace with hash -415268847, now seen corresponding path program 1 times [2021-02-21 21:28:53,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:28:53,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106845367] [2021-02-21 21:28:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:28:54,093 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:28:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:28:54,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:54,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:28:54,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:54,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:28:54,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:54,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:28:54,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:54,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:28:54,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:54,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:28:54,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:54,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:28:54,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:54,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:28:54,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:54,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:28:54,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:28:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:28:54,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:54,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:28:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:28:54,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106845367] [2021-02-21 21:28:54,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:28:54,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:28:54,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822097509] [2021-02-21 21:28:54,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:28:54,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:28:54,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:28:54,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:28:54,645 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 9 states. [2021-02-21 21:28:55,108 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-02-21 21:28:55,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:28:55,504 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-02-21 21:28:55,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:28:55,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2021-02-21 21:28:55,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:28:55,535 INFO L225 Difference]: With dead ends: 73 [2021-02-21 21:28:55,535 INFO L226 Difference]: Without dead ends: 44 [2021-02-21 21:28:55,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-02-21 21:28:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-21 21:28:55,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-02-21 21:28:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-21 21:28:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-02-21 21:28:55,619 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2021-02-21 21:28:55,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:28:55,620 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-02-21 21:28:55,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:28:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-02-21 21:28:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 21:28:55,622 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:28:55,623 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:28:55,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:28:55,623 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:28:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:28:55,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1860062218, now seen corresponding path program 1 times [2021-02-21 21:28:55,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:28:55,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072505896] [2021-02-21 21:28:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:28:55,658 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:28:55,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:28:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:28:55,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:28:55,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:28:55,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:28:55,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:28:55,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:28:55,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:28:55,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:28:55,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:28:55,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:28:55,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:28:55,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:28:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:28:55,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:55,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:28:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:28:55,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072505896] [2021-02-21 21:28:55,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:28:55,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:28:55,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512395481] [2021-02-21 21:28:55,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:28:55,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:28:55,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:28:55,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:28:55,932 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 11 states. [2021-02-21 21:28:56,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:28:56,402 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-02-21 21:28:56,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:28:56,404 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2021-02-21 21:28:56,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:28:56,406 INFO L225 Difference]: With dead ends: 57 [2021-02-21 21:28:56,406 INFO L226 Difference]: Without dead ends: 50 [2021-02-21 21:28:56,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-02-21 21:28:56,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-21 21:28:56,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-02-21 21:28:56,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-21 21:28:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-02-21 21:28:56,426 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2021-02-21 21:28:56,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:28:56,427 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-02-21 21:28:56,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:28:56,428 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-02-21 21:28:56,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-21 21:28:56,430 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:28:56,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:28:56,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:28:56,431 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:28:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:28:56,432 INFO L82 PathProgramCache]: Analyzing trace with hash -112941029, now seen corresponding path program 2 times [2021-02-21 21:28:56,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:28:56,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016794491] [2021-02-21 21:28:56,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:28:56,445 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:28:56,448 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:28:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:28:56,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:56,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:28:56,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:56,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:28:56,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:56,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:28:56,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:56,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:28:56,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:56,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:28:56,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:56,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:28:56,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:56,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:28:56,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:56,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:28:56,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:28:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:28:56,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:28:56,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:28:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:28:56,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016794491] [2021-02-21 21:28:56,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:28:56,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:28:56,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045703717] [2021-02-21 21:28:56,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:28:56,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:28:56,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:28:56,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:28:56,677 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 9 states. [2021-02-21 21:28:57,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:28:57,004 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-02-21 21:28:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:28:57,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-02-21 21:28:57,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:28:57,006 INFO L225 Difference]: With dead ends: 49 [2021-02-21 21:28:57,006 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:28:57,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-02-21 21:28:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:28:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:28:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:28:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:28:57,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-02-21 21:28:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:28:57,009 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:28:57,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:28:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:28:57,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:28:57,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:28:57,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:28:57,901 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-21 21:28:57,901 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-21 21:28:57,902 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-21 21:28:57,902 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-21 21:28:57,902 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-21 21:28:57,902 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:28:57,903 INFO L192 CegarLoopUtils]: At program point L4-5(line 4) the Hoare annotation is: true [2021-02-21 21:28:57,903 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:28:57,903 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:28:57,903 INFO L192 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: true [2021-02-21 21:28:57,903 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:28:57,903 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~__return_65~0 |old(~__return_65~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-21 21:28:57,904 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-21 21:28:57,904 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-21 21:28:57,904 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-21 21:28:57,904 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:28:57,904 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:28:57,905 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:28:57,905 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:28:57,905 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:28:57,905 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-02-21 21:28:57,905 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-21 21:28:57,905 INFO L189 CegarLoopUtils]: For program point L7-1(line 7) no Hoare annotation was computed. [2021-02-21 21:28:57,906 INFO L189 CegarLoopUtils]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2021-02-21 21:28:57,906 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-02-21 21:28:57,906 INFO L185 CegarLoopUtils]: At program point L62(line 62) the Hoare annotation is: (not (= main_~__VERIFIER_assert__cond~0 0)) [2021-02-21 21:28:57,906 INFO L185 CegarLoopUtils]: At program point L58(line 58) the Hoare annotation is: false [2021-02-21 21:28:57,906 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 14 74) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0))) [2021-02-21 21:28:57,907 INFO L185 CegarLoopUtils]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and .cse0 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))))) [2021-02-21 21:28:57,907 INFO L185 CegarLoopUtils]: At program point L52(line 52) the Hoare annotation is: (or (and (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))) (and (<= 2 main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0))) [2021-02-21 21:28:57,907 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-21 21:28:57,907 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-21 21:28:57,908 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2021-02-21 21:28:57,908 INFO L185 CegarLoopUtils]: At program point L19-2(line 19) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-21 21:28:57,908 INFO L185 CegarLoopUtils]: At program point L46(lines 33 67) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2021-02-21 21:28:57,908 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 14 74) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0))) [2021-02-21 21:28:57,909 INFO L185 CegarLoopUtils]: At program point L44(line 44) the Hoare annotation is: (<= (+ main_~main__x~0 1) main_~main__y~0) [2021-02-21 21:28:57,909 INFO L185 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (and (<= (+ main_~main__x~0 1) 0) (<= (+ main_~main__x~0 2) main_~main__y~0)) [2021-02-21 21:28:57,909 INFO L185 CegarLoopUtils]: At program point L40(lines 40 66) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2021-02-21 21:28:57,909 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) main_~main__y~0)) [2021-02-21 21:28:57,909 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-21 21:28:57,910 INFO L185 CegarLoopUtils]: At program point L32(lines 32 71) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-21 21:28:57,910 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) the Hoare annotation is: false [2021-02-21 21:28:57,910 INFO L185 CegarLoopUtils]: At program point L63(line 63) the Hoare annotation is: (not (= main_~__VERIFIER_assert__cond~0 0)) [2021-02-21 21:28:57,910 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 14 74) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2021-02-21 21:28:57,911 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= 51 main_~main__y~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-21 21:28:57,911 INFO L185 CegarLoopUtils]: At program point L26(lines 26 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-21 21:28:57,911 INFO L185 CegarLoopUtils]: At program point L57(line 57) the Hoare annotation is: false [2021-02-21 21:28:57,911 INFO L185 CegarLoopUtils]: At program point L55(lines 55 64) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0))) (.cse1 (not (= main_~__VERIFIER_assert__cond~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 .cse1 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and .cse0 .cse1 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))))) [2021-02-21 21:28:57,912 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-21 21:28:57,912 INFO L185 CegarLoopUtils]: At program point L53(line 53) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and .cse0 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))))) [2021-02-21 21:28:57,912 INFO L185 CegarLoopUtils]: At program point L20(lines 20 73) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-21 21:28:57,912 INFO L185 CegarLoopUtils]: At program point L51(line 51) the Hoare annotation is: (or (and (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))) (and (<= 2 main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0))) [2021-02-21 21:28:57,912 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2021-02-21 21:28:57,913 INFO L185 CegarLoopUtils]: At program point L45(line 45) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2021-02-21 21:28:57,913 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (<= (+ main_~main__x~0 1) main_~main__y~0) [2021-02-21 21:28:57,913 INFO L185 CegarLoopUtils]: At program point L70(line 70) the Hoare annotation is: false [2021-02-21 21:28:57,913 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 51) main_~main__y~0)) [2021-02-21 21:28:57,913 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) main_~main__y~0)) [2021-02-21 21:28:57,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:28:57 BoogieIcfgContainer [2021-02-21 21:28:57,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:28:57,945 INFO L168 Benchmark]: Toolchain (without parser) took 5398.29 ms. Allocated memory was 168.8 MB in the beginning and 218.1 MB in the end (delta: 49.3 MB). Free memory was 145.8 MB in the beginning and 195.0 MB in the end (delta: -49.2 MB). Peak memory consumption was 119.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:28:57,946 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 168.8 MB. Free memory is still 142.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:28:57,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.07 ms. Allocated memory is still 168.8 MB. Free memory was 144.8 MB in the beginning and 134.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:28:57,948 INFO L168 Benchmark]: Boogie Preprocessor took 57.23 ms. Allocated memory is still 168.8 MB. Free memory was 134.9 MB in the beginning and 133.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:28:57,949 INFO L168 Benchmark]: RCFGBuilder took 770.86 ms. Allocated memory is still 168.8 MB. Free memory was 133.6 MB in the beginning and 148.7 MB in the end (delta: -15.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:28:57,950 INFO L168 Benchmark]: TraceAbstraction took 4161.52 ms. Allocated memory was 168.8 MB in the beginning and 218.1 MB in the end (delta: 49.3 MB). Free memory was 148.2 MB in the beginning and 195.0 MB in the end (delta: -46.8 MB). Peak memory consumption was 122.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:28:57,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 168.8 MB. Free memory is still 142.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 377.07 ms. Allocated memory is still 168.8 MB. Free memory was 144.8 MB in the beginning and 134.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.23 ms. Allocated memory is still 168.8 MB. Free memory was 134.9 MB in the beginning and 133.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 770.86 ms. Allocated memory is still 168.8 MB. Free memory was 133.6 MB in the beginning and 148.7 MB in the end (delta: -15.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4161.52 ms. Allocated memory was 168.8 MB in the beginning and 218.1 MB in the end (delta: 49.3 MB). Free memory was 148.2 MB in the beginning and 195.0 MB in the end (delta: -46.8 MB). Peak memory consumption was 122.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 57]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: !(__VERIFIER_assert__cond == 0) || ((__tmp_55_0 == \old(__tmp_55_0) && \old(__return_65) == __return_65) && main__x + 50 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 135 SDslu, 373 SDs, 0 SdLazy, 422 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 51 LocationsWithAnnotation, 51 PreInvPairs, 81 NumberOfFragments, 443 HoareAnnotationTreeSize, 51 FomulaSimplifications, 179 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 51 FomulaSimplificationsInter, 768 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...