/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-04-30 23:20:57,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-30 23:20:57,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-30 23:20:57,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-30 23:20:57,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-30 23:20:57,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-30 23:20:57,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-30 23:20:57,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-30 23:20:57,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-30 23:20:57,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-30 23:20:57,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-30 23:20:57,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-30 23:20:57,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-30 23:20:57,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-30 23:20:57,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-30 23:20:57,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-30 23:20:57,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-30 23:20:57,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-30 23:20:57,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-30 23:20:57,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-30 23:20:57,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-30 23:20:57,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-30 23:20:57,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-30 23:20:57,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-30 23:20:57,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-30 23:20:57,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-30 23:20:57,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-30 23:20:57,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-30 23:20:57,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-04-30 23:20:57,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-30 23:20:57,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-30 23:20:57,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-30 23:20:57,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-30 23:20:57,394 INFO L138 SettingsManager]: * Use SBE=true [2021-04-30 23:20:57,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-30 23:20:57,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-30 23:20:57,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-30 23:20:57,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-30 23:20:57,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-30 23:20:57,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-30 23:20:57,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-30 23:20:57,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-30 23:20:57,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-30 23:20:57,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-30 23:20:57,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-30 23:20:57,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-30 23:20:57,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-30 23:20:57,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-30 23:20:57,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-30 23:20:57,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-30 23:20:57,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-30 23:20:57,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-30 23:20:57,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-30 23:20:57,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-30 23:20:57,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-30 23:20:57,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-30 23:20:57,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-04-30 23:20:57,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-30 23:20:57,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-30 23:20:57,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-30 23:20:57,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-30 23:20:57,728 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-30 23:20:57,729 INFO L275 PluginConnector]: CDTParser initialized [2021-04-30 23:20:57,729 INFO L432 ainManager$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 [2021-04-30 23:20:57,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c46c7ea/00ac4a8432e949bd8978fde48c51c50c/FLAG9faa93db1 [2021-04-30 23:20:58,134 INFO L306 CDTParser]: Found 1 translation units. [2021-04-30 23:20:58,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-04-30 23:20:58,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c46c7ea/00ac4a8432e949bd8978fde48c51c50c/FLAG9faa93db1 [2021-04-30 23:20:58,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c46c7ea/00ac4a8432e949bd8978fde48c51c50c [2021-04-30 23:20:58,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-30 23:20:58,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-30 23:20:58,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-30 23:20:58,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-30 23:20:58,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-30 23:20:58,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 11:20:58" (1/1) ... [2021-04-30 23:20:58,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b338a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58, skipping insertion in model container [2021-04-30 23:20:58,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 11:20:58" (1/1) ... [2021-04-30 23:20:58,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-30 23:20:58,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-30 23:20:58,270 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-04-30 23:20:58,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-30 23:20:58,279 INFO L203 MainTranslator]: Completed pre-run [2021-04-30 23:20:58,296 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-04-30 23:20:58,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-30 23:20:58,309 INFO L208 MainTranslator]: Completed translation [2021-04-30 23:20:58,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58 WrapperNode [2021-04-30 23:20:58,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-30 23:20:58,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-30 23:20:58,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-30 23:20:58,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-30 23:20:58,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58" (1/1) ... [2021-04-30 23:20:58,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58" (1/1) ... [2021-04-30 23:20:58,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58" (1/1) ... [2021-04-30 23:20:58,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58" (1/1) ... [2021-04-30 23:20:58,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58" (1/1) ... [2021-04-30 23:20:58,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58" (1/1) ... [2021-04-30 23:20:58,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58" (1/1) ... [2021-04-30 23:20:58,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-30 23:20:58,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-30 23:20:58,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-30 23:20:58,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-30 23:20:58,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58" (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 [2021-04-30 23:20:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-30 23:20:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-30 23:20:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-30 23:20:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-30 23:20:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-30 23:20:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-30 23:20:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-30 23:20:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-30 23:20:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-30 23:20:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-30 23:20:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-30 23:20:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-30 23:20:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-30 23:20:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-30 23:20:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-30 23:20:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-30 23:20:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-30 23:20:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-30 23:20:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-30 23:20:58,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-30 23:20:58,706 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-30 23:20:58,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 11:20:58 BoogieIcfgContainer [2021-04-30 23:20:58,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-30 23:20:58,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-30 23:20:58,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-30 23:20:58,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-30 23:20:58,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 11:20:58" (1/3) ... [2021-04-30 23:20:58,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755bee72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 11:20:58, skipping insertion in model container [2021-04-30 23:20:58,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:20:58" (2/3) ... [2021-04-30 23:20:58,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755bee72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 11:20:58, skipping insertion in model container [2021-04-30 23:20:58,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 11:20:58" (3/3) ... [2021-04-30 23:20:58,713 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2021-04-30 23:20:58,716 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-30 23:20:58,719 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-30 23:20:58,740 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-30 23:20:58,763 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-30 23:20:58,763 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-30 23:20:58,763 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-30 23:20:58,763 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-30 23:20:58,763 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-30 23:20:58,763 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-30 23:20:58,763 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-30 23:20:58,763 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-30 23:20:58,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-30 23:20:58,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-30 23:20:58,783 INFO L511 BasicCegarLoop]: Found error trace [2021-04-30 23:20:58,784 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-30 23:20:58,784 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-30 23:20:58,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-30 23:20:58,789 INFO L82 PathProgramCache]: Analyzing trace with hash -782080232, now seen corresponding path program 1 times [2021-04-30 23:20:58,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-30 23:20:58,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854465882] [2021-04-30 23:20:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-30 23:20:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:20:58,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:58,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:58,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:58,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:58,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:58,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:58,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:58,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-30 23:20:58,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:58,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-30 23:20:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:20:59,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:20:59,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-04-30 23:20:59,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854465882] [2021-04-30 23:20:59,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854465882] provided 1 perfect and 0 imperfect interpolant sequences [2021-04-30 23:20:59,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-30 23:20:59,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-30 23:20:59,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707412109] [2021-04-30 23:20:59,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-30 23:20:59,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-30 23:20:59,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-30 23:20:59,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-30 23:20:59,069 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:20:59,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-30 23:20:59,210 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-04-30 23:20:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-30 23:20:59,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-04-30 23:20:59,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-30 23:20:59,216 INFO L225 Difference]: With dead ends: 33 [2021-04-30 23:20:59,216 INFO L226 Difference]: Without dead ends: 16 [2021-04-30 23:20:59,218 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-30 23:20:59,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-04-30 23:20:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-04-30 23:20:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:20:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-04-30 23:20:59,238 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-04-30 23:20:59,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-30 23:20:59,238 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-04-30 23:20:59,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:20:59,239 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-04-30 23:20:59,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-30 23:20:59,239 INFO L511 BasicCegarLoop]: Found error trace [2021-04-30 23:20:59,239 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-30 23:20:59,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-30 23:20:59,239 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-30 23:20:59,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-30 23:20:59,240 INFO L82 PathProgramCache]: Analyzing trace with hash 38085627, now seen corresponding path program 1 times [2021-04-30 23:20:59,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-30 23:20:59,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045664214] [2021-04-30 23:20:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-30 23:20:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:20:59,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-30 23:20:59,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-30 23:20:59,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-30 23:20:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:20:59,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:20:59,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-04-30 23:20:59,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045664214] [2021-04-30 23:20:59,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045664214] provided 0 perfect and 1 imperfect interpolant sequences [2021-04-30 23:20:59,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949038576] [2021-04-30 23:20:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-30 23:20:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:20:59,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-30 23:20:59,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-30 23:20:59,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-30 23:20:59,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:20:59,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-30 23:20:59,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-30 23:20:59,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:20:59,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-30 23:20:59,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-30 23:20:59,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:20:59,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-30 23:20:59,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-30 23:20:59,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:20:59,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-30 23:20:59,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-30 23:20:59,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-30 23:20:59,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-30 23:20:59,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-30 23:20:59,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-30 23:20:59,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-30 23:20:59,501 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.7 percent of original size [2021-04-30 23:20:59,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-04-30 23:20:59,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-30 23:20:59,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-30 23:20:59,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:20:59,510 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-04-30 23:20:59,514 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-04-30 23:20:59,517 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-30 23:20:59,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-30 23:20:59,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-30 23:20:59,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-30 23:20:59,535 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-30 23:20:59,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:20:59,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949038576] provided 0 perfect and 1 imperfect interpolant sequences [2021-04-30 23:20:59,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-30 23:20:59,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-04-30 23:20:59,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222879614] [2021-04-30 23:20:59,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-30 23:20:59,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-30 23:20:59,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-30 23:20:59,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-30 23:20:59,540 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 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) [2021-04-30 23:20:59,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-30 23:20:59,629 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-04-30 23:20:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-30 23:20:59,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 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 15 [2021-04-30 23:20:59,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-30 23:20:59,630 INFO L225 Difference]: With dead ends: 21 [2021-04-30 23:20:59,630 INFO L226 Difference]: Without dead ends: 18 [2021-04-30 23:20:59,631 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-04-30 23:20:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-04-30 23:20:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-04-30 23:20:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:20:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-04-30 23:20:59,634 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-04-30 23:20:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-30 23:20:59,634 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-04-30 23:20:59,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 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) [2021-04-30 23:20:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-04-30 23:20:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-30 23:20:59,635 INFO L511 BasicCegarLoop]: Found error trace [2021-04-30 23:20:59,635 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-30 23:20:59,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-04-30 23:20:59,851 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-30 23:20:59,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-30 23:20:59,851 INFO L82 PathProgramCache]: Analyzing trace with hash -2056506338, now seen corresponding path program 2 times [2021-04-30 23:20:59,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-30 23:20:59,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879193201] [2021-04-30 23:20:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-30 23:20:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:20:59,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-30 23:20:59,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-30 23:20:59,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-30 23:20:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:20:59,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:20:59,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:20:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-04-30 23:20:59,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-04-30 23:20:59,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879193201] [2021-04-30 23:20:59,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879193201] provided 1 perfect and 0 imperfect interpolant sequences [2021-04-30 23:20:59,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-30 23:20:59,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-30 23:20:59,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42461032] [2021-04-30 23:20:59,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-30 23:20:59,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-30 23:20:59,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-30 23:20:59,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-30 23:20:59,931 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:20:59,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-30 23:20:59,965 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-04-30 23:20:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-30 23:20:59,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-04-30 23:20:59,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-30 23:20:59,966 INFO L225 Difference]: With dead ends: 18 [2021-04-30 23:20:59,966 INFO L226 Difference]: Without dead ends: 0 [2021-04-30 23:20:59,966 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-30 23:20:59,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-30 23:20:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-30 23:20:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-30 23:20:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-30 23:20:59,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-04-30 23:20:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-30 23:20:59,967 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-30 23:20:59,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:20:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-30 23:20:59,967 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-30 23:20:59,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-30 23:20:59,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-30 23:21:00,013 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-04-30 23:21:00,013 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-04-30 23:21:00,014 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-04-30 23:21:00,014 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-04-30 23:21:00,014 INFO L194 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)|)) [2021-04-30 23:21:00,014 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-04-30 23:21:00,014 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-04-30 23:21:00,014 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-30 23:21:00,014 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-30 23:21:00,014 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-04-30 23:21:00,014 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-04-30 23:21:00,014 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-04-30 23:21:00,014 INFO L198 CegarLoopUtils]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-04-30 23:21:00,014 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-04-30 23:21:00,015 INFO L198 CegarLoopUtils]: For program point L32(lines 32 71) no Hoare annotation was computed. [2021-04-30 23:21:00,015 INFO L198 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2021-04-30 23:21:00,015 INFO L194 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)) [2021-04-30 23:21:00,015 INFO L198 CegarLoopUtils]: For program point L26(lines 26 72) no Hoare annotation was computed. [2021-04-30 23:21:00,015 INFO L198 CegarLoopUtils]: For program point L57(line 57) no Hoare annotation was computed. [2021-04-30 23:21:00,015 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 14 74) no Hoare annotation was computed. [2021-04-30 23:21:00,015 INFO L198 CegarLoopUtils]: For program point L55(lines 55 64) no Hoare annotation was computed. [2021-04-30 23:21:00,015 INFO L198 CegarLoopUtils]: For program point L20(lines 20 73) no Hoare annotation was computed. [2021-04-30 23:21:00,015 INFO L194 CegarLoopUtils]: At program point L46(lines 33 67) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2021-04-30 23:21:00,015 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 14 74) no Hoare annotation was computed. [2021-04-30 23:21:00,015 INFO L198 CegarLoopUtils]: For program point L40(lines 40 66) no Hoare annotation was computed. [2021-04-30 23:21:00,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 11:21:00 BoogieIcfgContainer [2021-04-30 23:21:00,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-30 23:21:00,026 INFO L168 Benchmark]: Toolchain (without parser) took 1873.80 ms. Allocated memory was 127.9 MB in the beginning and 200.3 MB in the end (delta: 72.4 MB). Free memory was 104.3 MB in the beginning and 119.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 56.0 MB. Max. memory is 8.0 GB. [2021-04-30 23:21:00,027 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 127.9 MB. Free memory is still 109.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-30 23:21:00,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.97 ms. Allocated memory is still 127.9 MB. Free memory was 104.1 MB in the beginning and 94.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-30 23:21:00,027 INFO L168 Benchmark]: Boogie Preprocessor took 65.86 ms. Allocated memory was 127.9 MB in the beginning and 200.3 MB in the end (delta: 72.4 MB). Free memory was 94.5 MB in the beginning and 182.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-04-30 23:21:00,028 INFO L168 Benchmark]: RCFGBuilder took 328.27 ms. Allocated memory is still 200.3 MB. Free memory was 182.9 MB in the beginning and 168.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-04-30 23:21:00,028 INFO L168 Benchmark]: TraceAbstraction took 1317.27 ms. Allocated memory is still 200.3 MB. Free memory was 168.3 MB in the beginning and 119.8 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.8 MB. Max. memory is 8.0 GB. [2021-04-30 23:21:00,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 127.9 MB. Free memory is still 109.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 155.97 ms. Allocated memory is still 127.9 MB. Free memory was 104.1 MB in the beginning and 94.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.86 ms. Allocated memory was 127.9 MB in the beginning and 200.3 MB in the end (delta: 72.4 MB). Free memory was 94.5 MB in the beginning and 182.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 328.27 ms. Allocated memory is still 200.3 MB. Free memory was 182.9 MB in the beginning and 168.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1317.27 ms. Allocated memory is still 200.3 MB. Free memory was 168.3 MB in the beginning and 119.8 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.8 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1206.6ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 7.2ms, AutomataDifference: 288.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 45.1ms, InitialAbstractionConstructionTime: 13.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 24 SDslu, 88 SDs, 0 SdLazy, 112 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 247.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 54 HoareAnnotationTreeSize, 5 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 8.9ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 30.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 29.6ms SsaConstructionTime, 88.3ms SatisfiabilityAnalysisTime, 438.7ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 SizeOfPredicates, 3 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 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 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y RESULT: Ultimate proved your program to be correct! Received shutdown request...