/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/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:43:52,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:43:52,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:43:52,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:43:52,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:43:52,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:43:52,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:43:52,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:43:52,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:43:52,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:43:52,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:43:52,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:43:52,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:43:52,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:43:52,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:43:52,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:43:52,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:43:52,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:43:52,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:43:52,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:43:52,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:43:52,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:43:52,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:43:52,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:43:52,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:43:52,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:43:52,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:43:52,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:43:52,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:43:52,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:43:52,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:43:52,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:43:52,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:43:52,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:43:52,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:43:52,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:43:52,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:43:52,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:43:52,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:43:52,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:43:52,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:43:52,146 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 [2020-11-06 22:43:52,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:43:52,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:43:52,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:43:52,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:43:52,209 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:43:52,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:43:52,209 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:43:52,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:43:52,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:43:52,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:43:52,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:43:52,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:43:52,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:43:52,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:43:52,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:43:52,211 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:43:52,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:43:52,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:43:52,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:43:52,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:43:52,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:43:52,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:43:52,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:43:52,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:43:52,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:43:52,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:43:52,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:43:52,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:43:52,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:43:52,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:43:52,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:43:52,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:43:52,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:43:52,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:43:52,751 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:43:52,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-11-06 22:43:52,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a48cedc5/7c1ee0266b6f439c9dfa8fd8739f0548/FLAG7bf035606 [2020-11-06 22:43:53,573 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:43:53,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c [2020-11-06 22:43:53,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a48cedc5/7c1ee0266b6f439c9dfa8fd8739f0548/FLAG7bf035606 [2020-11-06 22:43:53,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a48cedc5/7c1ee0266b6f439c9dfa8fd8739f0548 [2020-11-06 22:43:53,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:43:53,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:43:53,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:43:53,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:43:53,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:43:53,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:53" (1/1) ... [2020-11-06 22:43:53,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9f139f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:53, skipping insertion in model container [2020-11-06 22:43:53,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:53" (1/1) ... [2020-11-06 22:43:53,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:43:53,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:43:54,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:43:54,286 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:43:54,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:43:54,350 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:43:54,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:54 WrapperNode [2020-11-06 22:43:54,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:43:54,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:43:54,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:43:54,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:43:54,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:54" (1/1) ... [2020-11-06 22:43:54,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:54" (1/1) ... [2020-11-06 22:43:54,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:54" (1/1) ... [2020-11-06 22:43:54,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:54" (1/1) ... [2020-11-06 22:43:54,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:54" (1/1) ... [2020-11-06 22:43:54,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:54" (1/1) ... [2020-11-06 22:43:54,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:54" (1/1) ... [2020-11-06 22:43:54,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:43:54,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:43:54,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:43:54,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:43:54,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:54" (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 [2020-11-06 22:43:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:43:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:43:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:43:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:43:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:43:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:43:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:43:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:43:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:43:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:43:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:43:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:43:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:43:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:43:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:43:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:43:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:43:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:43:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:43:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:43:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:43:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:43:54,932 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:43:54,933 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-06 22:43:54,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:54 BoogieIcfgContainer [2020-11-06 22:43:54,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:43:54,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:43:54,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:43:54,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:43:54,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:43:53" (1/3) ... [2020-11-06 22:43:54,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522f3b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:54, skipping insertion in model container [2020-11-06 22:43:54,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:54" (2/3) ... [2020-11-06 22:43:54,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522f3b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:54, skipping insertion in model container [2020-11-06 22:43:54,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:54" (3/3) ... [2020-11-06 22:43:54,945 INFO L111 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-11-06 22:43:54,963 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:43:54,967 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:43:54,981 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:43:55,012 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:43:55,012 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:43:55,012 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:43:55,012 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:43:55,012 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:43:55,012 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:43:55,013 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:43:55,013 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:43:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-06 22:43:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:43:55,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:55,039 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] [2020-11-06 22:43:55,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:55,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:55,046 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-11-06 22:43:55,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:55,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494249601] [2020-11-06 22:43:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:55,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:55,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:43:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:55,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494249601] [2020-11-06 22:43:55,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:55,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:43:55,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073343503] [2020-11-06 22:43:55,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:43:55,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:55,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:43:55,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:43:55,387 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-11-06 22:43:55,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:55,507 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-11-06 22:43:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:43:55,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-06 22:43:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:55,518 INFO L225 Difference]: With dead ends: 61 [2020-11-06 22:43:55,519 INFO L226 Difference]: Without dead ends: 27 [2020-11-06 22:43:55,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:43:55,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-06 22:43:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-06 22:43:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-06 22:43:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-06 22:43:55,623 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-11-06 22:43:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:55,623 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-06 22:43:55,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:43:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-11-06 22:43:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:43:55,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:55,625 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] [2020-11-06 22:43:55,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:43:55,625 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:55,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:55,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-11-06 22:43:55,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:55,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521813119] [2020-11-06 22:43:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:55,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:43:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:55,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:55,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521813119] [2020-11-06 22:43:55,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:55,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:43:55,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566494211] [2020-11-06 22:43:55,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:43:55,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:55,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:43:55,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:43:55,899 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-11-06 22:43:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:56,057 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-11-06 22:43:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:43:56,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-06 22:43:56,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:56,059 INFO L225 Difference]: With dead ends: 47 [2020-11-06 22:43:56,059 INFO L226 Difference]: Without dead ends: 33 [2020-11-06 22:43:56,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:43:56,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-06 22:43:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-11-06 22:43:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-06 22:43:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-06 22:43:56,070 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2020-11-06 22:43:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:56,071 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-06 22:43:56,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:43:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-06 22:43:56,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-06 22:43:56,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:56,072 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] [2020-11-06 22:43:56,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:43:56,073 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:56,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-11-06 22:43:56,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:56,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705583025] [2020-11-06 22:43:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:56,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:43:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:43:56,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705583025] [2020-11-06 22:43:56,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:56,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:43:56,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506987620] [2020-11-06 22:43:56,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:43:56,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:56,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:43:56,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:43:56,328 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-11-06 22:43:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:56,605 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-11-06 22:43:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:43:56,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-11-06 22:43:56,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:56,607 INFO L225 Difference]: With dead ends: 41 [2020-11-06 22:43:56,608 INFO L226 Difference]: Without dead ends: 34 [2020-11-06 22:43:56,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-06 22:43:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-06 22:43:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-11-06 22:43:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-06 22:43:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-11-06 22:43:56,628 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2020-11-06 22:43:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:56,628 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-11-06 22:43:56,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:43:56,629 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-11-06 22:43:56,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 22:43:56,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:56,630 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-06 22:43:56,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:43:56,631 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:56,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:56,631 INFO L82 PathProgramCache]: Analyzing trace with hash 427046459, now seen corresponding path program 1 times [2020-11-06 22:43:56,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:56,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451731377] [2020-11-06 22:43:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:56,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:43:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:56,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451731377] [2020-11-06 22:43:56,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876584220] [2020-11-06 22:43:56,845 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 [2020-11-06 22:43:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:56,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:43:56,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:43:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:57,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:43:57,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-11-06 22:43:57,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850554498] [2020-11-06 22:43:57,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:43:57,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:57,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:43:57,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:43:57,057 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 11 states. [2020-11-06 22:43:57,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:57,316 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-11-06 22:43:57,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 22:43:57,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-11-06 22:43:57,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:57,318 INFO L225 Difference]: With dead ends: 57 [2020-11-06 22:43:57,318 INFO L226 Difference]: Without dead ends: 40 [2020-11-06 22:43:57,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:43:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-06 22:43:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-11-06 22:43:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-06 22:43:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-06 22:43:57,327 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 31 [2020-11-06 22:43:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:57,327 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-06 22:43:57,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:43:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-06 22:43:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-06 22:43:57,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:57,329 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-06 22:43:57,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:43:57,544 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:57,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1229914284, now seen corresponding path program 1 times [2020-11-06 22:43:57,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:57,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260823849] [2020-11-06 22:43:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:58,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:43:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:58,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260823849] [2020-11-06 22:43:58,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937376295] [2020-11-06 22:43:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:43:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:58,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-06 22:43:58,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:43:58,437 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-06 22:43:58,437 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:43:58,451 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:43:58,452 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:43:58,452 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-11-06 22:43:58,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:43:58,539 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-11-06 22:43:58,540 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:43:58,552 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:43:58,553 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:43:58,553 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-11-06 22:43:58,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:43:58,681 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2020-11-06 22:43:58,682 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:43:58,693 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:43:58,697 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-06 22:43:58,698 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:48, output treesize:35 [2020-11-06 22:43:58,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:43:58,791 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2020-11-06 22:43:58,792 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:43:58,800 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:43:58,801 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:43:58,802 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:7 [2020-11-06 22:43:58,837 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:43:58,843 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:43:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:58,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:43:58,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 27 [2020-11-06 22:43:58,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938216881] [2020-11-06 22:43:58,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-06 22:43:58,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-06 22:43:58,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2020-11-06 22:43:58,954 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 27 states. [2020-11-06 22:43:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:59,964 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-11-06 22:43:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-06 22:43:59,969 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 34 [2020-11-06 22:43:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:59,971 INFO L225 Difference]: With dead ends: 66 [2020-11-06 22:43:59,971 INFO L226 Difference]: Without dead ends: 41 [2020-11-06 22:43:59,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2020-11-06 22:43:59,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-06 22:43:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-06 22:43:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-06 22:43:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-11-06 22:43:59,990 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2020-11-06 22:43:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:59,990 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-11-06 22:43:59,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-06 22:43:59,991 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-06 22:43:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-06 22:43:59,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:59,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-11-06 22:44:00,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:00,213 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:00,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:00,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1090575102, now seen corresponding path program 2 times [2020-11-06 22:44:00,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:00,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546349563] [2020-11-06 22:44:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:00,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:00,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546349563] [2020-11-06 22:44:00,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567887996] [2020-11-06 22:44:00,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:00,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:44:00,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:44:00,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-06 22:44:00,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:00,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:44:00,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2020-11-06 22:44:00,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559793422] [2020-11-06 22:44:00,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 22:44:00,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:00,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 22:44:00,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:44:00,555 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2020-11-06 22:44:00,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:00,901 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-11-06 22:44:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 22:44:00,901 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-11-06 22:44:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:00,902 INFO L225 Difference]: With dead ends: 63 [2020-11-06 22:44:00,902 INFO L226 Difference]: Without dead ends: 45 [2020-11-06 22:44:00,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-11-06 22:44:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-06 22:44:00,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-11-06 22:44:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-06 22:44:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-11-06 22:44:00,913 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 37 [2020-11-06 22:44:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:00,914 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-11-06 22:44:00,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 22:44:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-11-06 22:44:00,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-06 22:44:00,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:00,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-11-06 22:44:01,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:01,129 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:01,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:01,130 INFO L82 PathProgramCache]: Analyzing trace with hash 553320601, now seen corresponding path program 3 times [2020-11-06 22:44:01,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:01,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197011719] [2020-11-06 22:44:01,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:01,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:01,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:01,304 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:01,305 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:01,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 22:44:01,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:01 BoogieIcfgContainer [2020-11-06 22:44:01,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:01,407 INFO L168 Benchmark]: Toolchain (without parser) took 7461.66 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 126.6 MB in the beginning and 77.1 MB in the end (delta: 49.5 MB). Peak memory consumption was 86.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:01,408 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:01,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.88 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:01,410 INFO L168 Benchmark]: Boogie Preprocessor took 78.18 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:01,411 INFO L168 Benchmark]: RCFGBuilder took 503.18 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 98.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:01,415 INFO L168 Benchmark]: TraceAbstraction took 6468.68 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 98.0 MB in the beginning and 77.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:01,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 399.88 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.18 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 503.18 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 98.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6468.68 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 98.0 MB in the beginning and 77.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=3] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=3] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=3] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=3] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=3, sum={3:0}] [L31] COND TRUE i