/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/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:01,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:01,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:01,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:01,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:01,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:01,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:01,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:01,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:01,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:01,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:01,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:01,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:01,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:01,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:01,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:01,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:01,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:01,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:01,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:01,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:01,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:01,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:01,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:01,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:44:01,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:44:01,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:44:01,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:44:01,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:44:01,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:44:01,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:44:01,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:44:01,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:44:01,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:44:01,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:44:01,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:44:01,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:44:01,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:44:01,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:01,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:01,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:01,252 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 22:44:01,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:01,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:01,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:01,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:01,319 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:01,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:01,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:01,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:01,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:01,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:01,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:01,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:01,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:01,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:01,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:01,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:01,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:01,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:01,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:01,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:01,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:01,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:01,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:01,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:01,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:01,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:01,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:01,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:01,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:01,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:01,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:01,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:01,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:01,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:01,892 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:01,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2020-11-06 22:44:01,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adf12711d/4001ee4fee6940d18060dda5fb5af321/FLAG7dc41e83e [2020-11-06 22:44:02,588 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:02,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c [2020-11-06 22:44:02,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adf12711d/4001ee4fee6940d18060dda5fb5af321/FLAG7dc41e83e [2020-11-06 22:44:02,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adf12711d/4001ee4fee6940d18060dda5fb5af321 [2020-11-06 22:44:02,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:02,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:02,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:02,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:02,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:02,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:02" (1/1) ... [2020-11-06 22:44:02,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424011f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:02, skipping insertion in model container [2020-11-06 22:44:02,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:02" (1/1) ... [2020-11-06 22:44:02,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:03,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:03,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:03,241 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:03,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:03,310 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:03,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03 WrapperNode [2020-11-06 22:44:03,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:03,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:03,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:03,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:03,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2020-11-06 22:44:03,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2020-11-06 22:44:03,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2020-11-06 22:44:03,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2020-11-06 22:44:03,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2020-11-06 22:44:03,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2020-11-06 22:44:03,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2020-11-06 22:44:03,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:03,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:03,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:03,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:03,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (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 22:44:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:03,897 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:03,898 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-06 22:44:03,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:03 BoogieIcfgContainer [2020-11-06 22:44:03,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:03,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:03,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:03,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:03,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:02" (1/3) ... [2020-11-06 22:44:03,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0c4300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:03, skipping insertion in model container [2020-11-06 22:44:03,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (2/3) ... [2020-11-06 22:44:03,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0c4300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:03, skipping insertion in model container [2020-11-06 22:44:03,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:03" (3/3) ... [2020-11-06 22:44:03,951 INFO L111 eAbstractionObserver]: Analyzing ICFG condnf.c [2020-11-06 22:44:03,997 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:04,001 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:04,019 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:04,064 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:04,064 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:04,065 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:04,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:04,065 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:04,065 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:04,065 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:04,065 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-06 22:44:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:44:04,104 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:04,105 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] [2020-11-06 22:44:04,106 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:04,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:04,119 INFO L82 PathProgramCache]: Analyzing trace with hash -603566119, now seen corresponding path program 1 times [2020-11-06 22:44:04,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:04,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313842128] [2020-11-06 22:44:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:04,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:04,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:04,597 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 22:44:04,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313842128] [2020-11-06 22:44:04,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:04,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:04,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381780025] [2020-11-06 22:44:04,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:04,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:04,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:04,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:04,628 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-11-06 22:44:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:04,795 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2020-11-06 22:44:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:04,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-06 22:44:04,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:04,806 INFO L225 Difference]: With dead ends: 65 [2020-11-06 22:44:04,806 INFO L226 Difference]: Without dead ends: 31 [2020-11-06 22:44:04,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-06 22:44:04,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-06 22:44:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-06 22:44:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-06 22:44:04,858 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-11-06 22:44:04,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:04,858 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-06 22:44:04,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:04,859 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-06 22:44:04,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:44:04,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:04,860 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] [2020-11-06 22:44:04,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:04,861 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:04,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:04,862 INFO L82 PathProgramCache]: Analyzing trace with hash 689239426, now seen corresponding path program 1 times [2020-11-06 22:44:04,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:04,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576449414] [2020-11-06 22:44:04,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:04,994 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 22:44:04,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576449414] [2020-11-06 22:44:04,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:04,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:04,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156105039] [2020-11-06 22:44:04,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:04,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:04,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:04,999 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-11-06 22:44:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:05,194 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-11-06 22:44:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:05,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-11-06 22:44:05,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:05,198 INFO L225 Difference]: With dead ends: 56 [2020-11-06 22:44:05,198 INFO L226 Difference]: Without dead ends: 40 [2020-11-06 22:44:05,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:44:05,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-06 22:44:05,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-11-06 22:44:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-06 22:44:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-11-06 22:44:05,215 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-11-06 22:44:05,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:05,215 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-11-06 22:44:05,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:05,216 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-11-06 22:44:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-06 22:44:05,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:05,217 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 22:44:05,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:05,218 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:05,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:05,218 INFO L82 PathProgramCache]: Analyzing trace with hash 493588519, now seen corresponding path program 1 times [2020-11-06 22:44:05,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:05,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551794951] [2020-11-06 22:44:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:05,301 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:05,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:05,378 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:05,378 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:05,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:44:05,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:05 BoogieIcfgContainer [2020-11-06 22:44:05,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:05,429 INFO L168 Benchmark]: Toolchain (without parser) took 2469.66 ms. Allocated memory is still 163.6 MB. Free memory was 139.6 MB in the beginning and 73.9 MB in the end (delta: 65.7 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:05,430 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:05,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.00 ms. Allocated memory is still 163.6 MB. Free memory was 138.9 MB in the beginning and 129.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:05,432 INFO L168 Benchmark]: Boogie Preprocessor took 86.88 ms. Allocated memory is still 163.6 MB. Free memory was 129.1 MB in the beginning and 127.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:05,433 INFO L168 Benchmark]: RCFGBuilder took 498.12 ms. Allocated memory is still 163.6 MB. Free memory was 127.6 MB in the beginning and 111.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:05,434 INFO L168 Benchmark]: TraceAbstraction took 1488.24 ms. Allocated memory is still 163.6 MB. Free memory was 146.8 MB in the beginning and 73.9 MB in the end (delta: 72.9 MB). Peak memory consumption was 72.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:05,438 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 163.6 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 344.00 ms. Allocated memory is still 163.6 MB. Free memory was 138.9 MB in the beginning and 129.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.88 ms. Allocated memory is still 163.6 MB. Free memory was 129.1 MB in the beginning and 127.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 498.12 ms. Allocated memory is still 163.6 MB. Free memory was 127.6 MB in the beginning and 111.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1488.24 ms. Allocated memory is still 163.6 MB. Free memory was 146.8 MB in the beginning and 73.9 MB in the end (delta: 72.9 MB). Peak memory consumption was 72.4 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=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] int *a = malloc(sizeof(int)*N); [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] COND TRUE i N [L38] EXPR a[i] [L38] a[i] = a[i] [L35] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] COND FALSE !(i