/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/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:25:15,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:25:15,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:25:15,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:25:15,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:25:15,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:25:15,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:25:15,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:25:15,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:25:15,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:25:15,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:25:15,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:25:15,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:25:15,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:25:15,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:25:15,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:25:15,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:25:15,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:25:15,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:25:15,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:25:15,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:25:15,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:25:15,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:25:15,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:25:15,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 18:25:15,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 18:25:15,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 18:25:15,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 18:25:15,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 18:25:15,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 18:25:15,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 18:25:15,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 18:25:15,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 18:25:15,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 18:25:15,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 18:25:15,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 18:25:15,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 18:25:15,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 18:25:15,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:25:15,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:25:15,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:25:15,330 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 [2020-10-23 18:25:15,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:25:15,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:25:15,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:25:15,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:25:15,389 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:25:15,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:25:15,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:25:15,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:25:15,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:25:15,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:25:15,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:25:15,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:25:15,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:25:15,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:25:15,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:25:15,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:25:15,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:25:15,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:25:15,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:25:15,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:25:15,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:25:15,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:25:15,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:25:15,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:25:15,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:25:15,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:25:15,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:25:15,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:25:15,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:25:15,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:25:15,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:25:15,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:25:15,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:25:15,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:25:15,853 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:25:15,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-10-23 18:25:15,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99adb6e3a/bf273c3577384410b7fa3ae386bb2e95/FLAG4f0ff7099 [2020-10-23 18:25:16,650 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:25:16,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i [2020-10-23 18:25:16,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99adb6e3a/bf273c3577384410b7fa3ae386bb2e95/FLAG4f0ff7099 [2020-10-23 18:25:16,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99adb6e3a/bf273c3577384410b7fa3ae386bb2e95 [2020-10-23 18:25:17,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:25:17,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:25:17,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:25:17,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:25:17,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:25:17,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:25:16" (1/1) ... [2020-10-23 18:25:17,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29817714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17, skipping insertion in model container [2020-10-23 18:25:17,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:25:16" (1/1) ... [2020-10-23 18:25:17,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:25:17,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:25:17,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:25:17,222 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:25:17,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:25:17,258 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:25:17,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17 WrapperNode [2020-10-23 18:25:17,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:25:17,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:25:17,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:25:17,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:25:17,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17" (1/1) ... [2020-10-23 18:25:17,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17" (1/1) ... [2020-10-23 18:25:17,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17" (1/1) ... [2020-10-23 18:25:17,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17" (1/1) ... [2020-10-23 18:25:17,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17" (1/1) ... [2020-10-23 18:25:17,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17" (1/1) ... [2020-10-23 18:25:17,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17" (1/1) ... [2020-10-23 18:25:17,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:25:17,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:25:17,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:25:17,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:25:17,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17" (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 [2020-10-23 18:25:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:25:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:25:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:25:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-23 18:25:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-10-23 18:25:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-10-23 18:25:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-10-23 18:25:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:25:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:25:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:25:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:25:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:25:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-23 18:25:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:25:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:25:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-10-23 18:25:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:25:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:25:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-10-23 18:25:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-10-23 18:25:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:25:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:25:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:25:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:25:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:25:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:25:17,749 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:25:17,750 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 18:25:17,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:25:17 BoogieIcfgContainer [2020-10-23 18:25:17,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:25:17,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:25:17,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:25:17,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:25:17,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:25:16" (1/3) ... [2020-10-23 18:25:17,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47965337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:25:17, skipping insertion in model container [2020-10-23 18:25:17,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:17" (2/3) ... [2020-10-23 18:25:17,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47965337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:25:17, skipping insertion in model container [2020-10-23 18:25:17,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:25:17" (3/3) ... [2020-10-23 18:25:17,775 INFO L111 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-10-23 18:25:17,807 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:25:17,813 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:25:17,827 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:25:17,877 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:25:17,877 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:25:17,877 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:25:17,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:25:17,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:25:17,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:25:17,878 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:25:17,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:25:17,905 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-23 18:25:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 18:25:17,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:25:17,915 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] [2020-10-23 18:25:17,915 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:25:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:25:17,925 INFO L82 PathProgramCache]: Analyzing trace with hash 497426882, now seen corresponding path program 1 times [2020-10-23 18:25:17,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:25:17,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111036682] [2020-10-23 18:25:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:25:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:18,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:25:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:18,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:25:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:25:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:25:18,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111036682] [2020-10-23 18:25:18,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:25:18,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 18:25:18,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904690649] [2020-10-23 18:25:18,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 18:25:18,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:25:18,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 18:25:18,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:25:18,642 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 9 states. [2020-10-23 18:25:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:25:19,098 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-23 18:25:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:25:19,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-23 18:25:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:25:19,108 INFO L225 Difference]: With dead ends: 54 [2020-10-23 18:25:19,109 INFO L226 Difference]: Without dead ends: 28 [2020-10-23 18:25:19,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:25:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-23 18:25:19,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-23 18:25:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-23 18:25:19,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-10-23 18:25:19,162 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 21 [2020-10-23 18:25:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:25:19,162 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-10-23 18:25:19,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 18:25:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-10-23 18:25:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 18:25:19,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:25:19,164 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:25:19,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:25:19,165 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:25:19,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:25:19,166 INFO L82 PathProgramCache]: Analyzing trace with hash 464597277, now seen corresponding path program 1 times [2020-10-23 18:25:19,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:25:19,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492154212] [2020-10-23 18:25:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:25:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:25:19,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:25:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:25:19,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:25:19,308 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:25:19,309 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:25:19,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:25:19,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:25:19 BoogieIcfgContainer [2020-10-23 18:25:19,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:25:19,354 INFO L168 Benchmark]: Toolchain (without parser) took 2348.74 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 51.9 MB in the end (delta: 74.3 MB). Peak memory consumption was 75.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:19,355 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:25:19,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:19,358 INFO L168 Benchmark]: Boogie Preprocessor took 38.64 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 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. [2020-10-23 18:25:19,359 INFO L168 Benchmark]: RCFGBuilder took 455.03 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 133.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:19,360 INFO L168 Benchmark]: TraceAbstraction took 1591.14 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 51.9 MB in the end (delta: 80.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:19,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 243.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.64 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 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 455.03 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 133.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1591.14 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 51.9 MB in the end (delta: 80.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L52] rr * ptr1 = 0; VAL [ptr1={0:0}] [L53] CALL, EXPR getPtr() [L39] CALL, EXPR getrr() [L32] rr * r = (rr *)malloc(sizeof *r); [L33] r -> state = 0 [L34] return r; VAL [\result={-1:0}, malloc(sizeof *r)={-1:0}, r={-1:0}] [L39] RET, EXPR getrr() VAL [getrr()={-1:0}] [L39] rr * r = getrr(); [L40] r -> state = 1 [L41] return r; VAL [\result={-1:0}, r={-1:0}] [L53] RET, EXPR getPtr() VAL [getPtr()={-1:0}, ptr1={0:0}] [L53] ptr1 = getPtr() [L54] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L46] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L46] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L47] ptr -> state = 2 VAL [ptr={-1:0}, ptr={-1:0}] [L54] RET freePtr(ptr1) VAL [ptr1={-1:0}] [L56] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L46] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L46] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L46] CALL __blast_assert () [L8] CALL reach_error() [L3] __assert_fail("0", "1_3.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 18 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 2000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...