/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-28 06:29:00,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 06:29:00,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 06:29:00,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 06:29:00,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 06:29:00,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 06:29:00,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 06:29:00,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 06:29:00,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 06:29:00,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 06:29:00,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 06:29:00,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 06:29:00,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 06:29:00,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 06:29:00,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 06:29:00,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 06:29:00,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 06:29:00,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 06:29:00,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 06:29:00,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 06:29:00,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 06:29:00,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 06:29:00,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 06:29:00,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 06:29:00,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 06:29:00,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 06:29:00,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 06:29:01,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 06:29:01,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 06:29:01,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 06:29:01,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 06:29:01,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 06:29:01,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 06:29:01,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 06:29:01,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 06:29:01,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 06:29:01,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 06:29:01,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 06:29:01,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 06:29:01,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 06:29:01,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 06:29:01,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-28 06:29:01,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 06:29:01,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 06:29:01,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 06:29:01,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 06:29:01,077 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 06:29:01,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 06:29:01,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 06:29:01,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 06:29:01,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 06:29:01,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 06:29:01,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 06:29:01,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 06:29:01,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 06:29:01,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 06:29:01,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 06:29:01,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 06:29:01,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 06:29:01,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 06:29:01,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 06:29:01,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 06:29:01,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 06:29:01,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 06:29:01,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 06:29:01,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 06:29:01,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 06:29:01,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 06:29:01,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 06:29:01,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 06:29:01,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 06:29:01,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-28 06:29:01,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 06:29:01,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 06:29:01,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 06:29:01,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 06:29:01,610 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 06:29:01,611 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test08.c [2020-08-28 06:29:01,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/247a971ab/957eada9b3b8441cb7b8698964d303f0/FLAGde1755f67 [2020-08-28 06:29:02,211 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 06:29:02,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test08.c [2020-08-28 06:29:02,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/247a971ab/957eada9b3b8441cb7b8698964d303f0/FLAGde1755f67 [2020-08-28 06:29:02,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/247a971ab/957eada9b3b8441cb7b8698964d303f0 [2020-08-28 06:29:02,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 06:29:02,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 06:29:02,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 06:29:02,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 06:29:02,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 06:29:02,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:29:02" (1/1) ... [2020-08-28 06:29:02,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31051650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02, skipping insertion in model container [2020-08-28 06:29:02,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:29:02" (1/1) ... [2020-08-28 06:29:02,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 06:29:02,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 06:29:02,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 06:29:02,822 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 06:29:02,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 06:29:02,864 INFO L208 MainTranslator]: Completed translation [2020-08-28 06:29:02,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02 WrapperNode [2020-08-28 06:29:02,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 06:29:02,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 06:29:02,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 06:29:02,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 06:29:02,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02" (1/1) ... [2020-08-28 06:29:02,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02" (1/1) ... [2020-08-28 06:29:02,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02" (1/1) ... [2020-08-28 06:29:02,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02" (1/1) ... [2020-08-28 06:29:02,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02" (1/1) ... [2020-08-28 06:29:02,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02" (1/1) ... [2020-08-28 06:29:03,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02" (1/1) ... [2020-08-28 06:29:03,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 06:29:03,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 06:29:03,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 06:29:03,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 06:29:03,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-28 06:29:03,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 06:29:03,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 06:29:03,079 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-08-28 06:29:03,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 06:29:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 06:29:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-08-28 06:29:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-28 06:29:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 06:29:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-28 06:29:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 06:29:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-28 06:29:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-28 06:29:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 06:29:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-28 06:29:03,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 06:29:03,364 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-28 06:29:03,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:29:03 BoogieIcfgContainer [2020-08-28 06:29:03,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 06:29:03,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 06:29:03,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 06:29:03,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 06:29:03,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 06:29:02" (1/3) ... [2020-08-28 06:29:03,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521938c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:29:03, skipping insertion in model container [2020-08-28 06:29:03,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:29:02" (2/3) ... [2020-08-28 06:29:03,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521938c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:29:03, skipping insertion in model container [2020-08-28 06:29:03,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:29:03" (3/3) ... [2020-08-28 06:29:03,380 INFO L109 eAbstractionObserver]: Analyzing ICFG test08.c [2020-08-28 06:29:03,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 06:29:03,409 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 06:29:03,435 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 06:29:03,484 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 06:29:03,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 06:29:03,485 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 06:29:03,485 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 06:29:03,485 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 06:29:03,485 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 06:29:03,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 06:29:03,486 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 06:29:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-28 06:29:03,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-28 06:29:03,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 06:29:03,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-28 06:29:03,521 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 06:29:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 06:29:03,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1889415219, now seen corresponding path program 1 times [2020-08-28 06:29:03,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 06:29:03,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143688077] [2020-08-28 06:29:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 06:29:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-28 06:29:03,713 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-28 06:29:03,714 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-28 06:29:03,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 06:29:03,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 06:29:03 BoogieIcfgContainer [2020-08-28 06:29:03,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-28 06:29:03,746 INFO L168 Benchmark]: Toolchain (without parser) took 1191.73 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 154.9 MB in the end (delta: -52.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2020-08-28 06:29:03,747 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 146.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-28 06:29:03,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.97 ms. Allocated memory is still 146.8 MB. Free memory was 102.3 MB in the beginning and 92.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-28 06:29:03,750 INFO L168 Benchmark]: Boogie Preprocessor took 137.21 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 92.5 MB in the beginning and 182.6 MB in the end (delta: -90.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-28 06:29:03,751 INFO L168 Benchmark]: RCFGBuilder took 367.01 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 167.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-08-28 06:29:03,751 INFO L168 Benchmark]: TraceAbstraction took 369.89 ms. Allocated memory is still 204.5 MB. Free memory was 167.7 MB in the beginning and 154.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-28 06:29:03,756 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 146.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.97 ms. Allocated memory is still 146.8 MB. Free memory was 102.3 MB in the beginning and 92.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.21 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 92.5 MB in the beginning and 182.6 MB in the end (delta: -90.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 367.01 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 167.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 369.89 ms. Allocated memory is still 204.5 MB. Free memory was 167.7 MB in the beginning and 154.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 36]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L4] int a, b; [L5] int *p1, *p2; [L19] p1 = &a [L20] p2 = &b [L22] b = 1 [L23] a = 5 [L25] EXPR \read(a) [L25] a-- [L27] CALL, EXPR f() [L8] EXPR \read(*p1) [L8] EXPR \read(*p2) [L8] EXPR \read(a) [L8] int v = *p1 + *p2 - a; [L9] COND TRUE v == 1 [L10] p1 = p2 [L11] return v; [L27] RET, EXPR f() [L27] a = f() [L29] EXPR \read(a) [L29] COND TRUE a && p1 == p2 [L36] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...