/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure_noptr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:20:23,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:20:23,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:20:23,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:20:23,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:20:23,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:20:23,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:20:23,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:20:23,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:20:23,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:20:23,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:20:23,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:20:23,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:20:23,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:20:23,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:20:23,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:20:23,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:20:23,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:20:23,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:20:23,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:20:23,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:20:23,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:20:23,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:20:23,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:20:23,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:20:23,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:20:23,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:20:23,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:20:23,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:20:23,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:20:23,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:20:23,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:20:23,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:20:23,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:20:23,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:20:23,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:20:23,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:20:23,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:20:23,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:20:23,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:20:23,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:20:23,670 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 [2020-07-21 11:20:23,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:20:23,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:20:23,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:20:23,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:20:23,703 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:20:23,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:20:23,703 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:20:23,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:20:23,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:20:23,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:20:23,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:20:23,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:20:23,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:20:23,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:20:23,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:20:23,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:20:23,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:20:23,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:20:23,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:20:23,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:20:23,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:20:23,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:20:23,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:20:23,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:20:23,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:20:23,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:20:23,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:20:23,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:20:23,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:20:23,710 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:20:24,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:20:24,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:20:24,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:20:24,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:20:24,144 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:20:24,145 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_noptr-1.i [2020-07-21 11:20:24,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48809a5cc/5898bec5de324e0abf8ae285d521fefb/FLAG77deae1d2 [2020-07-21 11:20:24,738 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:20:24,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure_noptr-1.i [2020-07-21 11:20:24,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48809a5cc/5898bec5de324e0abf8ae285d521fefb/FLAG77deae1d2 [2020-07-21 11:20:25,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48809a5cc/5898bec5de324e0abf8ae285d521fefb [2020-07-21 11:20:25,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:20:25,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:20:25,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:20:25,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:20:25,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:20:25,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:20:25" (1/1) ... [2020-07-21 11:20:25,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607c40e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25, skipping insertion in model container [2020-07-21 11:20:25,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:20:25" (1/1) ... [2020-07-21 11:20:25,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:20:25,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:20:25,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:20:25,435 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:20:25,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:20:25,482 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:20:25,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25 WrapperNode [2020-07-21 11:20:25,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:20:25,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:20:25,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:20:25,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:20:25,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25" (1/1) ... [2020-07-21 11:20:25,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25" (1/1) ... [2020-07-21 11:20:25,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25" (1/1) ... [2020-07-21 11:20:25,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25" (1/1) ... [2020-07-21 11:20:25,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25" (1/1) ... [2020-07-21 11:20:25,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25" (1/1) ... [2020-07-21 11:20:25,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25" (1/1) ... [2020-07-21 11:20:25,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:20:25,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:20:25,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:20:25,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:20:25,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25" (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 [2020-07-21 11:20:25,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:20:25,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:20:25,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 11:20:25,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:20:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:20:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:20:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 11:20:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-07-21 11:20:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-07-21 11:20:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:20:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 11:20:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 11:20:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 11:20:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 11:20:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:20:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:20:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:20:25,901 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:20:25,901 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:20:25,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:20:25 BoogieIcfgContainer [2020-07-21 11:20:25,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:20:25,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:20:25,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:20:25,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:20:25,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:20:25" (1/3) ... [2020-07-21 11:20:25,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0edbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:20:25, skipping insertion in model container [2020-07-21 11:20:25,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:25" (2/3) ... [2020-07-21 11:20:25,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0edbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:20:25, skipping insertion in model container [2020-07-21 11:20:25,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:20:25" (3/3) ... [2020-07-21 11:20:25,916 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-1.i [2020-07-21 11:20:25,930 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:20:25,940 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:20:25,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:20:25,991 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:20:25,991 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:20:25,991 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:20:25,992 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:20:25,992 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:20:25,992 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:20:25,993 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:20:25,994 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:20:26,031 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-21 11:20:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 11:20:26,040 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:20:26,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:20:26,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:20:26,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:20:26,052 INFO L82 PathProgramCache]: Analyzing trace with hash -715594688, now seen corresponding path program 1 times [2020-07-21 11:20:26,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:20:26,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389571655] [2020-07-21 11:20:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:20:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:20:26,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:20:26,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:20:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:20:26,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:20:26,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389571655] [2020-07-21 11:20:26,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:20:26,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:20:26,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454319548] [2020-07-21 11:20:26,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:20:26,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:20:26,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:20:26,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:20:26,320 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-07-21 11:20:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:20:26,390 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-21 11:20:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:20:26,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-21 11:20:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:20:26,400 INFO L225 Difference]: With dead ends: 25 [2020-07-21 11:20:26,400 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:20:26,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:20:26,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:20:26,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:20:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:20:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:20:26,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-21 11:20:26,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:20:26,438 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:20:26,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:20:26,438 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:20:26,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:20:26,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:20:26,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:20:26,709 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:20:26,709 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:20:26,710 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:20:26,710 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:20:26,710 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:20:26,710 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:20:26,711 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:20:26,711 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (= 4 |main_#t~mem0|) [2020-07-21 11:20:26,711 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-07-21 11:20:26,711 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 27 33) the Hoare annotation is: true [2020-07-21 11:20:26,712 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 33) no Hoare annotation was computed. [2020-07-21 11:20:26,712 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 33) no Hoare annotation was computed. [2020-07-21 11:20:26,712 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-07-21 11:20:26,712 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-07-21 11:20:26,712 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-07-21 11:20:26,713 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 11:20:26,713 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-07-21 11:20:26,713 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-07-21 11:20:26,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:20:26 BoogieIcfgContainer [2020-07-21 11:20:26,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:20:26,725 INFO L168 Benchmark]: Toolchain (without parser) took 1607.77 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 104.4 MB in the beginning and 134.7 MB in the end (delta: -30.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:20:26,726 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 11:20:26,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.84 ms. Allocated memory is still 140.0 MB. Free memory was 104.0 MB in the beginning and 94.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:20:26,729 INFO L168 Benchmark]: Boogie Preprocessor took 133.52 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 94.1 MB in the beginning and 180.1 MB in the end (delta: -86.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-21 11:20:26,730 INFO L168 Benchmark]: RCFGBuilder took 288.35 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 166.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-07-21 11:20:26,731 INFO L168 Benchmark]: TraceAbstraction took 813.38 ms. Allocated memory is still 201.9 MB. Free memory was 166.0 MB in the beginning and 134.7 MB in the end (delta: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2020-07-21 11:20:26,735 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.84 ms. Allocated memory is still 140.0 MB. Free memory was 104.0 MB in the beginning and 94.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.52 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 94.1 MB in the beginning and 180.1 MB in the end (delta: -86.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.35 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 166.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 813.38 ms. Allocated memory is still 201.9 MB. Free memory was 166.0 MB in the beginning and 134.7 MB in the end (delta: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 31 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 5 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 6 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 correct! Received shutdown request...