/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.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:46:49,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:46:49,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:46:49,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:46:49,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:46:49,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:46:49,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:46:49,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:46:49,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:46:49,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:46:49,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:46:49,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:46:49,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:46:49,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:46:49,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:46:49,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:46:49,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:46:49,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:46:49,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:46:49,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:46:49,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:46:49,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:46:49,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:46:49,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:46:49,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:46:49,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:46:49,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:46:49,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:46:49,587 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 [2020-07-20 05:46:49,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:46:49,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:46:49,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:46:49,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:46:49,603 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:46:49,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:46:49,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:46:49,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:46:49,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:46:49,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:46:49,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:46:49,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:46:49,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:46:49,604 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:46:49,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:46:49,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:46:49,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:46:49,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:46:49,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:46:49,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:46:49,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:46:49,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:46:49,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:46:49,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:46:49,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:46:49,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:46:49,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:46:49,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:46:49,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:46:49,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 05:46:49,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:46:49,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:46:49,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:46:49,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:46:49,892 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:46:49,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test14.c [2020-07-20 05:46:49,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d53c8bdd8/f3b03eb9f3e34c2f957615a9419035b1/FLAGe69539d45 [2020-07-20 05:46:50,375 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:46:50,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test14.c [2020-07-20 05:46:50,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d53c8bdd8/f3b03eb9f3e34c2f957615a9419035b1/FLAGe69539d45 [2020-07-20 05:46:50,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d53c8bdd8/f3b03eb9f3e34c2f957615a9419035b1 [2020-07-20 05:46:50,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:46:50,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:46:50,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:46:50,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:46:50,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:46:50,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:46:50" (1/1) ... [2020-07-20 05:46:50,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f086bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:50, skipping insertion in model container [2020-07-20 05:46:50,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:46:50" (1/1) ... [2020-07-20 05:46:50,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:46:50,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:46:51,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:46:51,014 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:46:51,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:46:51,048 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:46:51,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:51 WrapperNode [2020-07-20 05:46:51,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:46:51,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:46:51,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:46:51,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:46:51,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:51" (1/1) ... [2020-07-20 05:46:51,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:51" (1/1) ... [2020-07-20 05:46:51,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:51" (1/1) ... [2020-07-20 05:46:51,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:51" (1/1) ... [2020-07-20 05:46:51,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:51" (1/1) ... [2020-07-20 05:46:51,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:51" (1/1) ... [2020-07-20 05:46:51,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:51" (1/1) ... [2020-07-20 05:46:51,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:46:51,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:46:51,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:46:51,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:46:51,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:51" (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 [2020-07-20 05:46:51,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:46:51,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:46:51,232 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-20 05:46:51,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:46:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:46:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 05:46:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 05:46:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-20 05:46:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:46:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 05:46:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 05:46:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 05:46:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 05:46:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:46:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:46:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 05:46:51,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:46:51,449 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 05:46:51,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:46:51 BoogieIcfgContainer [2020-07-20 05:46:51,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:46:51,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:46:51,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:46:51,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:46:51,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:46:50" (1/3) ... [2020-07-20 05:46:51,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b07df4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:46:51, skipping insertion in model container [2020-07-20 05:46:51,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:51" (2/3) ... [2020-07-20 05:46:51,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b07df4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:46:51, skipping insertion in model container [2020-07-20 05:46:51,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:46:51" (3/3) ... [2020-07-20 05:46:51,469 INFO L109 eAbstractionObserver]: Analyzing ICFG test14.c [2020-07-20 05:46:51,485 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:46:51,495 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:46:51,513 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:46:51,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:46:51,541 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:46:51,541 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:46:51,541 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:46:51,541 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:46:51,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:46:51,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:46:51,542 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:46:51,563 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 05:46:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 05:46:51,569 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:51,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:51,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:51,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:51,577 INFO L82 PathProgramCache]: Analyzing trace with hash 521841741, now seen corresponding path program 1 times [2020-07-20 05:46:51,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:51,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977365692] [2020-07-20 05:46:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@34e86cd5 [2020-07-20 05:46:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:51,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977365692] [2020-07-20 05:46:51,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:51,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 05:46:51,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104134510] [2020-07-20 05:46:51,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 05:46:51,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:51,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 05:46:51,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:46:51,926 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-07-20 05:46:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:52,035 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-07-20 05:46:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 05:46:52,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-20 05:46:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:52,048 INFO L225 Difference]: With dead ends: 29 [2020-07-20 05:46:52,048 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 05:46:52,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:46:52,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 05:46:52,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-20 05:46:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-20 05:46:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-20 05:46:52,091 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2020-07-20 05:46:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:52,092 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-20 05:46:52,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 05:46:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-20 05:46:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 05:46:52,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:52,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:52,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:46:52,094 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:52,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:52,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1019657549, now seen corresponding path program 1 times [2020-07-20 05:46:52,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:52,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507375860] [2020-07-20 05:46:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@34e86cd5 [2020-07-20 05:46:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:52,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507375860] [2020-07-20 05:46:52,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:52,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 05:46:52,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60037909] [2020-07-20 05:46:52,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 05:46:52,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:52,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 05:46:52,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:46:52,243 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-07-20 05:46:52,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:52,321 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-20 05:46:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 05:46:52,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 05:46:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:52,323 INFO L225 Difference]: With dead ends: 18 [2020-07-20 05:46:52,323 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 05:46:52,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 05:46:52,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 05:46:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 05:46:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 05:46:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 05:46:52,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-07-20 05:46:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:52,326 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 05:46:52,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 05:46:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 05:46:52,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 05:46:52,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:46:52,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 05:46:52,415 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 05:46:52,416 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|)) [2020-07-20 05:46:52,416 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:46:52,416 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 7 10) no Hoare annotation was computed. [2020-07-20 05:46:52,417 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-07-20 05:46:52,417 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2020-07-20 05:46:52,417 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2020-07-20 05:46:52,417 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:46:52,417 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 05:46:52,418 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 05:46:52,418 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 05:46:52,418 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-07-20 05:46:52,419 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 27) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)) [2020-07-20 05:46:52,419 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2020-07-20 05:46:52,420 INFO L264 CegarLoopResult]: At program point L20(lines 12 27) the Hoare annotation is: false [2020-07-20 05:46:52,420 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-07-20 05:46:52,420 INFO L268 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-07-20 05:46:52,420 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (not (= 0 main_~pc~0.base)) [2020-07-20 05:46:52,420 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-07-20 05:46:52,421 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-07-20 05:46:52,421 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2020-07-20 05:46:52,421 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2020-07-20 05:46:52,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:46:52 BoogieIcfgContainer [2020-07-20 05:46:52,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:46:52,441 INFO L168 Benchmark]: Toolchain (without parser) took 1637.21 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 99.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:52,443 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 05:46:52,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.54 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 93.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:52,447 INFO L168 Benchmark]: Boogie Preprocessor took 127.38 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 179.3 MB in the end (delta: -86.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:52,447 INFO L168 Benchmark]: RCFGBuilder took 275.80 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 164.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:52,448 INFO L168 Benchmark]: TraceAbstraction took 983.01 ms. Allocated memory is still 201.9 MB. Free memory was 163.0 MB in the beginning and 99.4 MB in the end (delta: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:52,455 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 245.54 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 93.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.38 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 179.3 MB in the end (delta: -86.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 275.80 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 164.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 983.01 ms. Allocated memory is still 201.9 MB. Free memory was 163.0 MB in the beginning and 99.4 MB in the end (delta: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 24 SDslu, 42 SDs, 0 SdLazy, 67 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 40 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...