/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:18:01,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:18:01,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:18:01,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:18:01,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:18:01,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:18:01,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:18:01,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:18:01,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:18:01,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:18:01,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:18:01,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:18:01,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:18:01,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:18:01,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:18:01,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:18:01,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:18:01,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:18:01,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:18:01,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:18:01,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:18:01,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:18:01,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:18:01,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:18:01,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 22:18:01,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 22:18:01,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 22:18:01,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 22:18:01,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 22:18:01,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 22:18:01,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 22:18:01,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 22:18:01,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 22:18:01,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 22:18:01,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 22:18:01,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 22:18:01,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 22:18:01,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 22:18:01,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:18:01,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:18:01,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:18:01,287 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 22:18:01,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:18:01,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:18:01,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:18:01,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:18:01,326 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:18:01,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:18:01,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:18:01,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:18:01,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:18:01,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:18:01,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:18:01,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:18:01,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:18:01,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:18:01,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:18:01,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:18:01,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:18:01,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:18:01,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:18:01,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:18:01,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:18:01,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:18:01,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:18:01,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:18:01,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:18:01,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:18:01,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:18:01,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:18:01,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:18:01,333 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 [2020-07-20 22:18:01,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:18:01,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:18:01,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:18:01,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:18:01,598 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:18:01,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c [2020-07-20 22:18:01,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d8320c68/c8259cd200f140eba0fd8735a01d7017/FLAGf6284198e [2020-07-20 22:18:02,112 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:18:02,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2.c [2020-07-20 22:18:02,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d8320c68/c8259cd200f140eba0fd8735a01d7017/FLAGf6284198e [2020-07-20 22:18:02,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d8320c68/c8259cd200f140eba0fd8735a01d7017 [2020-07-20 22:18:02,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:18:02,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:18:02,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:18:02,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:18:02,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:18:02,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:18:02" (1/1) ... [2020-07-20 22:18:02,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478c2760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02, skipping insertion in model container [2020-07-20 22:18:02,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:18:02" (1/1) ... [2020-07-20 22:18:02,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:18:02,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:18:02,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:18:02,735 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:18:02,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:18:02,761 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:18:02,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02 WrapperNode [2020-07-20 22:18:02,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:18:02,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:18:02,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:18:02,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:18:02,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02" (1/1) ... [2020-07-20 22:18:02,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02" (1/1) ... [2020-07-20 22:18:02,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02" (1/1) ... [2020-07-20 22:18:02,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02" (1/1) ... [2020-07-20 22:18:02,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02" (1/1) ... [2020-07-20 22:18:02,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02" (1/1) ... [2020-07-20 22:18:02,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02" (1/1) ... [2020-07-20 22:18:02,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:18:02,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:18:02,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:18:02,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:18:02,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02" (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 22:18:02,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:18:02,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:18:02,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 22:18:02,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:18:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:18:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 22:18:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:18:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:18:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:18:03,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:18:03,049 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:18:03,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:18:03 BoogieIcfgContainer [2020-07-20 22:18:03,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:18:03,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:18:03,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:18:03,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:18:03,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:18:02" (1/3) ... [2020-07-20 22:18:03,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419378ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:18:03, skipping insertion in model container [2020-07-20 22:18:03,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:18:02" (2/3) ... [2020-07-20 22:18:03,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419378ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:18:03, skipping insertion in model container [2020-07-20 22:18:03,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:18:03" (3/3) ... [2020-07-20 22:18:03,060 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2.c [2020-07-20 22:18:03,067 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:18:03,073 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:18:03,086 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:18:03,107 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:18:03,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:18:03,108 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:18:03,108 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:18:03,108 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:18:03,108 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:18:03,108 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:18:03,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:18:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-20 22:18:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 22:18:03,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:18:03,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:18:03,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:18:03,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:18:03,136 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2020-07-20 22:18:03,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:18:03,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338933032] [2020-07-20 22:18:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 [2020-07-20 22:18:03,209 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:18:03,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:18:03,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 22:18:03,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:18:03,323 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 22:18:03,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:18:03,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338933032] [2020-07-20 22:18:03,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:18:03,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:18:03,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713230241] [2020-07-20 22:18:03,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:18:03,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:18:03,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:18:03,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:18:03,360 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-07-20 22:18:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:18:03,438 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-07-20 22:18:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:18:03,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 22:18:03,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:18:03,446 INFO L225 Difference]: With dead ends: 24 [2020-07-20 22:18:03,446 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:18:03,450 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 [2020-07-20 22:18:03,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:18:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:18:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:18:03,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:18:03,474 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-20 22:18:03,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:18:03,474 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:18:03,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:18:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:18:03,475 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:18:03,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:18:03,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:18:03,747 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 22:18:03,747 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:18:03,748 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:18:03,748 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 22:18:03,748 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:18:03,748 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:18:03,749 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true [2020-07-20 22:18:03,749 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 18) no Hoare annotation was computed. [2020-07-20 22:18:03,749 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= 0 main_~x~0) [2020-07-20 22:18:03,749 INFO L264 CegarLoopResult]: At program point L14-1(lines 12 15) the Hoare annotation is: (= 0 main_~x~0) [2020-07-20 22:18:03,750 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 18) no Hoare annotation was computed. [2020-07-20 22:18:03,750 INFO L264 CegarLoopResult]: At program point L12-2(lines 12 15) the Hoare annotation is: false [2020-07-20 22:18:03,750 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-20 22:18:03,750 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-20 22:18:03,751 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 22:18:03,751 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-20 22:18:03,751 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-20 22:18:03,751 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-20 22:18:03,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:18:03 BoogieIcfgContainer [2020-07-20 22:18:03,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:18:03,768 INFO L168 Benchmark]: Toolchain (without parser) took 1227.87 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 104.6 MB in the beginning and 142.4 MB in the end (delta: -37.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:18:03,769 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 22:18:03,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.31 ms. Allocated memory is still 139.5 MB. Free memory was 104.2 MB in the beginning and 95.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:18:03,771 INFO L168 Benchmark]: Boogie Preprocessor took 97.71 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 95.0 MB in the beginning and 183.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:18:03,772 INFO L168 Benchmark]: RCFGBuilder took 192.38 ms. Allocated memory is still 203.4 MB. Free memory was 183.5 MB in the beginning and 172.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-20 22:18:03,773 INFO L168 Benchmark]: TraceAbstraction took 711.60 ms. Allocated memory is still 203.4 MB. Free memory was 171.9 MB in the beginning and 142.4 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-07-20 22:18:03,778 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 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 220.31 ms. Allocated memory is still 139.5 MB. Free memory was 104.2 MB in the beginning and 95.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.71 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 95.0 MB in the beginning and 183.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 192.38 ms. Allocated memory is still 203.4 MB. Free memory was 183.5 MB in the beginning and 172.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 711.60 ms. Allocated memory is still 203.4 MB. Free memory was 171.9 MB in the beginning and 142.4 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 6 SDslu, 19 SDs, 0 SdLazy, 7 SolverSat, 1 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, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 SizeOfPredicates, 2 NumberOfNonLiveVariables, 16 ConjunctsInSsa, 5 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...