/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 NUM_VARIABLES --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/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:11:09,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 17:11:09,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 17:11:09,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 17:11:09,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 17:11:09,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 17:11:09,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 17:11:09,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 17:11:09,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 17:11:09,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 17:11:09,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 17:11:09,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 17:11:09,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:11:09,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:11:09,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:11:09,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:11:09,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:11:09,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:11:09,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:11:09,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:11:09,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:11:09,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:11:09,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:11:09,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:11:09,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:11:09,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 17:11:09,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 17:11:09,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 17:11:09,377 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 17:11:09,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:11:09,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:11:09,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:11:09,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:11:09,396 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:11:09,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:11:09,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:11:09,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:11:09,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:11:09,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:11:09,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:11:09,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:11:09,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:11:09,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:11:09,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:11:09,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:11:09,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:11:09,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:11:09,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:11:09,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:11:09,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:11:09,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:11:09,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:11:09,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:11:09,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:11:09,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:11:09,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:11:09,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:11:09,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:11:09,402 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 -> NUM_VARIABLES 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 17:11:09,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:11:09,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:11:09,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:11:09,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:11:09,805 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:11:09,806 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-07-20 17:11:09,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643f12634/6b3771834bc4430a86a1348d0eceb300/FLAG219f617e3 [2020-07-20 17:11:10,507 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:11:10,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-07-20 17:11:10,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643f12634/6b3771834bc4430a86a1348d0eceb300/FLAG219f617e3 [2020-07-20 17:11:10,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643f12634/6b3771834bc4430a86a1348d0eceb300 [2020-07-20 17:11:10,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:11:10,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:11:10,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:11:10,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:11:10,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:11:10,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:11:10" (1/1) ... [2020-07-20 17:11:10,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3453208d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:10, skipping insertion in model container [2020-07-20 17:11:10,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:11:10" (1/1) ... [2020-07-20 17:11:10,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:11:10,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:11:11,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:11:11,144 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:11:11,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:11:11,192 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:11:11,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:11 WrapperNode [2020-07-20 17:11:11,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:11:11,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:11:11,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:11:11,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:11:11,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:11" (1/1) ... [2020-07-20 17:11:11,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:11" (1/1) ... [2020-07-20 17:11:11,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:11" (1/1) ... [2020-07-20 17:11:11,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:11" (1/1) ... [2020-07-20 17:11:11,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:11" (1/1) ... [2020-07-20 17:11:11,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:11" (1/1) ... [2020-07-20 17:11:11,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:11" (1/1) ... [2020-07-20 17:11:11,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:11:11,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:11:11,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:11:11,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:11:11,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:11" (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 17:11:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:11:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:11:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 17:11:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 17:11:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-20 17:11:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:11:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-20 17:11:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 17:11:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 17:11:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:11:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 17:11:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 17:11:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 17:11:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:11:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 17:11:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 17:11:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:11:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 17:11:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-20 17:11:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 17:11:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:11:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:11:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 17:11:11,808 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:11:11,809 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 17:11:11,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:11:11 BoogieIcfgContainer [2020-07-20 17:11:11,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:11:11,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:11:11,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:11:11,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:11:11,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:11:10" (1/3) ... [2020-07-20 17:11:11,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcf6930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:11:11, skipping insertion in model container [2020-07-20 17:11:11,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:11:11" (2/3) ... [2020-07-20 17:11:11,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcf6930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:11:11, skipping insertion in model container [2020-07-20 17:11:11,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:11:11" (3/3) ... [2020-07-20 17:11:11,831 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-07-20 17:11:11,851 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:11:11,864 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 17:11:11,890 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 17:11:11,940 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:11:11,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:11:11,941 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:11:11,941 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:11:11,941 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:11:11,941 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:11:11,942 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:11:11,942 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:11:11,972 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-20 17:11:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 17:11:11,981 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:11:11,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:11:11,984 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:11:11,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:11:11,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1882906983, now seen corresponding path program 1 times [2020-07-20 17:11:12,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:11:12,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903575134] [2020-07-20 17:11:12,006 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 17:11:12,136 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 17:11:12,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:11:12,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 17:11:12,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:11:12,185 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 17:11:12,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:11:12,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903575134] [2020-07-20 17:11:12,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:11:12,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 17:11:12,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707275165] [2020-07-20 17:11:12,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 17:11:12,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:11:12,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 17:11:12,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 17:11:12,221 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-07-20 17:11:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:11:12,267 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2020-07-20 17:11:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 17:11:12,269 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-20 17:11:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:11:12,281 INFO L225 Difference]: With dead ends: 77 [2020-07-20 17:11:12,282 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 17:11:12,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 17:11:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 17:11:12,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-20 17:11:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 17:11:12,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-07-20 17:11:12,339 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 24 [2020-07-20 17:11:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:11:12,340 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-07-20 17:11:12,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 17:11:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-07-20 17:11:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 17:11:12,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:11:12,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:11:12,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:11:12,562 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:11:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:11:12,564 INFO L82 PathProgramCache]: Analyzing trace with hash 861838629, now seen corresponding path program 1 times [2020-07-20 17:11:12,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:11:12,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249912346] [2020-07-20 17:11:12,565 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:11:12,670 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:11:12,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:11:12,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 17:11:12,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:11:12,839 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:11:12,843 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:11:12,853 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:11:12,908 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 17:11:12,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:11:12,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249912346] [2020-07-20 17:11:12,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:11:12,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 17:11:12,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400724964] [2020-07-20 17:11:12,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 17:11:12,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:11:12,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 17:11:12,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 17:11:12,920 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-07-20 17:11:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:11:13,151 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-20 17:11:13,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:11:13,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-07-20 17:11:13,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:11:13,154 INFO L225 Difference]: With dead ends: 43 [2020-07-20 17:11:13,155 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 17:11:13,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 17:11:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 17:11:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 17:11:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 17:11:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-20 17:11:13,171 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2020-07-20 17:11:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:11:13,175 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-20 17:11:13,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 17:11:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-20 17:11:13,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 17:11:13,178 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:11:13,178 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:11:13,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:11:13,393 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:11:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:11:13,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1344635178, now seen corresponding path program 1 times [2020-07-20 17:11:13,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:11:13,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268805906] [2020-07-20 17:11:13,396 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:11:13,517 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:11:13,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:11:13,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 17:11:13,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:11:13,593 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2020-07-20 17:11:13,595 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:11:13,600 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:11:13,601 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:11:13,602 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2020-07-20 17:11:15,693 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) is different from true [2020-07-20 17:11:17,763 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_3 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_3))) is different from true [2020-07-20 17:11:19,805 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_4 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_4))) is different from true [2020-07-20 17:11:21,841 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_5 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_5))) is different from true [2020-07-20 17:11:21,898 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2020-07-20 17:11:21,900 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:11:21,907 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:11:21,911 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-20 17:11:21,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:21 [2020-07-20 17:11:21,957 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:11:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 12 not checked. [2020-07-20 17:11:22,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:11:22,075 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:11:24,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268805906] [2020-07-20 17:11:24,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 17:11:24,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-07-20 17:11:24,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448484195] [2020-07-20 17:11:24,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 17:11:24,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:11:24,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 17:11:24,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=112, Unknown=5, NotChecked=92, Total=240 [2020-07-20 17:11:24,181 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 14 states. [2020-07-20 17:11:26,318 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) (exists ((v_check_~a.base_BEFORE_CALL_3 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_3)))) is different from true [2020-07-20 17:11:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:11:26,479 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-07-20 17:11:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 17:11:26,480 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-07-20 17:11:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:11:26,481 INFO L225 Difference]: With dead ends: 47 [2020-07-20 17:11:26,482 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 17:11:26,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=52, Invalid=202, Unknown=6, NotChecked=160, Total=420 [2020-07-20 17:11:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 17:11:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 17:11:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 17:11:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 17:11:26,485 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-07-20 17:11:26,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:11:26,486 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 17:11:26,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 17:11:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 17:11:26,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 17:11:26,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:11:26,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 17:11:27,164 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:11:27,165 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:11:27,166 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:11:27,166 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:11:27,166 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 17:11:27,166 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:11:27,166 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:11:27,167 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-07-20 17:11:27,167 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-20 17:11:27,167 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-07-20 17:11:27,167 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-07-20 17:11:27,168 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 39 48) the Hoare annotation is: true [2020-07-20 17:11:27,168 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 39 48) no Hoare annotation was computed. [2020-07-20 17:11:27,168 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |main_#t~malloc10.base|)) (= .cse0 (select |#memory_int| main_~a~0.base)))) [2020-07-20 17:11:27,168 INFO L271 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: true [2020-07-20 17:11:27,168 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-20 17:11:27,168 INFO L271 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-07-20 17:11:27,169 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-07-20 17:11:27,169 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-07-20 17:11:27,169 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 39 48) no Hoare annotation was computed. [2020-07-20 17:11:27,169 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-07-20 17:11:27,169 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 37) the Hoare annotation is: true [2020-07-20 17:11:27,170 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-20 17:11:27,170 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-07-20 17:11:27,170 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-07-20 17:11:27,170 INFO L268 CegarLoopResult]: For program point L23(lines 23 24) no Hoare annotation was computed. [2020-07-20 17:11:27,171 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 24) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-20 17:11:27,171 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 37) no Hoare annotation was computed. [2020-07-20 17:11:27,171 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-20 17:11:27,171 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-07-20 17:11:27,172 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-20 17:11:27,172 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 37) no Hoare annotation was computed. [2020-07-20 17:11:27,172 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0))) (or (and (exists ((check_~x1~0 Int) (check_~i~0 Int) (check_~a.offset Int)) (let ((.cse0 ((as const (Array Int Int)) 0))) (and (<= (select .cse0 (+ (* check_~x1~0 4) check_~a.offset)) check_~ax~0) (<= check_~ai~0 (select .cse0 (+ (* check_~i~0 4) check_~a.offset)))))) (= .cse1 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse1 (select |#memory_int| |check_#in~a.base|))))) [2020-07-20 17:11:27,172 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-07-20 17:11:27,173 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-07-20 17:11:27,173 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-07-20 17:11:27,173 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-07-20 17:11:27,173 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-07-20 17:11:27,173 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-07-20 17:11:27,174 INFO L271 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:11:27,174 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:11:27,174 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:11:27,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:11:27 BoogieIcfgContainer [2020-07-20 17:11:27,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:11:27,186 INFO L168 Benchmark]: Toolchain (without parser) took 16379.27 ms. Allocated memory was 142.6 MB in the beginning and 228.6 MB in the end (delta: 86.0 MB). Free memory was 100.2 MB in the beginning and 105.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2020-07-20 17:11:27,187 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 142.6 MB. Free memory is still 118.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 17:11:27,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.39 ms. Allocated memory is still 142.6 MB. Free memory was 99.7 MB in the beginning and 89.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-20 17:11:27,189 INFO L168 Benchmark]: Boogie Preprocessor took 156.37 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 89.3 MB in the beginning and 177.5 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 17:11:27,190 INFO L168 Benchmark]: RCFGBuilder took 468.21 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 159.2 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-07-20 17:11:27,191 INFO L168 Benchmark]: TraceAbstraction took 15363.88 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 158.2 MB in the beginning and 105.5 MB in the end (delta: 52.7 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-07-20 17:11:27,195 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 142.6 MB. Free memory is still 118.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 382.39 ms. Allocated memory is still 142.6 MB. Free memory was 99.7 MB in the beginning and 89.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.37 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 89.3 MB in the beginning and 177.5 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.21 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 159.2 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15363.88 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 158.2 MB in the beginning and 105.5 MB in the end (delta: 52.7 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 7 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 37 SDslu, 290 SDs, 0 SdLazy, 138 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 36 PreInvPairs, 44 NumberOfFragments, 177 HoareAnnotationTreeSize, 36 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 101 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 98 ConstructedInterpolants, 17 QuantifiedInterpolants, 15638 SizeOfPredicates, 15 NumberOfNonLiveVariables, 405 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 10/22 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...