/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 BIGGEST_EQUIVALENCE_CLASS --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/array-fpi/ifcompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:38:23,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:38:23,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:38:23,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:38:23,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:38:23,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:38:23,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:38:23,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:38:23,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:38:23,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:38:23,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:38:23,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:38:23,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:38:23,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:38:23,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:38:23,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:38:23,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:38:23,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:38:23,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:38:23,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:38:23,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:38:23,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:38:23,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:38:23,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:38:23,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:38:23,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:38:23,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:38:23,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:38:23,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 01:38:23,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:38:23,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:38:23,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:38:23,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:38:23,401 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:38:23,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:38:23,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:38:23,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:38:23,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:38:23,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:38:23,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:38:23,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:38:23,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:38:23,404 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:38:23,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:38:23,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:38:23,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:38:23,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:38:23,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:38:23,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:38:23,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:38:23,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:38:23,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:38:23,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:38:23,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:38:23,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:38:23,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:38:23,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:38:23,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:38:23,407 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 -> 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 [2020-07-21 01:38:23,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:38:23,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:38:23,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:38:23,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:38:23,728 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:38:23,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifcompf.c [2020-07-21 01:38:23,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e11ef02f/4f21d17891e84f2885eecd4d4bf2e524/FLAGb4de3da22 [2020-07-21 01:38:24,295 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:38:24,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifcompf.c [2020-07-21 01:38:24,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e11ef02f/4f21d17891e84f2885eecd4d4bf2e524/FLAGb4de3da22 [2020-07-21 01:38:24,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e11ef02f/4f21d17891e84f2885eecd4d4bf2e524 [2020-07-21 01:38:24,720 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:38:24,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:38:24,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:38:24,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:38:24,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:38:24,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:38:24" (1/1) ... [2020-07-21 01:38:24,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19eb74fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:24, skipping insertion in model container [2020-07-21 01:38:24,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:38:24" (1/1) ... [2020-07-21 01:38:24,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:38:24,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:38:24,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:38:24,978 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:38:25,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:38:25,021 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:38:25,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:25 WrapperNode [2020-07-21 01:38:25,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:38:25,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:38:25,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:38:25,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:38:25,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:25" (1/1) ... [2020-07-21 01:38:25,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:25" (1/1) ... [2020-07-21 01:38:25,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:25" (1/1) ... [2020-07-21 01:38:25,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:25" (1/1) ... [2020-07-21 01:38:25,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:25" (1/1) ... [2020-07-21 01:38:25,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:25" (1/1) ... [2020-07-21 01:38:25,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:25" (1/1) ... [2020-07-21 01:38:25,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:38:25,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:38:25,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:38:25,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:38:25,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:38:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:38:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:38:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 01:38:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 01:38:25,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:38:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:38:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 01:38:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 01:38:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 01:38:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:38:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 01:38:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:38:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 01:38:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:38:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:38:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:38:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:38:25,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:38:25,563 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:38:25,564 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 01:38:25,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:38:25 BoogieIcfgContainer [2020-07-21 01:38:25,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:38:25,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:38:25,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:38:25,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:38:25,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:38:24" (1/3) ... [2020-07-21 01:38:25,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7003df6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:38:25, skipping insertion in model container [2020-07-21 01:38:25,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:25" (2/3) ... [2020-07-21 01:38:25,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7003df6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:38:25, skipping insertion in model container [2020-07-21 01:38:25,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:38:25" (3/3) ... [2020-07-21 01:38:25,582 INFO L109 eAbstractionObserver]: Analyzing ICFG ifcompf.c [2020-07-21 01:38:25,601 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:38:25,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:38:25,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:38:25,660 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:38:25,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:38:25,661 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:38:25,661 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:38:25,661 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:38:25,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:38:25,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:38:25,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:38:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-21 01:38:25,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 01:38:25,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:38:25,700 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] [2020-07-21 01:38:25,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:38:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:38:25,711 INFO L82 PathProgramCache]: Analyzing trace with hash -794599326, now seen corresponding path program 1 times [2020-07-21 01:38:25,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:38:25,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521112965] [2020-07-21 01:38:25,723 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 [2020-07-21 01:38:25,824 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:38:25,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:38:25,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:38:25,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:38:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:38:25,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:38:25,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521112965] [2020-07-21 01:38:25,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:38:25,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:38:25,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157320936] [2020-07-21 01:38:25,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:38:25,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:38:25,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:38:25,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:38:25,898 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-21 01:38:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:38:25,931 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-07-21 01:38:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:38:25,933 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-21 01:38:25,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:38:25,945 INFO L225 Difference]: With dead ends: 70 [2020-07-21 01:38:25,945 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 01:38:25,951 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 [2020-07-21 01:38:25,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 01:38:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-21 01:38:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 01:38:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-07-21 01:38:25,995 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2020-07-21 01:38:25,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:38:25,996 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-07-21 01:38:25,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:38:25,997 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-07-21 01:38:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 01:38:25,998 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:38:25,998 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] [2020-07-21 01:38:26,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:38:26,213 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:38:26,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:38:26,214 INFO L82 PathProgramCache]: Analyzing trace with hash -544938994, now seen corresponding path program 1 times [2020-07-21 01:38:26,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:38:26,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75815981] [2020-07-21 01:38:26,216 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 [2020-07-21 01:38:26,288 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:38:26,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:38:26,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 01:38:26,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:38:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:38:26,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:38:26,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75815981] [2020-07-21 01:38:26,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:38:26,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 01:38:26,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022590229] [2020-07-21 01:38:26,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:38:26,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:38:26,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:38:26,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:38:26,370 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 4 states. [2020-07-21 01:38:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:38:26,570 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2020-07-21 01:38:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:38:26,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-21 01:38:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:38:26,575 INFO L225 Difference]: With dead ends: 67 [2020-07-21 01:38:26,576 INFO L226 Difference]: Without dead ends: 48 [2020-07-21 01:38:26,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:38:26,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-21 01:38:26,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2020-07-21 01:38:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-21 01:38:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-07-21 01:38:26,593 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 24 [2020-07-21 01:38:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:38:26,593 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-07-21 01:38:26,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:38:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-07-21 01:38:26,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 01:38:26,595 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:38:26,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:38:26,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:38:26,810 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:38:26,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:38:26,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1796917477, now seen corresponding path program 1 times [2020-07-21 01:38:26,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:38:26,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165032658] [2020-07-21 01:38:26,812 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 [2020-07-21 01:38:26,908 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:38:26,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:38:26,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 01:38:26,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:38:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 01:38:26,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:38:26,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165032658] [2020-07-21 01:38:26,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:38:26,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:38:26,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676498019] [2020-07-21 01:38:26,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:38:26,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:38:26,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:38:26,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:38:26,943 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 3 states. [2020-07-21 01:38:27,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:38:27,042 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-07-21 01:38:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:38:27,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-21 01:38:27,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:38:27,045 INFO L225 Difference]: With dead ends: 72 [2020-07-21 01:38:27,045 INFO L226 Difference]: Without dead ends: 48 [2020-07-21 01:38:27,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:38:27,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-21 01:38:27,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2020-07-21 01:38:27,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 01:38:27,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-07-21 01:38:27,055 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 33 [2020-07-21 01:38:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:38:27,056 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-07-21 01:38:27,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:38:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-07-21 01:38:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 01:38:27,057 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:38:27,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:38:27,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:38:27,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:38:27,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:38:27,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1817991449, now seen corresponding path program 1 times [2020-07-21 01:38:27,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:38:27,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001247155] [2020-07-21 01:38:27,277 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:38:27,335 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:38:27,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:38:27,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 01:38:27,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:38:27,399 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 11 treesize of output 7 [2020-07-21 01:38:27,400 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:38:27,404 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:38:27,405 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:38:27,406 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-21 01:38:27,441 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:38:27,441 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-07-21 01:38:27,443 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-21 01:38:27,454 INFO L624 ElimStorePlain]: treesize reduction 9, result has 43.8 percent of original size [2020-07-21 01:38:27,455 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:38:27,455 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-07-21 01:38:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 01:38:27,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:38:27,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001247155] [2020-07-21 01:38:27,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:38:27,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 01:38:27,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584214599] [2020-07-21 01:38:27,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:38:27,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:38:27,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:38:27,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:38:27,488 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 7 states. [2020-07-21 01:38:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:38:27,643 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-07-21 01:38:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:38:27,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-07-21 01:38:27,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:38:27,645 INFO L225 Difference]: With dead ends: 52 [2020-07-21 01:38:27,646 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 01:38:27,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:38:27,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 01:38:27,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-07-21 01:38:27,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-21 01:38:27,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-07-21 01:38:27,659 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 33 [2020-07-21 01:38:27,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:38:27,659 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-07-21 01:38:27,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:38:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-07-21 01:38:27,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-21 01:38:27,661 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:38:27,661 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:38:27,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:38:27,875 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:38:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:38:27,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1651297135, now seen corresponding path program 1 times [2020-07-21 01:38:27,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:38:27,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151621566] [2020-07-21 01:38:27,876 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:38:27,934 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:38:27,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:38:27,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:38:27,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:38:28,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 01:38:28,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:38:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 01:38:28,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151621566] [2020-07-21 01:38:28,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:38:28,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-21 01:38:28,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912632147] [2020-07-21 01:38:28,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 01:38:28,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:38:28,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 01:38:28,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:38:28,095 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 9 states. [2020-07-21 01:38:28,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:38:28,415 INFO L93 Difference]: Finished difference Result 113 states and 132 transitions. [2020-07-21 01:38:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:38:28,416 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-07-21 01:38:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:38:28,417 INFO L225 Difference]: With dead ends: 113 [2020-07-21 01:38:28,418 INFO L226 Difference]: Without dead ends: 65 [2020-07-21 01:38:28,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:38:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-21 01:38:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2020-07-21 01:38:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-21 01:38:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-07-21 01:38:28,430 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 41 [2020-07-21 01:38:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:38:28,431 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-07-21 01:38:28,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 01:38:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-07-21 01:38:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-21 01:38:28,433 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:38:28,433 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:38:28,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:38:28,647 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:38:28,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:38:28,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2142090186, now seen corresponding path program 1 times [2020-07-21 01:38:28,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:38:28,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789520414] [2020-07-21 01:38:28,650 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:38:28,751 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:38:28,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:38:28,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 01:38:28,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:38:28,794 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:38:28,795 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2020-07-21 01:38:28,797 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:38:28,805 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:38:28,806 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:38:28,807 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:4 [2020-07-21 01:38:28,830 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-21 01:38:28,830 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:38:28,837 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:38:28,837 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:38:28,838 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-07-21 01:38:29,007 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-07-21 01:38:29,008 INFO L350 Elim1Store]: treesize reduction 76, result has 62.0 percent of original size [2020-07-21 01:38:29,009 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 140 [2020-07-21 01:38:29,012 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:38:29,093 INFO L624 ElimStorePlain]: treesize reduction 106, result has 38.0 percent of original size [2020-07-21 01:38:29,101 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:38:29,102 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:50, output treesize:12 [2020-07-21 01:38:29,149 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-07-21 01:38:29,150 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:38:29,159 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:38:29,160 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:38:29,160 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-07-21 01:38:29,220 INFO L350 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2020-07-21 01:38:29,221 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2020-07-21 01:38:29,224 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:38:29,256 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:38:29,258 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 01:38:29,258 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:36 [2020-07-21 01:38:29,599 INFO L350 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2020-07-21 01:38:29,600 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 41 [2020-07-21 01:38:29,601 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:38:29,618 INFO L624 ElimStorePlain]: treesize reduction 23, result has 32.4 percent of original size [2020-07-21 01:38:29,620 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:38:29,620 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:50, output treesize:7 [2020-07-21 01:38:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-21 01:38:29,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:38:29,722 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:38:30,915 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~c~0.offset Int)) (= 1 (select (let ((.cse0 (store (select |c_#memory_int| c_main_~c~0.base) main_~c~0.offset 0)) (.cse1 (* c_main_~i~0 8))) (store .cse0 (+ .cse1 main_~c~0.offset 8) (+ (select (select (store |c_#memory_int| c_main_~c~0.base .cse0) c_main_~b~0.base) (+ c_main_~b~0.offset .cse1)) (select .cse0 (+ .cse1 main_~c~0.offset))))) (+ main_~c~0.offset 8)))) is different from false [2020-07-21 01:38:31,436 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~c~0.offset Int)) (= 1 (select (select (store |c_#memory_int| c_main_~c~0.base (store (select |c_#memory_int| c_main_~c~0.base) main_~c~0.offset 0)) c_main_~b~0.base) c_main_~b~0.offset))) is different from false [2020-07-21 01:38:33,510 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~a~0.offset Int) (main_~c~0.offset Int) (main_~a~0.base Int)) (= 1 (select (select (let ((.cse0 (store |c_#memory_int| c_main_~b~0.base (let ((.cse1 (select |c_#memory_int| c_main_~b~0.base)) (.cse2 (* c_main_~i~0 8))) (store .cse1 (+ c_main_~b~0.offset .cse2) (+ (select .cse1 (+ c_main_~b~0.offset .cse2 (- 8))) (select (select |c_#memory_int| main_~a~0.base) (+ .cse2 main_~a~0.offset (- 8))))))))) (store .cse0 c_main_~c~0.base (store (select .cse0 c_main_~c~0.base) main_~c~0.offset 0))) c_main_~b~0.base) c_main_~b~0.offset))) is different from false [2020-07-21 01:38:35,536 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~a~0.offset Int) (main_~c~0.offset Int) (main_~a~0.base Int) (v_main_~i~0_50 Int)) (or (< v_main_~i~0_50 (+ c_main_~i~0 1)) (= 1 (select (select (let ((.cse0 (store |c_#memory_int| c_main_~b~0.base (let ((.cse1 (select |c_#memory_int| c_main_~b~0.base)) (.cse2 (* v_main_~i~0_50 8))) (store .cse1 (+ c_main_~b~0.offset .cse2) (+ (select .cse1 (+ c_main_~b~0.offset .cse2 (- 8))) (select (select |c_#memory_int| main_~a~0.base) (+ main_~a~0.offset .cse2 (- 8))))))))) (store .cse0 c_main_~c~0.base (store (select .cse0 c_main_~c~0.base) main_~c~0.offset 0))) c_main_~b~0.base) c_main_~b~0.offset)))) is different from false [2020-07-21 01:38:35,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789520414] [2020-07-21 01:38:35,544 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: incompatible size [2020-07-21 01:38:35,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:38:35,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-07-21 01:38:35,544 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-07-21 01:38:35,544 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 01:38:35,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:38:35,784 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-21 01:38:35,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:38:35 BoogieIcfgContainer [2020-07-21 01:38:35,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:38:35,787 INFO L168 Benchmark]: Toolchain (without parser) took 11065.69 ms. Allocated memory was 140.0 MB in the beginning and 243.3 MB in the end (delta: 103.3 MB). Free memory was 103.3 MB in the beginning and 214.0 MB in the end (delta: -110.7 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:38:35,788 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 01:38:35,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.33 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 91.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:38:35,789 INFO L168 Benchmark]: Boogie Preprocessor took 130.45 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.9 MB in the beginning and 180.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:38:35,790 INFO L168 Benchmark]: RCFGBuilder took 416.72 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 161.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-07-21 01:38:35,791 INFO L168 Benchmark]: TraceAbstraction took 10213.21 ms. Allocated memory was 202.9 MB in the beginning and 243.3 MB in the end (delta: 40.4 MB). Free memory was 160.6 MB in the beginning and 214.0 MB in the end (delta: -53.4 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. [2020-07-21 01:38:35,797 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.33 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 91.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.45 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.9 MB in the beginning and 180.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.72 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 161.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10213.21 ms. Allocated memory was 202.9 MB in the beginning and 243.3 MB in the end (delta: 40.4 MB). Free memory was 160.6 MB in the beginning and 214.0 MB in the end (delta: -53.4 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND TRUE i