/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 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:41:06,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:41:06,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:41:06,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:41:06,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:41:06,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:41:06,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:41:06,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:41:06,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:41:06,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:41:06,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:41:06,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:41:06,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:41:06,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:41:06,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:41:06,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:41:06,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:41:06,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:41:06,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:41:06,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:41:06,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:41:06,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:41:06,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:41:06,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:41:06,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:41:06,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:41:06,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:41:06,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:41:06,652 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 16:41:06,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:41:06,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:41:06,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:41:06,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:41:06,679 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:41:06,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:41:06,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:41:06,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:41:06,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:41:06,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:41:06,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:41:06,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:41:06,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:41:06,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:41:06,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:41:06,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:41:06,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:41:06,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:41:06,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:41:06,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:41:06,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:41:06,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:41:06,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:41:06,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:41:06,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:41:06,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:41:06,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:06,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:41:06,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:41:06,685 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 -> 2 [2020-07-21 16:41:07,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:41:07,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:41:07,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:41:07,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:41:07,028 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:41:07,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2020-07-21 16:41:07,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40ad7be93/4ec19f6187e34badafd5d34732bc8556/FLAG016fe1623 [2020-07-21 16:41:07,543 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:41:07,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c [2020-07-21 16:41:07,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40ad7be93/4ec19f6187e34badafd5d34732bc8556/FLAG016fe1623 [2020-07-21 16:41:07,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40ad7be93/4ec19f6187e34badafd5d34732bc8556 [2020-07-21 16:41:07,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:41:07,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:41:07,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:41:07,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:41:07,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:41:07,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5e8696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07, skipping insertion in model container [2020-07-21 16:41:07,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:41:07,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:41:08,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:41:08,121 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:41:08,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:41:08,156 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:41:08,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:08 WrapperNode [2020-07-21 16:41:08,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:41:08,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:41:08,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:41:08,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:41:08,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:08" (1/1) ... [2020-07-21 16:41:08,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:08" (1/1) ... [2020-07-21 16:41:08,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:08" (1/1) ... [2020-07-21 16:41:08,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:08" (1/1) ... [2020-07-21 16:41:08,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:08" (1/1) ... [2020-07-21 16:41:08,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:08" (1/1) ... [2020-07-21 16:41:08,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:08" (1/1) ... [2020-07-21 16:41:08,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:41:08,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:41:08,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:41:08,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:41:08,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:08" (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 16:41:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:41:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:41:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 16:41:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 16:41:08,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:41:08,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:41:08,325 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:41:08,325 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 16:41:08,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 16:41:08,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:41:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:41:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:41:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:41:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:41:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:41:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:41:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:41:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:41:08,573 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:41:08,573 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-21 16:41:08,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:08 BoogieIcfgContainer [2020-07-21 16:41:08,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:41:08,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:41:08,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:41:08,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:41:08,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:41:07" (1/3) ... [2020-07-21 16:41:08,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8839b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:41:08, skipping insertion in model container [2020-07-21 16:41:08,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:08" (2/3) ... [2020-07-21 16:41:08,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8839b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:41:08, skipping insertion in model container [2020-07-21 16:41:08,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:08" (3/3) ... [2020-07-21 16:41:08,586 INFO L109 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-07-21 16:41:08,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:41:08,605 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:41:08,623 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:41:08,651 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:41:08,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:41:08,651 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:41:08,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:41:08,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:41:08,652 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:41:08,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:41:08,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:41:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-07-21 16:41:08,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 16:41:08,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:08,692 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] [2020-07-21 16:41:08,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:08,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1524373234, now seen corresponding path program 1 times [2020-07-21 16:41:08,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:08,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074463357] [2020-07-21 16:41:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:41:08,835 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:41:08,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:41:08,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:41:08,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:41:08,866 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 16:41:08,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:41:08,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074463357] [2020-07-21 16:41:08,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:41:08,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:41:08,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508448501] [2020-07-21 16:41:08,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:41:08,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:41:08,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:41:08,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:41:08,888 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-07-21 16:41:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:41:08,913 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-07-21 16:41:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:41:08,914 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-21 16:41:08,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:41:08,923 INFO L225 Difference]: With dead ends: 60 [2020-07-21 16:41:08,923 INFO L226 Difference]: Without dead ends: 30 [2020-07-21 16:41:08,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 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 16:41:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-21 16:41:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-21 16:41:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-21 16:41:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-21 16:41:08,966 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-07-21 16:41:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:41:08,966 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-21 16:41:08,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:41:08,967 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-21 16:41:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 16:41:08,968 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:08,968 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] [2020-07-21 16:41:09,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:09,176 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:09,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2111179248, now seen corresponding path program 1 times [2020-07-21 16:41:09,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:09,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550477783] [2020-07-21 16:41:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:41:09,235 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:41:09,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:41:09,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:41:09,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:41:09,289 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 16:41:09,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:41:09,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550477783] [2020-07-21 16:41:09,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:41:09,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:41:09,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452600204] [2020-07-21 16:41:09,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:41:09,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:41:09,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:41:09,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:41:09,295 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2020-07-21 16:41:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:41:09,386 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-07-21 16:41:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:41:09,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-21 16:41:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:41:09,390 INFO L225 Difference]: With dead ends: 54 [2020-07-21 16:41:09,390 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 16:41:09,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 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 16:41:09,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 16:41:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-07-21 16:41:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 16:41:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-21 16:41:09,404 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2020-07-21 16:41:09,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:41:09,404 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-21 16:41:09,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:41:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-21 16:41:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 16:41:09,406 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:09,406 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] [2020-07-21 16:41:09,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:09,620 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:09,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:09,621 INFO L82 PathProgramCache]: Analyzing trace with hash 373909448, now seen corresponding path program 1 times [2020-07-21 16:41:09,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:09,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478163026] [2020-07-21 16:41:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:41:09,688 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:41:09,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:41:09,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:41:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:41:09,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:41:09,730 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:41:09,730 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:41:09,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:09,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:41:09 BoogieIcfgContainer [2020-07-21 16:41:09,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:41:09,988 INFO L168 Benchmark]: Toolchain (without parser) took 2074.38 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 105.6 MB in the beginning and 103.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:09,989 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 16:41:09,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.56 ms. Allocated memory is still 141.0 MB. Free memory was 105.2 MB in the beginning and 95.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:09,991 INFO L168 Benchmark]: Boogie Preprocessor took 112.12 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 95.0 MB in the beginning and 181.2 MB in the end (delta: -86.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:09,992 INFO L168 Benchmark]: RCFGBuilder took 307.92 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 164.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:09,993 INFO L168 Benchmark]: TraceAbstraction took 1406.89 ms. Allocated memory is still 202.9 MB. Free memory was 163.3 MB in the beginning and 103.3 MB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:09,998 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.56 ms. Allocated memory is still 141.0 MB. Free memory was 105.2 MB in the beginning and 95.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.12 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 95.0 MB in the beginning and 181.2 MB in the end (delta: -86.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 307.92 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 164.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1406.89 ms. Allocated memory is still 202.9 MB. Free memory was 163.3 MB in the beginning and 103.3 MB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=6, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] int *a = malloc(sizeof(int)*N); [L28] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L28] COND TRUE i < N [L30] a[i] = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L28] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L28] COND FALSE !(i < N) VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L33] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L33] COND TRUE i < N VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] COND TRUE N%2 == 1 [L37] EXPR a[i] [L37] a[i] = a[i] + 2 [L33] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L33] COND FALSE !(i < N) VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L45] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L45] COND TRUE i < N [L47] EXPR a[i] VAL [\old(N)=0, a={-1:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L47] CALL __VERIFIER_assert(a[i] % 2 == N % 2) VAL [\old(cond)=0, \old(N)=0, N=1] [L13] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L13] __VERIFIER_error() VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 34 SDslu, 13 SDs, 0 SdLazy, 29 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1260 SizeOfPredicates, 2 NumberOfNonLiveVariables, 168 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...