/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invariants/bin-suffix-5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 12:18:17,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 12:18:17,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 12:18:17,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 12:18:17,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 12:18:17,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 12:18:17,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 12:18:17,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 12:18:17,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 12:18:17,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 12:18:17,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 12:18:17,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 12:18:17,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 12:18:17,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 12:18:17,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 12:18:17,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 12:18:17,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 12:18:17,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 12:18:17,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 12:18:17,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 12:18:17,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 12:18:17,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 12:18:17,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 12:18:17,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 12:18:17,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 12:18:17,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 12:18:17,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 12:18:17,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 12:18:17,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 12:18:17,244 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 12:18:17,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 12:18:17,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 12:18:17,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 12:18:17,246 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 12:18:17,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 12:18:17,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 12:18:17,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 12:18:17,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 12:18:17,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 12:18:17,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 12:18:17,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 12:18:17,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 12:18:17,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 12:18:17,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 12:18:17,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 12:18:17,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 12:18:17,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 12:18:17,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 12:18:17,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 12:18:17,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 12:18:17,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:18:17,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 12:18:17,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 12:18:17,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 12:18:17,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 12:18:17,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:17,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 12:18:17,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 12:18:17,251 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 -> NOT_INCREMENTALLY [2020-07-20 12:18:17,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 12:18:17,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 12:18:17,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 12:18:17,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 12:18:17,528 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 12:18:17,529 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/bin-suffix-5.c [2020-07-20 12:18:17,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3a61ef44/25f1199704394b04b1035e93783dabe1/FLAG5ac84d5c9 [2020-07-20 12:18:18,025 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 12:18:18,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/bin-suffix-5.c [2020-07-20 12:18:18,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3a61ef44/25f1199704394b04b1035e93783dabe1/FLAG5ac84d5c9 [2020-07-20 12:18:18,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3a61ef44/25f1199704394b04b1035e93783dabe1 [2020-07-20 12:18:18,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 12:18:18,486 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 12:18:18,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 12:18:18,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 12:18:18,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 12:18:18,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:18:18" (1/1) ... [2020-07-20 12:18:18,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b46a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18, skipping insertion in model container [2020-07-20 12:18:18,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:18:18" (1/1) ... [2020-07-20 12:18:18,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 12:18:18,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 12:18:18,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:18:18,685 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 12:18:18,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:18:18,711 INFO L208 MainTranslator]: Completed translation [2020-07-20 12:18:18,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18 WrapperNode [2020-07-20 12:18:18,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 12:18:18,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 12:18:18,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 12:18:18,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 12:18:18,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18" (1/1) ... [2020-07-20 12:18:18,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18" (1/1) ... [2020-07-20 12:18:18,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18" (1/1) ... [2020-07-20 12:18:18,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18" (1/1) ... [2020-07-20 12:18:18,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18" (1/1) ... [2020-07-20 12:18:18,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18" (1/1) ... [2020-07-20 12:18:18,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18" (1/1) ... [2020-07-20 12:18:18,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 12:18:18,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 12:18:18,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 12:18:18,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 12:18:18,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:18:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 12:18:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 12:18:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 12:18:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 12:18:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 12:18:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 12:18:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 12:18:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 12:18:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 12:18:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 12:18:19,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 12:18:19,039 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 12:18:19,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:18:19 BoogieIcfgContainer [2020-07-20 12:18:19,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 12:18:19,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 12:18:19,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 12:18:19,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 12:18:19,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:18:18" (1/3) ... [2020-07-20 12:18:19,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414d1e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:18:19, skipping insertion in model container [2020-07-20 12:18:19,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:18" (2/3) ... [2020-07-20 12:18:19,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414d1e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:18:19, skipping insertion in model container [2020-07-20 12:18:19,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:18:19" (3/3) ... [2020-07-20 12:18:19,052 INFO L109 eAbstractionObserver]: Analyzing ICFG bin-suffix-5.c [2020-07-20 12:18:19,060 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 12:18:19,066 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 12:18:19,077 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 12:18:19,100 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 12:18:19,100 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 12:18:19,100 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 12:18:19,100 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 12:18:19,101 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 12:18:19,101 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 12:18:19,101 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 12:18:19,101 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 12:18:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-20 12:18:19,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 12:18:19,121 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:18:19,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:18:19,122 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:18:19,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:18:19,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2020-07-20 12:18:19,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:18:19,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513895024] [2020-07-20 12:18:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:18:19,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 12:18:19,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:18:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:18:19,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:18:19,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513895024] [2020-07-20 12:18:19,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:18:19,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 12:18:19,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307343826] [2020-07-20 12:18:19,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 12:18:19,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:18:19,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 12:18:19,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 12:18:19,257 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-20 12:18:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:18:19,280 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-07-20 12:18:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 12:18:19,282 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-20 12:18:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:18:19,290 INFO L225 Difference]: With dead ends: 31 [2020-07-20 12:18:19,290 INFO L226 Difference]: Without dead ends: 12 [2020-07-20 12:18:19,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 12:18:19,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-20 12:18:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-20 12:18:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-20 12:18:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-20 12:18:19,330 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-20 12:18:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:18:19,331 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-20 12:18:19,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 12:18:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-20 12:18:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 12:18:19,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:18:19,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:18:19,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:19,546 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:18:19,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:18:19,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1890620952, now seen corresponding path program 1 times [2020-07-20 12:18:19,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:18:19,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589203325] [2020-07-20 12:18:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 12:18:19,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 12:18:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 12:18:19,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 12:18:19,608 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 12:18:19,617 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 12:18:19,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:19,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 12:18:19 BoogieIcfgContainer [2020-07-20 12:18:19,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 12:18:19,855 INFO L168 Benchmark]: Toolchain (without parser) took 1370.13 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 145.5 MB in the end (delta: -42.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-20 12:18:19,856 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 12:18:19,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.73 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-20 12:18:19,859 INFO L168 Benchmark]: Boogie Preprocessor took 99.69 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.9 MB in the beginning and 181.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-20 12:18:19,860 INFO L168 Benchmark]: RCFGBuilder took 232.48 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 170.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-07-20 12:18:19,861 INFO L168 Benchmark]: TraceAbstraction took 806.30 ms. Allocated memory is still 202.9 MB. Free memory was 169.6 MB in the beginning and 145.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-07-20 12:18:19,866 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 225.73 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.69 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.9 MB in the beginning and 181.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 232.48 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 170.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 806.30 ms. Allocated memory is still 202.9 MB. Free memory was 169.6 MB in the beginning and 145.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 14. Possible FailurePath: [L10] unsigned int x = 5; VAL [x=5] [L11] COND FALSE !(__VERIFIER_nondet_int()) [L14] CALL __VERIFIER_assert((x & 5) == 5) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...