/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:57:11,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:57:11,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:57:11,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:57:11,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:57:11,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:57:11,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:57:11,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:57:11,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:57:11,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:57:11,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:57:11,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:57:11,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:57:11,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:57:11,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:57:11,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:57:11,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:57:11,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:57:11,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:57:11,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:57:11,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:57:11,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:57:11,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:57:11,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:57:11,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:57:11,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:57:11,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:57:11,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:57:11,284 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 [2020-08-22 16:57:11,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:57:11,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:57:11,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:57:11,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:57:11,323 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:57:11,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:57:11,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:57:11,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:57:11,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:57:11,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:57:11,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:57:11,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:57:11,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:57:11,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:57:11,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:57:11,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:57:11,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:57:11,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:57:11,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:57:11,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:57:11,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:57:11,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:57:11,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:57:11,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:57:11,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:57:11,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:57:11,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:57:11,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:57:11,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:57:11,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:57:11,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:57:11,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:57:11,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:57:11,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:57:11,651 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:57:11,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c [2020-08-22 16:57:11,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a78facc/05386734935d4ab29c91125def44b201/FLAG19640fc4b [2020-08-22 16:57:12,158 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:57:12,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c [2020-08-22 16:57:12,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a78facc/05386734935d4ab29c91125def44b201/FLAG19640fc4b [2020-08-22 16:57:12,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a78facc/05386734935d4ab29c91125def44b201 [2020-08-22 16:57:12,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:57:12,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:57:12,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:12,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:57:12,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:57:12,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:12" (1/1) ... [2020-08-22 16:57:12,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d3fa00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12, skipping insertion in model container [2020-08-22 16:57:12,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:12" (1/1) ... [2020-08-22 16:57:12,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:57:12,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:57:12,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:12,847 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:57:12,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:12,878 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:57:12,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12 WrapperNode [2020-08-22 16:57:12,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:12,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:57:12,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:57:12,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:57:12,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12" (1/1) ... [2020-08-22 16:57:12,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12" (1/1) ... [2020-08-22 16:57:12,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12" (1/1) ... [2020-08-22 16:57:12,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12" (1/1) ... [2020-08-22 16:57:12,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12" (1/1) ... [2020-08-22 16:57:12,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12" (1/1) ... [2020-08-22 16:57:12,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12" (1/1) ... [2020-08-22 16:57:13,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:57:13,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:57:13,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:57:13,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:57:13,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12" (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 [2020-08-22 16:57:13,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:57:13,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:57:13,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:57:13,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:57:13,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:57:13,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:57:13,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:57:13,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:57:13,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:57:13,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 16:57:13,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:57:13,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:57:13,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:57:13,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:57:13,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:57:13,261 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:57:13,262 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:57:13,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:13 BoogieIcfgContainer [2020-08-22 16:57:13,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:57:13,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:57:13,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:57:13,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:57:13,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:57:12" (1/3) ... [2020-08-22 16:57:13,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecb12c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:13, skipping insertion in model container [2020-08-22 16:57:13,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:12" (2/3) ... [2020-08-22 16:57:13,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecb12c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:13, skipping insertion in model container [2020-08-22 16:57:13,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:13" (3/3) ... [2020-08-22 16:57:13,275 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2020-08-22 16:57:13,287 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:57:13,296 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:57:13,314 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:57:13,350 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:57:13,351 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:57:13,351 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:57:13,351 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:57:13,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:57:13,352 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:57:13,352 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:57:13,352 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:57:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-22 16:57:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:57:13,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:13,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:13,383 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:13,390 INFO L82 PathProgramCache]: Analyzing trace with hash -564387615, now seen corresponding path program 1 times [2020-08-22 16:57:13,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:13,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659612377] [2020-08-22 16:57:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:13,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659612377] [2020-08-22 16:57:13,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:13,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:57:13,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537779975] [2020-08-22 16:57:13,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:57:13,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:13,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:57:13,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:57:13,616 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-08-22 16:57:13,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:13,694 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-08-22 16:57:13,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:57:13,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-08-22 16:57:13,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:13,705 INFO L225 Difference]: With dead ends: 32 [2020-08-22 16:57:13,706 INFO L226 Difference]: Without dead ends: 13 [2020-08-22 16:57:13,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:57:13,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-08-22 16:57:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-08-22 16:57:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-08-22 16:57:13,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-08-22 16:57:13,744 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-08-22 16:57:13,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:13,744 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-08-22 16:57:13,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:57:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-08-22 16:57:13,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 16:57:13,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:13,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:13,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:57:13,747 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:13,748 INFO L82 PathProgramCache]: Analyzing trace with hash -538271495, now seen corresponding path program 1 times [2020-08-22 16:57:13,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:13,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052103921] [2020-08-22 16:57:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:57:13,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:57:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:57:13,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:57:13,813 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:57:13,813 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:57:13,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:57:13,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:57:13 BoogieIcfgContainer [2020-08-22 16:57:13,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:57:13,848 INFO L168 Benchmark]: Toolchain (without parser) took 1274.67 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 103.1 MB in the beginning and 141.5 MB in the end (delta: -38.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,849 INFO L168 Benchmark]: CDTParser took 1.18 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.19 ms. Allocated memory is still 148.4 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,851 INFO L168 Benchmark]: Boogie Preprocessor took 121.45 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 93.0 MB in the beginning and 182.5 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,852 INFO L168 Benchmark]: RCFGBuilder took 265.06 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 168.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,853 INFO L168 Benchmark]: TraceAbstraction took 577.02 ms. Allocated memory is still 204.5 MB. Free memory was 168.3 MB in the beginning and 141.5 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:13,857 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.19 ms. Allocated memory is still 148.4 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.45 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 93.0 MB in the beginning and 182.5 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.06 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 168.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 577.02 ms. Allocated memory is still 204.5 MB. Free memory was 168.3 MB in the beginning and 141.5 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); [L13] int x=__VERIFIER_nondet_int(); [L14] int *p = &x; VAL [p={2:0}, x={2:0}] [L16] EXPR \read(x) VAL [\read(x)=100, p={2:0}, x={2:0}] [L16] COND FALSE !(x<100) [L19] CALL __VERIFIER_assert(0) 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, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 5 SDslu, 4 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...