/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/trex02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:25:20,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:25:20,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:25:20,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:25:20,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:25:20,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:25:20,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:25:20,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:25:20,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:25:20,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:25:20,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:25:20,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:25:20,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:25:20,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:25:20,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:25:20,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:25:20,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:25:20,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:25:20,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:25:20,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:25:20,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:25:20,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:25:20,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:25:20,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:25:20,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:25:20,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:25:20,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:25:20,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:25:20,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:25:20,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:25:20,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:25:20,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:25:20,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:25:20,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:25:20,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:25:20,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:25:20,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:25:20,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:25:20,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:25:20,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:25:20,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:25:20,749 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 [2019-11-06 21:25:20,775 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:25:20,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:25:20,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:25:20,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:25:20,778 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:25:20,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:25:20,778 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:25:20,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:25:20,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:25:20,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:25:20,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:25:20,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:25:20,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:25:20,781 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:25:20,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:25:20,781 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:25:20,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:25:20,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:25:20,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:25:20,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:25:20,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:25:20,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:25:20,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:25:20,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:25:20,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:25:20,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:25:20,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:25:20,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:25:20,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:25:21,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:25:21,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:25:21,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:25:21,076 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:25:21,076 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:25:21,077 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-1.c [2019-11-06 21:25:21,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea035108e/056e913bd0584b64ad42be08ef68752b/FLAGb0ac5ea91 [2019-11-06 21:25:21,575 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:25:21,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c [2019-11-06 21:25:21,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea035108e/056e913bd0584b64ad42be08ef68752b/FLAGb0ac5ea91 [2019-11-06 21:25:22,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea035108e/056e913bd0584b64ad42be08ef68752b [2019-11-06 21:25:22,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:25:22,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:25:22,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:25:22,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:25:22,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:25:22,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:25:22" (1/1) ... [2019-11-06 21:25:22,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510f79ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22, skipping insertion in model container [2019-11-06 21:25:22,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:25:22" (1/1) ... [2019-11-06 21:25:22,074 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:25:22,090 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:25:22,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:25:22,259 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:25:22,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:25:22,290 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:25:22,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22 WrapperNode [2019-11-06 21:25:22,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:25:22,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:25:22,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:25:22,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:25:22,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22" (1/1) ... [2019-11-06 21:25:22,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22" (1/1) ... [2019-11-06 21:25:22,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22" (1/1) ... [2019-11-06 21:25:22,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22" (1/1) ... [2019-11-06 21:25:22,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22" (1/1) ... [2019-11-06 21:25:22,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22" (1/1) ... [2019-11-06 21:25:22,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22" (1/1) ... [2019-11-06 21:25:22,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:25:22,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:25:22,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:25:22,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:25:22,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22" (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 [2019-11-06 21:25:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:25:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:25:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:25:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-06 21:25:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:25:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:25:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:25:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 21:25:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:25:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-06 21:25:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:25:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:25:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:25:22,678 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:25:22,679 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 21:25:22,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:25:22 BoogieIcfgContainer [2019-11-06 21:25:22,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:25:22,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:25:22,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:25:22,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:25:22,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:25:22" (1/3) ... [2019-11-06 21:25:22,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d24cf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:25:22, skipping insertion in model container [2019-11-06 21:25:22,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:22" (2/3) ... [2019-11-06 21:25:22,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d24cf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:25:22, skipping insertion in model container [2019-11-06 21:25:22,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:25:22" (3/3) ... [2019-11-06 21:25:22,706 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2019-11-06 21:25:22,718 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:25:22,729 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:25:22,756 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:25:22,783 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:25:22,783 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:25:22,783 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:25:22,783 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:25:22,783 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:25:22,784 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:25:22,784 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:25:22,785 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:25:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-06 21:25:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-06 21:25:22,808 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:22,808 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:22,810 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:22,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1873481772, now seen corresponding path program 1 times [2019-11-06 21:25:22,823 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:22,823 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237963356] [2019-11-06 21:25:22,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:22,957 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237963356] [2019-11-06 21:25:22,958 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:25:22,958 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 21:25:22,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249960750] [2019-11-06 21:25:22,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:25:22,969 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:22,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:25:22,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:25:22,989 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-11-06 21:25:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:23,085 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-11-06 21:25:23,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:25:23,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-06 21:25:23,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:23,106 INFO L225 Difference]: With dead ends: 35 [2019-11-06 21:25:23,107 INFO L226 Difference]: Without dead ends: 18 [2019-11-06 21:25:23,115 INFO L630 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 [2019-11-06 21:25:23,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-06 21:25:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-06 21:25:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-06 21:25:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-06 21:25:23,179 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2019-11-06 21:25:23,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:23,181 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-06 21:25:23,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:25:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-06 21:25:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-06 21:25:23,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:23,186 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:23,187 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:23,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:23,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1862399520, now seen corresponding path program 1 times [2019-11-06 21:25:23,188 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:23,188 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914563064] [2019-11-06 21:25:23,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:23,331 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914563064] [2019-11-06 21:25:23,331 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:25:23,331 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:25:23,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173638555] [2019-11-06 21:25:23,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:25:23,333 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:23,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:25:23,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:25:23,334 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 6 states. [2019-11-06 21:25:23,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:23,415 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-11-06 21:25:23,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:25:23,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-06 21:25:23,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:23,417 INFO L225 Difference]: With dead ends: 18 [2019-11-06 21:25:23,417 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:25:23,419 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:25:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:25:23,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:25:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:25:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:25:23,420 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-06 21:25:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:23,420 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:25:23,421 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:25:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:25:23,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:25:23,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:25:23,492 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:25:23,492 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2019-11-06 21:25:23,492 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:25:23,493 INFO L443 ceAbstractionStarter]: For program point fooEXIT(lines 15 17) no Hoare annotation was computed. [2019-11-06 21:25:23,493 INFO L439 ceAbstractionStarter]: At program point fooENTRY(lines 15 17) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2019-11-06 21:25:23,493 INFO L443 ceAbstractionStarter]: For program point fooFINAL(lines 15 17) no Hoare annotation was computed. [2019-11-06 21:25:23,493 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:25:23,493 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2019-11-06 21:25:23,494 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:25:23,494 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:25:23,494 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 19 27) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (= ~x~0 |old(~x~0)|)) [2019-11-06 21:25:23,494 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 19 27) no Hoare annotation was computed. [2019-11-06 21:25:23,495 INFO L446 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: true [2019-11-06 21:25:23,495 INFO L443 ceAbstractionStarter]: For program point L23(lines 23 24) no Hoare annotation was computed. [2019-11-06 21:25:23,495 INFO L446 ceAbstractionStarter]: At program point L24-1(lines 21 25) the Hoare annotation is: true [2019-11-06 21:25:23,495 INFO L446 ceAbstractionStarter]: At program point L23-1(line 23) the Hoare annotation is: true [2019-11-06 21:25:23,495 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 25) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (<= ~x~0 0)) [2019-11-06 21:25:23,496 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 19 27) no Hoare annotation was computed. [2019-11-06 21:25:23,496 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 21:25:23,497 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 21:25:23,497 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:25:23,497 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 21:25:23,497 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 21:25:23,498 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:25:23,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:25:23 BoogieIcfgContainer [2019-11-06 21:25:23,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:25:23,518 INFO L168 Benchmark]: Toolchain (without parser) took 1477.57 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 126.0 MB in the end (delta: -23.7 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:23,520 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:25:23,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.20 ms. Allocated memory is still 137.9 MB. Free memory was 102.1 MB in the beginning and 92.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:23,530 INFO L168 Benchmark]: Boogie Preprocessor took 112.39 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 180.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:23,532 INFO L168 Benchmark]: RCFGBuilder took 276.49 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 168.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:23,532 INFO L168 Benchmark]: TraceAbstraction took 826.68 ms. Allocated memory is still 201.9 MB. Free memory was 167.8 MB in the beginning and 126.0 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:23,540 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.20 ms. Allocated memory is still 137.9 MB. Free memory was 102.1 MB in the beginning and 92.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.39 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 180.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 276.49 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 168.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 826.68 ms. Allocated memory is still 201.9 MB. Free memory was 167.8 MB in the beginning and 126.0 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 12 SDslu, 55 SDs, 0 SdLazy, 20 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 30 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...