/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:40:13,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:40:13,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:40:13,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:40:13,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:40:13,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:40:13,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:40:13,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:40:13,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:40:13,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:40:13,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:40:13,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:40:13,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:40:13,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:40:13,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:40:13,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:40:13,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:40:13,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:40:13,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:40:13,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:40:13,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:40:13,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:40:13,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:40:13,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:40:13,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:40:13,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:40:13,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:40:13,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:40:13,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:40:13,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 23:40:13,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 23:40:13,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 23:40:13,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 23:40:13,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 23:40:13,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 23:40:13,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 23:40:13,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 23:40:13,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 23:40:13,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:40:13,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:40:13,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:40:13,252 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 [2020-07-19 23:40:13,275 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:40:13,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:40:13,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:40:13,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:40:13,279 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:40:13,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:40:13,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:40:13,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:40:13,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:40:13,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:40:13,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:40:13,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:40:13,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:40:13,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:40:13,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:40:13,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:40:13,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:40:13,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:40:13,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:40:13,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:40:13,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:40:13,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:40:13,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:40:13,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:40:13,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:40:13,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:40:13,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:40:13,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:40:13,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:40:13,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:40:13,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:40:13,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:40:13,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:40:13,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:40:13,652 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:40:13,653 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2020-07-19 23:40:13,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc4b9a04/3fa8851aacfe41248ba8a53f52b08754/FLAG4f72a4cfb [2020-07-19 23:40:14,314 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:40:14,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-1.c [2020-07-19 23:40:14,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc4b9a04/3fa8851aacfe41248ba8a53f52b08754/FLAG4f72a4cfb [2020-07-19 23:40:14,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc4b9a04/3fa8851aacfe41248ba8a53f52b08754 [2020-07-19 23:40:14,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:40:14,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:40:14,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:40:14,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:40:14,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:40:14,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:40:14" (1/1) ... [2020-07-19 23:40:14,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396dbc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:14, skipping insertion in model container [2020-07-19 23:40:14,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:40:14" (1/1) ... [2020-07-19 23:40:14,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:40:14,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:40:15,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:40:15,062 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:40:15,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:40:15,121 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:40:15,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:15 WrapperNode [2020-07-19 23:40:15,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:40:15,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:40:15,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:40:15,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:40:15,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:15" (1/1) ... [2020-07-19 23:40:15,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:15" (1/1) ... [2020-07-19 23:40:15,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:15" (1/1) ... [2020-07-19 23:40:15,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:15" (1/1) ... [2020-07-19 23:40:15,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:15" (1/1) ... [2020-07-19 23:40:15,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:15" (1/1) ... [2020-07-19 23:40:15,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:15" (1/1) ... [2020-07-19 23:40:15,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:40:15,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:40:15,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:40:15,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:40:15,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:15" (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 [2020-07-19 23:40:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:40:15,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:40:15,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:40:15,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:40:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:40:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:40:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:40:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-19 23:40:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:40:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:40:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:40:15,702 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:40:15,702 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:40:15,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:40:15 BoogieIcfgContainer [2020-07-19 23:40:15,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:40:15,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:40:15,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:40:15,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:40:15,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:40:14" (1/3) ... [2020-07-19 23:40:15,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c3f7d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:40:15, skipping insertion in model container [2020-07-19 23:40:15,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:15" (2/3) ... [2020-07-19 23:40:15,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c3f7d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:40:15, skipping insertion in model container [2020-07-19 23:40:15,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:40:15" (3/3) ... [2020-07-19 23:40:15,719 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2020-07-19 23:40:15,741 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:40:15,760 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:40:15,818 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:40:15,902 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:40:15,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:40:15,903 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:40:15,909 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:40:15,909 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:40:15,909 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:40:15,910 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:40:15,910 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:40:15,936 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-19 23:40:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 23:40:15,946 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:40:15,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:40:15,947 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:40:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:40:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-07-19 23:40:15,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:40:15,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191268556] [2020-07-19 23:40:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5073cae1 [2020-07-19 23:40:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:40:16,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191268556] [2020-07-19 23:40:16,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:40:16,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-19 23:40:16,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569070452] [2020-07-19 23:40:16,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 23:40:16,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:40:16,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 23:40:16,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 23:40:16,159 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-19 23:40:16,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:40:16,184 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-19 23:40:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 23:40:16,186 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-19 23:40:16,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:40:16,199 INFO L225 Difference]: With dead ends: 31 [2020-07-19 23:40:16,199 INFO L226 Difference]: Without dead ends: 12 [2020-07-19 23:40:16,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 23:40:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-19 23:40:16,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-19 23:40:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-19 23:40:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-07-19 23:40:16,254 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2020-07-19 23:40:16,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:40:16,254 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-07-19 23:40:16,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 23:40:16,255 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-19 23:40:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 23:40:16,255 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:40:16,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:40:16,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:40:16,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:40:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:40:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2020-07-19 23:40:16,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:40:16,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407970870] [2020-07-19 23:40:16,258 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5073cae1 [2020-07-19 23:40:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:40:16,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:40:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:40:16,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:40:16,316 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:40:16,316 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:40:16,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:40:16,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:40:16 BoogieIcfgContainer [2020-07-19 23:40:16,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:40:16,355 INFO L168 Benchmark]: Toolchain (without parser) took 1726.80 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 101.4 MB in the beginning and 146.7 MB in the end (delta: -45.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:16,356 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 23:40:16,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.02 ms. Allocated memory is still 143.7 MB. Free memory was 101.0 MB in the beginning and 91.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:16,360 INFO L168 Benchmark]: Boogie Preprocessor took 182.45 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 91.6 MB in the beginning and 180.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:16,361 INFO L168 Benchmark]: RCFGBuilder took 404.53 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 168.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:16,363 INFO L168 Benchmark]: TraceAbstraction took 637.33 ms. Allocated memory is still 202.4 MB. Free memory was 168.2 MB in the beginning and 146.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:16,369 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 494.02 ms. Allocated memory is still 143.7 MB. Free memory was 101.0 MB in the beginning and 91.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 182.45 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 91.6 MB in the beginning and 180.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.53 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 168.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 637.33 ms. Allocated memory is still 202.4 MB. Free memory was 168.2 MB in the beginning and 146.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 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: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100