/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:20:23,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:20:23,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:20:23,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:20:23,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:20:23,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:20:23,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:20:23,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:20:23,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:20:23,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:20:23,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:20:23,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:20:23,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:20:23,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:20:23,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:20:23,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:20:23,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:20:23,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:20:23,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:20:23,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:20:23,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:20:23,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:20:23,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:20:23,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:20:23,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 20:20:23,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 20:20:23,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 20:20:23,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 20:20:23,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 20:20:23,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 20:20:23,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 20:20:23,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 20:20:23,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 20:20:23,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 20:20:23,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 20:20:23,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 20:20:23,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 20:20:23,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 20:20:23,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:20:23,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:20:23,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:20:23,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 20:20:24,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:20:24,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:20:24,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:20:24,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:20:24,037 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:20:24,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:20:24,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:20:24,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:20:24,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:20:24,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:20:24,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:20:24,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:20:24,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:20:24,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:20:24,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:20:24,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:20:24,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:20:24,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:20:24,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:20:24,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:20:24,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:20:24,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:20:24,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:20:24,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:20:24,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:20:24,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:20:24,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:20:24,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:20:24,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:20:24,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 20:20:24,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:20:24,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:20:24,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:20:24,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:20:24,433 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:20:24,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2020-07-21 20:20:24,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf3d14310/a4a3fd91ef6d4bff8fa0d616278b6439/FLAG00ff1304a [2020-07-21 20:20:24,975 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:20:24,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-1.c [2020-07-21 20:20:24,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf3d14310/a4a3fd91ef6d4bff8fa0d616278b6439/FLAG00ff1304a [2020-07-21 20:20:25,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf3d14310/a4a3fd91ef6d4bff8fa0d616278b6439 [2020-07-21 20:20:25,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:20:25,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:20:25,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:20:25,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:20:25,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:20:25,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:20:25" (1/1) ... [2020-07-21 20:20:25,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58129462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25, skipping insertion in model container [2020-07-21 20:20:25,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:20:25" (1/1) ... [2020-07-21 20:20:25,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:20:25,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:20:25,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:20:25,724 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:20:25,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:20:25,771 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:20:25,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25 WrapperNode [2020-07-21 20:20:25,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:20:25,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:20:25,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:20:25,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:20:25,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25" (1/1) ... [2020-07-21 20:20:25,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25" (1/1) ... [2020-07-21 20:20:25,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25" (1/1) ... [2020-07-21 20:20:25,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25" (1/1) ... [2020-07-21 20:20:25,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25" (1/1) ... [2020-07-21 20:20:25,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25" (1/1) ... [2020-07-21 20:20:25,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25" (1/1) ... [2020-07-21 20:20:25,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:20:25,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:20:25,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:20:25,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:20:25,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:20:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:20:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:20:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 20:20:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:20:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:20:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 20:20:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:20:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 20:20:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:20:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:20:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:20:26,223 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:20:26,224 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:20:26,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:20:26 BoogieIcfgContainer [2020-07-21 20:20:26,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:20:26,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:20:26,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:20:26,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:20:26,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:20:25" (1/3) ... [2020-07-21 20:20:26,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a8bd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:20:26, skipping insertion in model container [2020-07-21 20:20:26,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:25" (2/3) ... [2020-07-21 20:20:26,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a8bd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:20:26, skipping insertion in model container [2020-07-21 20:20:26,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:20:26" (3/3) ... [2020-07-21 20:20:26,240 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2020-07-21 20:20:26,253 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:20:26,261 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:20:26,277 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:20:26,305 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:20:26,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:20:26,306 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:20:26,306 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:20:26,306 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:20:26,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:20:26,307 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:20:26,307 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:20:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-21 20:20:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 20:20:26,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:20:26,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:20:26,336 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:20:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:20:26,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-07-21 20:20:26,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:20:26,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795465066] [2020-07-21 20:20:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:20:26,436 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:20:26,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:20:26,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 20:20:26,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:20:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:20:26,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:20:26,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795465066] [2020-07-21 20:20:26,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:20:26,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 20:20:26,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179788132] [2020-07-21 20:20:26,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 20:20:26,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:20:26,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 20:20:26,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 20:20:26,537 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-21 20:20:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:20:26,577 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-21 20:20:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 20:20:26,580 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 20:20:26,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:20:26,590 INFO L225 Difference]: With dead ends: 31 [2020-07-21 20:20:26,591 INFO L226 Difference]: Without dead ends: 12 [2020-07-21 20:20:26,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 20:20:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-21 20:20:26,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-21 20:20:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-21 20:20:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-07-21 20:20:26,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2020-07-21 20:20:26,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:20:26,644 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-07-21 20:20:26,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 20:20:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-21 20:20:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 20:20:26,645 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:20:26,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:20:26,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:20:26,860 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:20:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:20:26,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2020-07-21 20:20:26,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:20:26,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063640831] [2020-07-21 20:20:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:20:26,921 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:20:26,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 20:20:26,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:20:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 20:20:26,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:20:26,954 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 20:20:26,954 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 20:20:27,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:20:27,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:20:27 BoogieIcfgContainer [2020-07-21 20:20:27,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:20:27,199 INFO L168 Benchmark]: Toolchain (without parser) took 1819.56 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 104.1 MB in the beginning and 143.2 MB in the end (delta: -39.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-07-21 20:20:27,201 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 20:20:27,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.19 ms. Allocated memory is still 138.9 MB. Free memory was 103.9 MB in the beginning and 94.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-21 20:20:27,206 INFO L168 Benchmark]: Boogie Preprocessor took 59.04 ms. Allocated memory is still 138.9 MB. Free memory was 94.3 MB in the beginning and 93.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-21 20:20:27,207 INFO L168 Benchmark]: RCFGBuilder took 395.30 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 170.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-21 20:20:27,209 INFO L168 Benchmark]: TraceAbstraction took 962.88 ms. Allocated memory is still 202.9 MB. Free memory was 169.4 MB in the beginning and 143.2 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:20:27,221 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.19 ms. Allocated memory is still 138.9 MB. Free memory was 103.9 MB in the beginning and 94.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.04 ms. Allocated memory is still 138.9 MB. Free memory was 94.3 MB in the beginning and 93.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.30 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 170.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 962.88 ms. Allocated memory is still 202.9 MB. Free memory was 169.4 MB in the beginning and 143.2 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 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