/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:59:01,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:59:01,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:59:01,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:59:01,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:59:01,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:59:01,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:59:01,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:59:01,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:59:01,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:59:01,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:59:01,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:59:01,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:59:01,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:59:01,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:59:01,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:59:01,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:59:01,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:59:01,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:59:01,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:59:01,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:59:01,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:59:01,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:59:01,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:59:01,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:59:01,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:59:01,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:59:01,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:59:01,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:59:01,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:59:01,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:59:01,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:59:01,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:59:01,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:59:01,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:59:01,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:59:01,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:59:01,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:59:01,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:59:01,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:59:01,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:59:01,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:59:01,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:59:01,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:59:01,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:59:01,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:59:01,473 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:59:01,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:59:01,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:59:01,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:59:01,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:59:01,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:59:01,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:59:01,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:59:01,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:59:01,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:59:01,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:59:01,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:59:01,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:59:01,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:59:01,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:59:01,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:59:01,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:59:01,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:59:01,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:59:01,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:59:01,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:59:01,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:59:01,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:59:01,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:59:01,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:59:01,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:59:01,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:59:01,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:59:01,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:59:01,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:59:01,934 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:59:01,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2020-10-27 01:59:02,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7dcafed7/c088e926cab44a7790cd62d5d2fe33af/FLAG1527c5592 [2020-10-27 01:59:02,672 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:59:02,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_02-1.c [2020-10-27 01:59:02,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7dcafed7/c088e926cab44a7790cd62d5d2fe33af/FLAG1527c5592 [2020-10-27 01:59:03,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7dcafed7/c088e926cab44a7790cd62d5d2fe33af [2020-10-27 01:59:03,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:59:03,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:59:03,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:59:03,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:59:03,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:59:03,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:59:03" (1/1) ... [2020-10-27 01:59:03,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e97308f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03, skipping insertion in model container [2020-10-27 01:59:03,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:59:03" (1/1) ... [2020-10-27 01:59:03,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:59:03,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:59:03,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:59:03,249 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:59:03,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:59:03,284 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:59:03,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03 WrapperNode [2020-10-27 01:59:03,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:59:03,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:59:03,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:59:03,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:59:03,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03" (1/1) ... [2020-10-27 01:59:03,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03" (1/1) ... [2020-10-27 01:59:03,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03" (1/1) ... [2020-10-27 01:59:03,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03" (1/1) ... [2020-10-27 01:59:03,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03" (1/1) ... [2020-10-27 01:59:03,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03" (1/1) ... [2020-10-27 01:59:03,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03" (1/1) ... [2020-10-27 01:59:03,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:59:03,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:59:03,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:59:03,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:59:03,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-27 01:59:03,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:59:03,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:59:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:59:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:59:03,402 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:59:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:59:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:59:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:59:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:59:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:59:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:59:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 01:59:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:59:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:59:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:59:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:59:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:59:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:59:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:59:03,641 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:59:03,641 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:59:03,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:59:03 BoogieIcfgContainer [2020-10-27 01:59:03,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:59:03,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:59:03,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:59:03,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:59:03,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:59:03" (1/3) ... [2020-10-27 01:59:03,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e50370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:59:03, skipping insertion in model container [2020-10-27 01:59:03,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:03" (2/3) ... [2020-10-27 01:59:03,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e50370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:59:03, skipping insertion in model container [2020-10-27 01:59:03,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:59:03" (3/3) ... [2020-10-27 01:59:03,653 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2020-10-27 01:59:03,666 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:59:03,670 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:59:03,685 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:59:03,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:59:03,716 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:59:03,716 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:59:03,717 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:59:03,747 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:59:03,747 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:59:03,747 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:59:03,748 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:59:03,798 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-27 01:59:03,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 01:59:03,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:03,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:03,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:03,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:03,813 INFO L82 PathProgramCache]: Analyzing trace with hash 346045792, now seen corresponding path program 1 times [2020-10-27 01:59:03,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:03,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072464836] [2020-10-27 01:59:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:04,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:04,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:59:04,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 01:59:04,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:59:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 01:59:04,461 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-27 01:59:04,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:04,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:04,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:59:04,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:59:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:59:04,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072464836] [2020-10-27 01:59:04,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:04,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 01:59:04,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227397548] [2020-10-27 01:59:04,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 01:59:04,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:04,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 01:59:04,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 01:59:04,596 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-27 01:59:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:04,701 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-27 01:59:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:59:04,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-27 01:59:04,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:04,718 INFO L225 Difference]: With dead ends: 37 [2020-10-27 01:59:04,718 INFO L226 Difference]: Without dead ends: 14 [2020-10-27 01:59:04,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 01:59:04,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-27 01:59:04,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-27 01:59:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-27 01:59:04,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-10-27 01:59:04,787 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2020-10-27 01:59:04,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:04,788 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-10-27 01:59:04,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 01:59:04,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-10-27 01:59:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 01:59:04,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:04,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:59:04,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:59:04,791 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:04,792 INFO L82 PathProgramCache]: Analyzing trace with hash 59754282, now seen corresponding path program 1 times [2020-10-27 01:59:04,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:04,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193874055] [2020-10-27 01:59:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:59:04,859 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:59:04,859 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:59:04,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:59:04,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:59:04 BoogieIcfgContainer [2020-10-27 01:59:04,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:59:04,889 INFO L168 Benchmark]: Toolchain (without parser) took 1863.50 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 101.5 MB in the beginning and 103.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:59:04,890 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:59:04,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.91 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 91.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:59:04,895 INFO L168 Benchmark]: Boogie Preprocessor took 37.54 ms. Allocated memory is still 125.8 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:59:04,897 INFO L168 Benchmark]: RCFGBuilder took 318.82 ms. Allocated memory is still 125.8 MB. Free memory was 90.2 MB in the beginning and 77.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:59:04,899 INFO L168 Benchmark]: TraceAbstraction took 1239.40 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 76.7 MB in the beginning and 103.3 MB in the end (delta: -26.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:59:04,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.91 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 91.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.54 ms. Allocated memory is still 125.8 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 318.82 ms. Allocated memory is still 125.8 MB. Free memory was 90.2 MB in the beginning and 77.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1239.40 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 76.7 MB in the beginning and 103.3 MB in the end (delta: -26.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] int x=__VERIFIER_nondet_int(); [L17] int y=__VERIFIER_nondet_int(); [L18] int z=__VERIFIER_nondet_int(); [L20] COND FALSE !(x<100 && 100