/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.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 SingleStatement --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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:57:48,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:57:48,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:57:48,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:57:48,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:57:48,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:57:48,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:57:48,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:57:48,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:57:48,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:57:48,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:57:48,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:57:48,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:57:48,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:57:48,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:57:48,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:57:48,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:57:48,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:57:48,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:57:48,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:57:48,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:57:48,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:57:48,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:57:48,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:57:48,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:57:48,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:57:48,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:57:48,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:57:48,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:57:48,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:57:48,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:57:48,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:57:48,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:57:48,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:57:48,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:57:48,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:57:48,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:57:48,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:57:48,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:57:48,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:57:48,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:57:48,278 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 [2020-09-25 00:57:48,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:57:48,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:57:48,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:57:48,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:57:48,323 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:57:48,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:57:48,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:57:48,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:57:48,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:57:48,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:57:48,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:57:48,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:57:48,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:57:48,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:57:48,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:57:48,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:57:48,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:57:48,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:57:48,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:57:48,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:57:48,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:57:48,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:57:48,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:57:48,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:57:48,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:57:48,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:57:48,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:57:48,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:57:48,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:57:48,335 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 -> 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 -> SingleStatement 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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=true; [2020-09-25 00:57:48,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:57:48,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:57:48,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:57:48,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:57:48,753 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:57:48,754 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 00:57:48,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6fe38628/ccbe0b13608e440ea4163d0f50a33bad/FLAG87c792eea [2020-09-25 00:57:49,375 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:57:49,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 00:57:49,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6fe38628/ccbe0b13608e440ea4163d0f50a33bad/FLAG87c792eea [2020-09-25 00:57:49,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6fe38628/ccbe0b13608e440ea4163d0f50a33bad [2020-09-25 00:57:49,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:57:49,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:57:49,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:57:49,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:57:49,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:57:49,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:57:49" (1/1) ... [2020-09-25 00:57:49,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6708ede7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:49, skipping insertion in model container [2020-09-25 00:57:49,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:57:49" (1/1) ... [2020-09-25 00:57:49,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:57:49,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:57:49,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:57:50,001 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:57:50,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:57:50,046 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:57:50,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:50 WrapperNode [2020-09-25 00:57:50,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:57:50,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:57:50,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:57:50,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:57:50,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:50" (1/1) ... [2020-09-25 00:57:50,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:50" (1/1) ... [2020-09-25 00:57:50,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:50" (1/1) ... [2020-09-25 00:57:50,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:50" (1/1) ... [2020-09-25 00:57:50,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:50" (1/1) ... [2020-09-25 00:57:50,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:50" (1/1) ... [2020-09-25 00:57:50,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:50" (1/1) ... [2020-09-25 00:57:50,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:57:50,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:57:50,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:57:50,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:57:50,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:50" (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 [2020-09-25 00:57:50,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:57:50,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:57:50,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 00:57:50,273 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 00:57:50,273 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 00:57:50,273 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-25 00:57:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-25 00:57:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-25 00:57:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-25 00:57:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-25 00:57:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-25 00:57:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:57:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:57:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 00:57:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:57:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 00:57:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 00:57:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-25 00:57:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-25 00:57:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-25 00:57:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-25 00:57:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-25 00:57:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-25 00:57:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:57:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:57:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:57:50,659 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:57:50,660 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 00:57:50,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:57:50 BoogieIcfgContainer [2020-09-25 00:57:50,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:57:50,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:57:50,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:57:50,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:57:50,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:57:49" (1/3) ... [2020-09-25 00:57:50,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebde29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:57:50, skipping insertion in model container [2020-09-25 00:57:50,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:50" (2/3) ... [2020-09-25 00:57:50,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebde29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:57:50, skipping insertion in model container [2020-09-25 00:57:50,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:57:50" (3/3) ... [2020-09-25 00:57:50,675 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-25 00:57:50,684 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:57:50,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:57:50,715 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:57:50,746 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:57:50,746 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:57:50,746 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:57:50,746 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:57:50,746 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:57:50,747 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:57:50,747 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:57:50,747 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:57:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 00:57:50,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 00:57:50,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:50,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:50,782 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:50,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:50,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-25 00:57:50,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:50,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881223290] [2020-09-25 00:57:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:50,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:51,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:51,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:57:51,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:57:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 00:57:51,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:57:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 00:57:51,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:51,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:51,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:51,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:51,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:51,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:57:51,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:51,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:51,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:57:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:51,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:51,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:51,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:57:51,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:51,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881223290] [2020-09-25 00:57:51,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:51,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:57:51,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18040134] [2020-09-25 00:57:51,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:57:51,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:51,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:57:51,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:57:51,300 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-09-25 00:57:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:51,497 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2020-09-25 00:57:51,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:57:51,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-25 00:57:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:51,515 INFO L225 Difference]: With dead ends: 199 [2020-09-25 00:57:51,516 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 00:57:51,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:57:51,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 00:57:51,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2020-09-25 00:57:51,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 00:57:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-09-25 00:57:51,586 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 19 [2020-09-25 00:57:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:51,587 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-09-25 00:57:51,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:57:51,587 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-09-25 00:57:51,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 00:57:51,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:51,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:51,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:57:51,589 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:51,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:51,589 INFO L82 PathProgramCache]: Analyzing trace with hash 837576233, now seen corresponding path program 1 times [2020-09-25 00:57:51,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:51,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585358394] [2020-09-25 00:57:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:51,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:51,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:57:51,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:51,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 00:57:51,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:57:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 00:57:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:57:51,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:51,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:51,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:51,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:51,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:51,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:57:51,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:57:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 00:57:51,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:51,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:57:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:51,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:51,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:51,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:57:51,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:57:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:57:51,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:51,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585358394] [2020-09-25 00:57:51,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:51,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:57:51,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375164898] [2020-09-25 00:57:51,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:57:51,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:51,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:57:51,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:57:51,887 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 5 states. [2020-09-25 00:57:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:52,148 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions. [2020-09-25 00:57:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:57:52,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-25 00:57:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:52,152 INFO L225 Difference]: With dead ends: 171 [2020-09-25 00:57:52,152 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 00:57:52,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:57:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 00:57:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 00:57:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 00:57:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-25 00:57:52,180 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21 [2020-09-25 00:57:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:52,181 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-25 00:57:52,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:57:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-25 00:57:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 00:57:52,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:52,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:52,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:57:52,184 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:52,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:52,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-25 00:57:52,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:52,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021215618] [2020-09-25 00:57:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:52,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:52,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:57:52,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:57:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-25 00:57:52,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:57:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 00:57:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:57:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:52,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:52,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:52,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:52,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:52,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:52,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:57:52,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:52,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:57:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:52,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:52,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:52,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:57:52,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:52,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:52,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:52,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:52,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:52,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 00:57:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:52,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:52,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:52,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:52,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:57:52,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:57:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 00:57:52,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:52,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021215618] [2020-09-25 00:57:52,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:52,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 00:57:52,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496044812] [2020-09-25 00:57:52,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:57:52,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:52,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:57:52,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:57:52,750 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-25 00:57:52,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:52,943 INFO L93 Difference]: Finished difference Result 279 states and 339 transitions. [2020-09-25 00:57:52,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:57:52,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 00:57:52,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:52,946 INFO L225 Difference]: With dead ends: 279 [2020-09-25 00:57:52,947 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 00:57:52,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:57:52,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 00:57:52,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 92. [2020-09-25 00:57:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 00:57:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-09-25 00:57:52,963 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 38 [2020-09-25 00:57:52,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:52,963 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-09-25 00:57:52,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:57:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-09-25 00:57:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 00:57:52,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:52,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:52,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:57:52,966 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:52,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:52,967 INFO L82 PathProgramCache]: Analyzing trace with hash -624757564, now seen corresponding path program 1 times [2020-09-25 00:57:52,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:52,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171564894] [2020-09-25 00:57:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:53,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:57:53,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 00:57:53,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:57:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 00:57:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:57:53,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:53,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:53,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:53,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:53,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:57:53,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:53,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:57:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:53,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:53,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:53,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:57:53,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:57:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:57:53,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:53,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 00:57:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:53,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:53,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:53,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:53,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:57:53,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:57:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:53,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171564894] [2020-09-25 00:57:53,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:53,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 00:57:53,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914119443] [2020-09-25 00:57:53,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:57:53,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:53,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:57:53,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:57:53,115 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 6 states. [2020-09-25 00:57:53,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:53,360 INFO L93 Difference]: Finished difference Result 251 states and 305 transitions. [2020-09-25 00:57:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:57:53,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 00:57:53,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:53,364 INFO L225 Difference]: With dead ends: 251 [2020-09-25 00:57:53,364 INFO L226 Difference]: Without dead ends: 173 [2020-09-25 00:57:53,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:57:53,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-25 00:57:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 112. [2020-09-25 00:57:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 00:57:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2020-09-25 00:57:53,379 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 38 [2020-09-25 00:57:53,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:53,383 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2020-09-25 00:57:53,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:57:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2020-09-25 00:57:53,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 00:57:53,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:53,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:53,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:57:53,390 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:53,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2144371133, now seen corresponding path program 1 times [2020-09-25 00:57:53,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:53,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186370508] [2020-09-25 00:57:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:53,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:53,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:53,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:53,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 00:57:53,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:57:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-25 00:57:53,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:57:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 00:57:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:57:53,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:53,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:53,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:53,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:53,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:53,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:57:53,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:53,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:53,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:57:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:53,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:53,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:53,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:53,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:57:53,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:53,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:53,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 00:57:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:53,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:53,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:57:53,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:57:53,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:57:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:57:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:53,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 00:57:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:53,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:53,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:53,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:53,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:53,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:57:53,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:57:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:53,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186370508] [2020-09-25 00:57:53,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:53,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:57:53,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060413076] [2020-09-25 00:57:53,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:57:53,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:53,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:57:53,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:57:53,843 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand 8 states. [2020-09-25 00:57:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:54,318 INFO L93 Difference]: Finished difference Result 311 states and 383 transitions. [2020-09-25 00:57:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:57:54,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 00:57:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:54,322 INFO L225 Difference]: With dead ends: 311 [2020-09-25 00:57:54,323 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 00:57:54,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:57:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 00:57:54,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 132. [2020-09-25 00:57:54,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-25 00:57:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-09-25 00:57:54,353 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 59 [2020-09-25 00:57:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:54,354 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-09-25 00:57:54,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:57:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-09-25 00:57:54,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 00:57:54,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:54,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:54,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:57:54,357 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:54,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:54,359 INFO L82 PathProgramCache]: Analyzing trace with hash -204784227, now seen corresponding path program 1 times [2020-09-25 00:57:54,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:54,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891382446] [2020-09-25 00:57:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:55,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:55,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 00:57:55,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:57:55,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-09-25 00:57:55,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:55,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:57:55,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 00:57:55,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 00:57:55,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:55,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:55,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:55,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:55,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:55,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:57:55,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:55,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:55,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:57:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:55,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:55,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:55,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:55,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:57:55,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:55,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 00:57:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:55,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:55,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:55,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:57:55,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:55,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:57:55,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:55,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:55,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 00:57:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:55,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:55,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:55,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:57:55,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:55,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:57:55,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:55,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:57:55,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:55,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 00:57:55,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:55,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 00:57:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:55,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:55,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:57:55,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:55,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:57:55,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:55,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:55,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:57:55,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:55,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 00:57:55,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891382446] [2020-09-25 00:57:55,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:55,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:57:55,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626940114] [2020-09-25 00:57:55,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:57:55,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:55,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:57:55,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:57:55,428 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 8 states. [2020-09-25 00:57:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:55,783 INFO L93 Difference]: Finished difference Result 411 states and 519 transitions. [2020-09-25 00:57:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:57:55,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-09-25 00:57:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:55,787 INFO L225 Difference]: With dead ends: 411 [2020-09-25 00:57:55,787 INFO L226 Difference]: Without dead ends: 293 [2020-09-25 00:57:55,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:57:55,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-25 00:57:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 152. [2020-09-25 00:57:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 00:57:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2020-09-25 00:57:55,801 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 183 transitions. Word has length 79 [2020-09-25 00:57:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:55,802 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 183 transitions. [2020-09-25 00:57:55,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:57:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 183 transitions. [2020-09-25 00:57:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 00:57:55,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:55,804 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:55,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:57:55,805 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:55,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-25 00:57:55,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:55,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880663628] [2020-09-25 00:57:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:57:55,831 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:57:55,832 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:57:55,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:57:55,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:57:55 BoogieIcfgContainer [2020-09-25 00:57:55,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:57:55,870 INFO L168 Benchmark]: Toolchain (without parser) took 6135.41 ms. Allocated memory was 141.6 MB in the beginning and 275.8 MB in the end (delta: 134.2 MB). Free memory was 104.2 MB in the beginning and 151.7 MB in the end (delta: -47.5 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:55,871 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:57:55,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.89 ms. Allocated memory is still 141.6 MB. Free memory was 103.6 MB in the beginning and 93.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:55,873 INFO L168 Benchmark]: Boogie Preprocessor took 125.25 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 183.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:55,873 INFO L168 Benchmark]: RCFGBuilder took 492.72 ms. Allocated memory is still 205.0 MB. Free memory was 183.1 MB in the beginning and 161.8 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:55,874 INFO L168 Benchmark]: TraceAbstraction took 5198.90 ms. Allocated memory was 205.0 MB in the beginning and 275.8 MB in the end (delta: 70.8 MB). Free memory was 161.1 MB in the beginning and 151.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:55,878 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 308.89 ms. Allocated memory is still 141.6 MB. Free memory was 103.6 MB in the beginning and 93.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.25 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 183.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.72 ms. Allocated memory is still 205.0 MB. Free memory was 183.1 MB in the beginning and 161.8 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5198.90 ms. Allocated memory was 205.0 MB in the beginning and 275.8 MB in the end (delta: 70.8 MB). Free memory was 161.1 MB in the beginning and 151.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L75] CALL my_init() [L69] open_called = 0 [L70] return 0; [L75] RET my_init() [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L82] CALL misc_open() [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() [L83] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L90] CALL misc_read() [L52] return 0; [L90] RET misc_read() [L91] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L98] CALL misc_llseek() [L48] return 0; [L98] RET misc_llseek() [L99] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L106] CALL misc_release() [L34] COND FALSE !(\read(open_called)) [L41] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L17] ldv_mutex = 2 [L41] RET mutex_lock() [L42] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L16] CALL __blast_assert() [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.0s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 569 SDtfs, 824 SDslu, 1281 SDs, 0 SdLazy, 795 SolverSat, 236 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 333 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 355 NumberOfCodeBlocks, 355 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 24338 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 31/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...