/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=BIGGEST --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/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:29:19,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:29:19,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:29:19,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:29:19,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:29:19,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:29:19,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:29:19,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:29:19,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:29:19,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:29:19,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:29:19,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:29:19,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:29:19,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:29:19,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:29:19,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:29:19,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:29:19,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:29:19,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:29:19,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:29:19,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:29:19,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:29:19,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:29:19,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:29:19,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:29:19,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:29:19,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:29:19,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:29:19,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:29:19,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:29:19,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:29:19,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:29:19,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:29:19,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:29:19,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:29:19,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:29:19,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:29:19,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:29:19,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:29:19,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:29:19,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:29:19,192 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 [2020-09-24 20:29:19,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:29:19,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:29:19,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:29:19,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:29:19,246 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:29:19,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:29:19,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:29:19,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:29:19,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:29:19,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:29:19,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:29:19,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:29:19,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:29:19,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:29:19,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:29:19,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:29:19,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:29:19,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:29:19,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:29:19,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:29:19,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:29:19,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:29:19,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:29:19,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:29:19,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:29:19,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:29:19,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:29:19,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:29:19,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:29:19,253 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:29:19,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:29:19,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:29:19,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:29:19,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:29:19,738 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:29:19,739 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-24 20:29:19,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db0e8f050/bc91ffa803434ae2a816e8130ebc007a/FLAG4de15b72d [2020-09-24 20:29:20,384 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:29:20,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-24 20:29:20,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db0e8f050/bc91ffa803434ae2a816e8130ebc007a/FLAG4de15b72d [2020-09-24 20:29:20,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db0e8f050/bc91ffa803434ae2a816e8130ebc007a [2020-09-24 20:29:20,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:29:20,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:29:20,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:20,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:29:20,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:29:20,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4241192c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:20, skipping insertion in model container [2020-09-24 20:29:20,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:20" (1/1) ... [2020-09-24 20:29:20,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:29:20,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:29:21,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:21,049 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:29:21,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:21,088 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:29:21,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:21 WrapperNode [2020-09-24 20:29:21,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:21,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:29:21,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:29:21,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:29:21,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:21" (1/1) ... [2020-09-24 20:29:21,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:21" (1/1) ... [2020-09-24 20:29:21,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:21" (1/1) ... [2020-09-24 20:29:21,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:21" (1/1) ... [2020-09-24 20:29:21,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:21" (1/1) ... [2020-09-24 20:29:21,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:21" (1/1) ... [2020-09-24 20:29:21,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:21" (1/1) ... [2020-09-24 20:29:21,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:29:21,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:29:21,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:29:21,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:29:21,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:21" (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 [2020-09-24 20:29:21,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:29:21,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:29:21,312 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 20:29:21,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 20:29:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:29:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:29:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:29:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:29:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:29:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:29:21,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:29:21,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:29:21,608 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:29:21,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:21 BoogieIcfgContainer [2020-09-24 20:29:21,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:29:21,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:29:21,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:29:21,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:29:21,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:29:20" (1/3) ... [2020-09-24 20:29:21,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb7058f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:21, skipping insertion in model container [2020-09-24 20:29:21,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:21" (2/3) ... [2020-09-24 20:29:21,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb7058f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:21, skipping insertion in model container [2020-09-24 20:29:21,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:21" (3/3) ... [2020-09-24 20:29:21,625 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-09-24 20:29:21,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:29:21,664 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:29:21,705 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:29:21,733 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:29:21,733 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:29:21,733 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:29:21,733 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:29:21,734 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:29:21,734 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:29:21,734 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:29:21,734 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:29:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-09-24 20:29:21,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:29:21,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:21,766 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] [2020-09-24 20:29:21,767 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:21,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:21,774 INFO L82 PathProgramCache]: Analyzing trace with hash 606292035, now seen corresponding path program 1 times [2020-09-24 20:29:21,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:21,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519355227] [2020-09-24 20:29:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:22,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:22,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 20:29:22,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 20:29:22,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 20:29:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:29:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:22,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:22,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:22,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:29:22,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:22,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:29:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:22,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:22,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:22,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 20:29:22,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 20:29:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:29:22,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519355227] [2020-09-24 20:29:22,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:22,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:29:22,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314160009] [2020-09-24 20:29:22,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:29:22,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:22,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:29:22,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:29:22,297 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-09-24 20:29:22,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:22,484 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-24 20:29:22,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:29:22,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-24 20:29:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:22,501 INFO L225 Difference]: With dead ends: 73 [2020-09-24 20:29:22,501 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 20:29:22,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:29:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 20:29:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-24 20:29:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 20:29:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-24 20:29:22,557 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-24 20:29:22,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:22,558 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-24 20:29:22,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:29:22,559 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-24 20:29:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:29:22,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:22,561 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] [2020-09-24 20:29:22,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:29:22,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:22,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:22,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1986388344, now seen corresponding path program 1 times [2020-09-24 20:29:22,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:22,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860265011] [2020-09-24 20:29:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:22,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:23,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:23,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:29:23,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:23,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-09-24 20:29:23,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:29:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:29:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:29:23,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:23,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:23,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:23,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:23,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:23,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:29:23,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:23,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 20:29:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:23,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:23,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:23,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:23,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:29:23,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 20:29:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:29:23,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860265011] [2020-09-24 20:29:23,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:23,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:29:23,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151575322] [2020-09-24 20:29:23,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:29:23,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:23,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:29:23,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:29:23,335 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 8 states. [2020-09-24 20:29:23,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:23,621 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-09-24 20:29:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:29:23,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-24 20:29:23,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:23,624 INFO L225 Difference]: With dead ends: 60 [2020-09-24 20:29:23,624 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 20:29:23,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:29:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 20:29:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-09-24 20:29:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 20:29:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-09-24 20:29:23,634 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2020-09-24 20:29:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:23,635 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-09-24 20:29:23,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:29:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-09-24 20:29:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 20:29:23,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:23,637 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:29:23,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:29:23,638 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:23,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1471095088, now seen corresponding path program 1 times [2020-09-24 20:29:23,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:23,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5101355] [2020-09-24 20:29:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:23,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:25,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:25,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:29:25,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:29:25,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1466 [2020-09-24 20:29:25,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:29:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:29:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:29:25,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:25,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:25,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:25,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:25,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:25,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:29:25,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:25,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 20:29:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:25,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:25,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:25,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:25,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 20:29:25,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:29:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:29:25,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:29:25,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5101355] [2020-09-24 20:29:25,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:29:25,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:29:25,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177475775] [2020-09-24 20:29:25,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:29:25,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:25,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:29:25,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:29:25,508 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 14 states. [2020-09-24 20:29:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:26,146 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-09-24 20:29:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:29:26,148 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-09-24 20:29:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:26,149 INFO L225 Difference]: With dead ends: 43 [2020-09-24 20:29:26,149 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:29:26,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:29:26,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:29:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:29:26,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:29:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:29:26,153 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-09-24 20:29:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:26,153 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:29:26,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:29:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:29:26,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:29:26,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:29:26,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:29:26,316 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 20:29:26,316 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 20:29:26,316 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:29:26,316 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 20:29:26,317 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:29:26,317 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:29:26,317 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:29:26,317 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:29:26,317 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:29:26,317 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 20:29:26,318 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 20:29:26,318 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 20:29:26,318 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-09-24 20:29:26,318 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 20:29:26,318 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 20:29:26,318 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:29:26,319 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 20:29:26,319 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 20:29:26,319 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:29:26,319 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 20:29:26,319 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 20:29:26,319 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-09-24 20:29:26,319 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-24 20:29:26,320 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 20:29:26,320 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 20:29:26,320 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-09-24 20:29:26,320 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-24 20:29:26,320 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-24 20:29:26,320 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 20:29:26,320 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 20:29:26,321 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 20:29:26,321 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-09-24 20:29:26,321 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-09-24 20:29:26,321 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 20:29:26,321 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 20:29:26,321 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-09-24 20:29:26,322 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-09-24 20:29:26,322 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-09-24 20:29:26,322 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 20:29:26,322 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-09-24 20:29:26,322 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 20:29:26,322 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 20:29:26,323 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-24 20:29:26,323 INFO L264 CegarLoopResult]: At program point L26-5(lines 26 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (<= main_~ad2~0.offset |main_~#ad1~0.offset|) (<= main_~i~0 .cse0) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-09-24 20:29:26,323 INFO L264 CegarLoopResult]: At program point L26-6(lines 26 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (<= main_~ad2~0.offset |main_~#ad1~0.offset|) (<= main_~i~0 .cse1) (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1))) [2020-09-24 20:29:26,323 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-09-24 20:29:26,324 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 20:29:26,324 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-24 20:29:26,324 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-09-24 20:29:26,324 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-24 20:29:26,324 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-09-24 20:29:26,324 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-09-24 20:29:26,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,342 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,348 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,349 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,349 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,349 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:29:26 BoogieIcfgContainer [2020-09-24 20:29:26,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:29:26,356 INFO L168 Benchmark]: Toolchain (without parser) took 5597.33 ms. Allocated memory was 141.0 MB in the beginning and 245.4 MB in the end (delta: 104.3 MB). Free memory was 104.5 MB in the beginning and 172.9 MB in the end (delta: -68.4 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:26,357 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:29:26,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.71 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 93.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:26,359 INFO L168 Benchmark]: Boogie Preprocessor took 143.85 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 93.7 MB in the beginning and 182.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:26,360 INFO L168 Benchmark]: RCFGBuilder took 381.56 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 165.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:26,361 INFO L168 Benchmark]: TraceAbstraction took 4735.87 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 164.8 MB in the beginning and 172.9 MB in the end (delta: -8.1 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:26,366 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.71 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 93.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.85 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 93.7 MB in the beginning and 182.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.56 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 165.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4735.87 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 164.8 MB in the beginning and 172.9 MB in the end (delta: -8.1 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant [2020-09-24 20:29:26,376 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,376 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,376 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,377 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,377 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,378 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,378 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 20:29:26,378 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((ad1 <= ad2 && ad1 == ad2) && ad2 <= ad1) && i <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[ad1][unknown-#memory_int-unknown[pa][pa] * 8 + ad1] == unknown-#memory_int-unknown[pa][pa] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 107 SDtfs, 74 SDslu, 246 SDs, 0 SdLazy, 350 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 100 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 24906 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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 correct! Received shutdown request...