/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/test14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:29:09,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:29:09,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:29:09,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:29:09,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:29:09,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:29:09,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:29:09,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:29:09,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:29:09,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:29:09,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:29:09,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:29:09,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:29:09,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:29:09,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:29:09,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:29:09,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:29:09,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:29:09,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:29:09,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:29:09,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:29:09,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:29:09,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:29:09,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:29:09,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:29:09,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:29:09,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:29:09,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:29:09,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:29:09,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:29:09,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:29:09,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:29:09,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:29:09,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:29:09,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:29:09,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:29:09,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:29:09,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:29:09,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:29:09,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:29:09,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:29:09,654 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 20:29:09,717 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:29:09,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:29:09,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:29:09,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:29:09,725 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:29:09,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:29:09,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:29:09,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:29:09,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:29:09,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:29:09,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:29:09,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:29:09,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:29:09,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:29:09,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:29:09,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:29:09,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:29:09,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:29:09,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:29:09,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:29:09,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:29:09,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:29:09,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:29:09,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:29:09,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:29:09,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:29:09,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:29:09,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:29:09,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:29:09,731 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 20:29:10,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:29:10,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:29:10,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:29:10,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:29:10,227 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:29:10,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test14.c [2020-09-24 20:29:10,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfebb4d9d/82bb66308a59417c819842b7833a2ac8/FLAGefa1f4ba5 [2020-09-24 20:29:10,872 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:29:10,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test14.c [2020-09-24 20:29:10,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfebb4d9d/82bb66308a59417c819842b7833a2ac8/FLAGefa1f4ba5 [2020-09-24 20:29:11,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfebb4d9d/82bb66308a59417c819842b7833a2ac8 [2020-09-24 20:29:11,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:29:11,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:29:11,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:11,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:29:11,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:29:11,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:11" (1/1) ... [2020-09-24 20:29:11,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9e9167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11, skipping insertion in model container [2020-09-24 20:29:11,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:11" (1/1) ... [2020-09-24 20:29:11,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:29:11,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:29:11,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:11,520 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:29:11,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:11,556 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:29:11,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11 WrapperNode [2020-09-24 20:29:11,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:11,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:29:11,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:29:11,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:29:11,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11" (1/1) ... [2020-09-24 20:29:11,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11" (1/1) ... [2020-09-24 20:29:11,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11" (1/1) ... [2020-09-24 20:29:11,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11" (1/1) ... [2020-09-24 20:29:11,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11" (1/1) ... [2020-09-24 20:29:11,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11" (1/1) ... [2020-09-24 20:29:11,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11" (1/1) ... [2020-09-24 20:29:11,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:29:11,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:29:11,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:29:11,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:29:11,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11" (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 20:29:11,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:29:11,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:29:11,767 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-09-24 20:29:11,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:29:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:29:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:29:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 20:29:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-09-24 20:29:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:29:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:29:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:29:11,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:29:11,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:29:11,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:29:11,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:29:11,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:29:12,149 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:29:12,150 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:29:12,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:12 BoogieIcfgContainer [2020-09-24 20:29:12,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:29:12,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:29:12,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:29:12,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:29:12,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:29:11" (1/3) ... [2020-09-24 20:29:12,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a091f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:12, skipping insertion in model container [2020-09-24 20:29:12,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:11" (2/3) ... [2020-09-24 20:29:12,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a091f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:12, skipping insertion in model container [2020-09-24 20:29:12,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:12" (3/3) ... [2020-09-24 20:29:12,167 INFO L109 eAbstractionObserver]: Analyzing ICFG test14.c [2020-09-24 20:29:12,179 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:29:12,190 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:29:12,209 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:29:12,238 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:29:12,239 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:29:12,239 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:29:12,239 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:29:12,239 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:29:12,239 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:29:12,239 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:29:12,239 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:29:12,263 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 20:29:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 20:29:12,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:12,273 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, 1, 1, 1, 1, 1] [2020-09-24 20:29:12,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:12,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:12,279 INFO L82 PathProgramCache]: Analyzing trace with hash 465652526, now seen corresponding path program 1 times [2020-09-24 20:29:12,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:12,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406521900] [2020-09-24 20:29:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:13,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:13,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:29:13,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:29:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-09-24 20:29:13,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:13,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:29:13,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:29:13,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:29:13,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:29:13,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:13,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:13,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:13,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 20:29:13,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 20:29:13,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:13,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:29:13,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 20:29:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:13,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:13,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:13,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:13,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:13,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 20:29:13,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:13,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:29:13,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:13,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:29:13,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:13,433 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 20:29:13,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406521900] [2020-09-24 20:29:13,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:13,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:29:13,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016125416] [2020-09-24 20:29:13,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:29:13,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:13,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:29:13,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:29:13,470 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 6 states. [2020-09-24 20:29:13,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:13,704 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2020-09-24 20:29:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:29:13,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-24 20:29:13,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:13,720 INFO L225 Difference]: With dead ends: 83 [2020-09-24 20:29:13,720 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 20:29:13,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:29:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 20:29:13,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 20:29:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 20:29:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-09-24 20:29:13,778 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 43 [2020-09-24 20:29:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:13,779 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-09-24 20:29:13,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:29:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-09-24 20:29:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 20:29:13,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:13,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:13,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:29:13,782 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:13,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:13,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1782210472, now seen corresponding path program 1 times [2020-09-24 20:29:13,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:13,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256348531] [2020-09-24 20:29:13,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:13,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:14,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:14,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:29:14,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:29:14,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-24 20:29:14,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:29:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 20:29:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 20:29:14,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:14,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:14,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:14,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:14,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 20:29:14,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:29:14,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:14,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:14,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 20:29:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:14,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:14,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:14,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:14,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:29:14,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:14,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:14,183 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 20:29:14,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256348531] [2020-09-24 20:29:14,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:14,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:29:14,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644865423] [2020-09-24 20:29:14,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:29:14,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:14,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:29:14,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:29:14,188 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 5 states. [2020-09-24 20:29:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:14,301 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-09-24 20:29:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:29:14,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-24 20:29:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:14,304 INFO L225 Difference]: With dead ends: 59 [2020-09-24 20:29:14,304 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 20:29:14,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:29:14,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 20:29:14,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 20:29:14,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 20:29:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-09-24 20:29:14,314 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2020-09-24 20:29:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:14,315 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-09-24 20:29:14,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:29:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-09-24 20:29:14,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 20:29:14,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:14,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:14,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:29:14,317 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:14,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1590234488, now seen corresponding path program 1 times [2020-09-24 20:29:14,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:14,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038574812] [2020-09-24 20:29:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:14,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:14,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 20:29:14,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:29:14,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-24 20:29:14,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:14,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:29:14,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 20:29:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:29:14,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:14,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:14,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:14,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:14,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 20:29:14,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:14,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:29:14,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:14,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:14,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:14,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:14,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 20:29:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:14,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:14,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:29:14,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:29:14,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:14,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:14,964 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 20:29:14,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038574812] [2020-09-24 20:29:14,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:14,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:29:14,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352016021] [2020-09-24 20:29:14,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:29:14,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:14,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:29:14,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:29:14,967 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 9 states. [2020-09-24 20:29:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:15,216 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-09-24 20:29:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:29:15,217 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-24 20:29:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:15,218 INFO L225 Difference]: With dead ends: 51 [2020-09-24 20:29:15,218 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:29:15,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:29:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:29:15,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:29:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:29:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:29:15,221 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-09-24 20:29:15,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:15,221 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:29:15,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:29:15,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:29:15,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:29:15,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:29:15,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:29:15,366 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 20:29:15,366 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 20:29:15,367 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line 5) no Hoare annotation was computed. [2020-09-24 20:29:15,367 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#b~0.offset| |old(~#b~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 20:29:15,367 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 20:29:15,367 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 20:29:15,368 INFO L268 CegarLoopResult]: For program point L5-2(line 5) no Hoare annotation was computed. [2020-09-24 20:29:15,368 INFO L268 CegarLoopResult]: For program point L5-3(line 5) no Hoare annotation was computed. [2020-09-24 20:29:15,368 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:29:15,373 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-24 20:29:15,373 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 20:29:15,375 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2020-09-24 20:29:15,375 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 20:29:15,376 INFO L268 CegarLoopResult]: For program point L9-3(line 9) no Hoare annotation was computed. [2020-09-24 20:29:15,376 INFO L268 CegarLoopResult]: For program point L9-4(line 9) no Hoare annotation was computed. [2020-09-24 20:29:15,376 INFO L268 CegarLoopResult]: For program point L9-5(line 9) no Hoare annotation was computed. [2020-09-24 20:29:15,376 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-24 20:29:15,376 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:29:15,376 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:29:15,377 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:29:15,377 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:29:15,377 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2020-09-24 20:29:15,377 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 20:29:15,377 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,377 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,377 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,378 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,378 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:29:15,378 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,378 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 20:29:15,378 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 20:29:15,378 INFO L268 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,378 INFO L268 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,379 INFO L268 CegarLoopResult]: For program point L19-8(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,379 INFO L268 CegarLoopResult]: For program point L19-9(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,379 INFO L268 CegarLoopResult]: For program point L19-10(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,379 INFO L268 CegarLoopResult]: For program point L19-11(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,379 INFO L268 CegarLoopResult]: For program point L19-12(line 19) no Hoare annotation was computed. [2020-09-24 20:29:15,379 INFO L264 CegarLoopResult]: At program point L20(lines 12 27) the Hoare annotation is: false [2020-09-24 20:29:15,380 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:29:15,380 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 20:29:15,380 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 20:29:15,380 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2020-09-24 20:29:15,380 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 20:29:15,380 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 20:29:15,381 INFO L268 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-09-24 20:29:15,381 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 20:29:15,381 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2020-09-24 20:29:15,381 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 20:29:15,381 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 20:29:15,381 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-24 20:29:15,382 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-24 20:29:15,382 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-24 20:29:15,382 INFO L268 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-09-24 20:29:15,382 INFO L268 CegarLoopResult]: For program point L13-7(line 13) no Hoare annotation was computed. [2020-09-24 20:29:15,382 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-24 20:29:15,382 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 27) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-24 20:29:15,383 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 20:29:15,384 INFO L268 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-09-24 20:29:15,384 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 19) no Hoare annotation was computed. [2020-09-24 20:29:15,384 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2020-09-24 20:29:15,384 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 20:29:15,385 INFO L268 CegarLoopResult]: For program point L18-4(lines 18 19) no Hoare annotation was computed. [2020-09-24 20:29:15,385 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 20:29:15,385 INFO L268 CegarLoopResult]: For program point L18-5(lines 18 19) no Hoare annotation was computed. [2020-09-24 20:29:15,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:29:15 BoogieIcfgContainer [2020-09-24 20:29:15,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:29:15,411 INFO L168 Benchmark]: Toolchain (without parser) took 4176.46 ms. Allocated memory was 142.1 MB in the beginning and 241.2 MB in the end (delta: 99.1 MB). Free memory was 105.6 MB in the beginning and 142.5 MB in the end (delta: -36.9 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:15,412 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:29:15,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.70 ms. Allocated memory is still 142.1 MB. Free memory was 105.0 MB in the beginning and 95.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:15,416 INFO L168 Benchmark]: Boogie Preprocessor took 119.97 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 95.2 MB in the beginning and 181.5 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:15,418 INFO L168 Benchmark]: RCFGBuilder took 477.66 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 162.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:15,426 INFO L168 Benchmark]: TraceAbstraction took 3245.14 ms. Allocated memory was 203.4 MB in the beginning and 241.2 MB in the end (delta: 37.7 MB). Free memory was 162.1 MB in the beginning and 142.5 MB in the end (delta: 19.6 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:15,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.70 ms. Allocated memory is still 142.1 MB. Free memory was 105.0 MB in the beginning and 95.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.97 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 95.2 MB in the beginning and 181.5 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 477.66 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 162.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3245.14 ms. Allocated memory was 203.4 MB in the beginning and 241.2 MB in the end (delta: 37.7 MB). Free memory was 162.1 MB in the beginning and 142.5 MB in the end (delta: 19.6 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 117 SDslu, 250 SDs, 0 SdLazy, 263 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 45 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 12555 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...