/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:48:30,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:48:30,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:48:30,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:48:30,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:48:30,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:48:30,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:48:30,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:48:30,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:48:30,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:48:30,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:48:30,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:48:30,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:48:30,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:48:30,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:48:30,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:48:30,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:48:30,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:48:30,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:48:30,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:48:30,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:48:30,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:48:30,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:48:30,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:48:30,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:48:30,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:48:30,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:48:30,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:48:30,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:48:30,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:48:30,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:48:30,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:48:30,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:48:30,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:48:30,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:48:30,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:48:30,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:48:30,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:48:30,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:48:30,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:48:30,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:48:30,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:48:30,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:48:30,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:48:30,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:48:30,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:48:30,253 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:48:30,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:48:30,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:48:30,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:48:30,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:48:30,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:48:30,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:48:30,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:48:30,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:48:30,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:48:30,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:48:30,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:48:30,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:48:30,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:48:30,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:48:30,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:48:30,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:48:30,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:48:30,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:48:30,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:48:30,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:48:30,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:48:30,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:48:30,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:48:30,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:48:30,258 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:48:30,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:48:30,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:48:30,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:48:30,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:48:30,770 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:48:30,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-09-25 14:48:30,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dff26a81d/a876a4be4d7f40d6a99a6eb8c589fc19/FLAG12bf92ca8 [2020-09-25 14:48:31,406 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:48:31,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-09-25 14:48:31,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dff26a81d/a876a4be4d7f40d6a99a6eb8c589fc19/FLAG12bf92ca8 [2020-09-25 14:48:31,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dff26a81d/a876a4be4d7f40d6a99a6eb8c589fc19 [2020-09-25 14:48:31,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:48:31,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:48:31,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:48:31,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:48:31,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:48:31,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:48:31" (1/1) ... [2020-09-25 14:48:31,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cd098f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:31, skipping insertion in model container [2020-09-25 14:48:31,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:48:31" (1/1) ... [2020-09-25 14:48:31,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:48:31,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:48:32,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:48:32,032 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:48:32,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:48:32,071 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:48:32,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:32 WrapperNode [2020-09-25 14:48:32,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:48:32,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:48:32,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:48:32,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:48:32,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:32" (1/1) ... [2020-09-25 14:48:32,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:32" (1/1) ... [2020-09-25 14:48:32,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:32" (1/1) ... [2020-09-25 14:48:32,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:32" (1/1) ... [2020-09-25 14:48:32,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:32" (1/1) ... [2020-09-25 14:48:32,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:32" (1/1) ... [2020-09-25 14:48:32,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:32" (1/1) ... [2020-09-25 14:48:32,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:48:32,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:48:32,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:48:32,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:48:32,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:48:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:48:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:48:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 14:48:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:48:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:48:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:48:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:48:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 14:48:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:48:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:48:32,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:48:32,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:48:32,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:48:32,476 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:48:32,476 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:48:32,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:48:32 BoogieIcfgContainer [2020-09-25 14:48:32,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:48:32,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:48:32,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:48:32,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:48:32,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:48:31" (1/3) ... [2020-09-25 14:48:32,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3ed44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:48:32, skipping insertion in model container [2020-09-25 14:48:32,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:32" (2/3) ... [2020-09-25 14:48:32,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3ed44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:48:32, skipping insertion in model container [2020-09-25 14:48:32,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:48:32" (3/3) ... [2020-09-25 14:48:32,490 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-09-25 14:48:32,502 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:48:32,512 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:48:32,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:48:32,566 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:48:32,566 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:48:32,566 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:48:32,566 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:48:32,567 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:48:32,567 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:48:32,567 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:48:32,567 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:48:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-25 14:48:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-25 14:48:32,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:32,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:48:32,600 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:32,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash 576660498, now seen corresponding path program 1 times [2020-09-25 14:48:32,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:32,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033494694] [2020-09-25 14:48:32,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:32,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:32,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:48:32,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:32,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 14:48:32,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:32,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:48:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:48:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:48:32,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:48:32,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:32,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:32,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:32,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:32,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:32,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:32,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:48:32,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033494694] [2020-09-25 14:48:32,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:48:32,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:48:32,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075079026] [2020-09-25 14:48:32,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:48:32,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:32,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:48:32,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:48:32,957 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-09-25 14:48:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:33,097 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-09-25 14:48:33,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:48:33,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-25 14:48:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:33,111 INFO L225 Difference]: With dead ends: 46 [2020-09-25 14:48:33,111 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 14:48:33,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:48:33,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 14:48:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-09-25 14:48:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 14:48:33,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-25 14:48:33,177 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2020-09-25 14:48:33,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:33,178 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-25 14:48:33,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:48:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-25 14:48:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 14:48:33,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:33,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:48:33,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:48:33,180 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:33,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:33,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867886, now seen corresponding path program 1 times [2020-09-25 14:48:33,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:33,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362950481] [2020-09-25 14:48:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:33,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:33,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:48:33,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:48:33,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 14:48:33,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:33,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:33,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:48:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:48:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:48:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:48:33,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:33,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:33,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:33,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:33,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:33,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:33,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:33,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:33,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:33,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:33,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:48:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:33,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:33,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:33,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:33,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:33,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:48:33,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:33,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:33,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:33,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:33,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:33,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:48:33,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362950481] [2020-09-25 14:48:33,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:48:33,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:48:33,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151848614] [2020-09-25 14:48:33,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:48:33,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:33,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:48:33,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:48:33,625 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-09-25 14:48:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:33,733 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-25 14:48:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:48:33,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 14:48:33,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:33,736 INFO L225 Difference]: With dead ends: 36 [2020-09-25 14:48:33,736 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 14:48:33,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:48:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 14:48:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-25 14:48:33,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 14:48:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-25 14:48:33,746 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-09-25 14:48:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:33,747 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-25 14:48:33,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:48:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-25 14:48:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 14:48:33,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:33,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:48:33,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:48:33,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:33,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:33,750 INFO L82 PathProgramCache]: Analyzing trace with hash -677174382, now seen corresponding path program 2 times [2020-09-25 14:48:33,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:33,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627443735] [2020-09-25 14:48:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:33,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:33,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:34,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:34,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 14:48:34,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:48:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-09-25 14:48:34,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:34,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:48:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:48:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:48:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:34,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:48:34,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:34,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:34,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:48:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:34,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:34,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:34,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:34,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:34,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:34,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 14:48:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:34,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:34,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:34,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:48:34,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:34,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:34,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:34,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:34,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:34,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 14:48:34,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627443735] [2020-09-25 14:48:34,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:48:34,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:48:34,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371873369] [2020-09-25 14:48:34,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:48:34,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:34,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:48:34,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:48:34,895 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2020-09-25 14:48:35,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:35,051 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-09-25 14:48:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:48:35,053 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-09-25 14:48:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:35,054 INFO L225 Difference]: With dead ends: 45 [2020-09-25 14:48:35,055 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 14:48:35,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:48:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 14:48:35,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-09-25 14:48:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 14:48:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-25 14:48:35,075 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-09-25 14:48:35,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:35,076 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-25 14:48:35,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:48:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-25 14:48:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 14:48:35,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:35,080 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:48:35,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:48:35,083 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:35,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash 785729966, now seen corresponding path program 3 times [2020-09-25 14:48:35,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:35,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557372759] [2020-09-25 14:48:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:39,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:39,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:48:39,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:48:39,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4020 [2020-09-25 14:48:39,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:39,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:48:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:48:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:48:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:39,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:39,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:39,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:39,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:39,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:48:39,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:39,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:39,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:39,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:48:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:39,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:39,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:39,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:39,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:48:39,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:39,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 14:48:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:39,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:39,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:39,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:39,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:48:39,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:39,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:39,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:39,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:48:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:39,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:39,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:39,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:48:39,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:39,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:39,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 14:48:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 14:48:39,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557372759] [2020-09-25 14:48:39,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:48:39,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:48:39,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334448795] [2020-09-25 14:48:39,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:48:39,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:39,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:48:39,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:48:39,339 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-09-25 14:48:39,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:39,550 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-25 14:48:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:48:39,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-09-25 14:48:39,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:39,552 INFO L225 Difference]: With dead ends: 54 [2020-09-25 14:48:39,552 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 14:48:39,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:48:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 14:48:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 14:48:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:48:39,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-09-25 14:48:39,570 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-09-25 14:48:39,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:39,571 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-09-25 14:48:39,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:48:39,571 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-09-25 14:48:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 14:48:39,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:39,577 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:48:39,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:48:39,577 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:39,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1857438482, now seen corresponding path program 4 times [2020-09-25 14:48:39,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:39,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914623746] [2020-09-25 14:48:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:39,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:39,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:40,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:44,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:44,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 14:48:44,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:48:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:48:44,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:44,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:48:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 14:48:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:48:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:44,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:44,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:44,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:44,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:48:44,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:44,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:44,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:48:44,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:48:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:44,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:44,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:44,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:44,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:44,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:44,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:44,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:44,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:48:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 14:48:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:44,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:44,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:44,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:44,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:44,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:48:44,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:44,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:44,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:48:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:44,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:44,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:44,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:44,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:44,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:44,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:48:44,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:44,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:48:44,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:44,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:48:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:44,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:44,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:44,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:44,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:44,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:44,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:44,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:44,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:44,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:44,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:44,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 14:48:44,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914623746] [2020-09-25 14:48:44,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:48:44,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:48:44,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465641747] [2020-09-25 14:48:44,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:48:44,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:44,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:48:44,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:48:44,793 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 9 states. [2020-09-25 14:48:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:44,890 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-09-25 14:48:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:48:44,891 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-09-25 14:48:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:44,891 INFO L225 Difference]: With dead ends: 50 [2020-09-25 14:48:44,892 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:48:44,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:48:44,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:48:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:48:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:48:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:48:44,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-09-25 14:48:44,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:44,895 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:48:44,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:48:44,895 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:48:44,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:48:44,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:48:44,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:48:44,982 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 14:48:44,982 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:48:44,982 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:48:44,982 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 14:48:44,982 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 14:48:44,983 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:48:44,983 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 14:48:44,983 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 14:48:44,983 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 14:48:44,983 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 14:48:44,984 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 14:48:44,984 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 19) the Hoare annotation is: true [2020-09-25 14:48:44,984 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 19) no Hoare annotation was computed. [2020-09-25 14:48:44,984 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (<= main_~i~0 999999) [2020-09-25 14:48:44,984 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 14:48:44,984 INFO L268 CegarLoopResult]: For program point L16-1(lines 15 17) no Hoare annotation was computed. [2020-09-25 14:48:44,985 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 19) no Hoare annotation was computed. [2020-09-25 14:48:44,985 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 14:48:44,985 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-25 14:48:44,985 INFO L264 CegarLoopResult]: At program point L15-5(lines 15 17) the Hoare annotation is: (<= main_~i~0 1000000) [2020-09-25 14:48:44,985 INFO L268 CegarLoopResult]: For program point L15-6(lines 15 17) no Hoare annotation was computed. [2020-09-25 14:48:44,986 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 14:48:44,986 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 14:48:44,986 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 14:48:44,986 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 14:48:44,986 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 14:48:44,986 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 14:48:45,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:48:45 BoogieIcfgContainer [2020-09-25 14:48:45,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:48:45,014 INFO L168 Benchmark]: Toolchain (without parser) took 13246.03 ms. Allocated memory was 137.4 MB in the beginning and 309.3 MB in the end (delta: 172.0 MB). Free memory was 99.5 MB in the beginning and 104.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 167.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:48:45,016 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:48:45,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.59 ms. Allocated memory is still 137.4 MB. Free memory was 98.9 MB in the beginning and 89.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:48:45,018 INFO L168 Benchmark]: Boogie Preprocessor took 117.42 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 89.5 MB in the beginning and 180.3 MB in the end (delta: -90.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:48:45,019 INFO L168 Benchmark]: RCFGBuilder took 289.61 ms. Allocated memory is still 200.3 MB. Free memory was 180.3 MB in the beginning and 167.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:48:45,020 INFO L168 Benchmark]: TraceAbstraction took 12529.15 ms. Allocated memory was 200.3 MB in the beginning and 309.3 MB in the end (delta: 109.1 MB). Free memory was 166.9 MB in the beginning and 104.4 MB in the end (delta: 62.5 MB). Peak memory consumption was 171.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:48:45,024 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.59 ms. Allocated memory is still 137.4 MB. Free memory was 98.9 MB in the beginning and 89.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.42 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 89.5 MB in the beginning and 180.3 MB in the end (delta: -90.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.61 ms. Allocated memory is still 200.3 MB. Free memory was 180.3 MB in the beginning and 167.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12529.15 ms. Allocated memory was 200.3 MB in the beginning and 309.3 MB in the end (delta: 109.1 MB). Free memory was 166.9 MB in the beginning and 104.4 MB in the end (delta: 62.5 MB). Peak memory consumption was 171.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.3s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 40 SDslu, 287 SDs, 0 SdLazy, 232 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, 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, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 22 NumberOfFragments, 11 HoareAnnotationTreeSize, 12 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 9064 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 92/130 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...