/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=0.1 --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-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:18:17,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:18:17,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:18:17,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:18:17,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:18:17,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:18:17,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:18:17,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:18:17,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:18:17,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:18:17,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:18:17,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:18:17,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:18:17,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:18:17,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:18:17,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:18:17,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:18:17,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:18:17,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:18:17,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:18:17,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:18:17,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:18:17,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:18:17,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:18:17,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:18:17,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:18:17,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:18:17,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:18:17,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:18:17,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:18:17,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:18:17,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:18:17,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:18:17,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:18:17,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:18:17,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:18:17,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:18:17,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:18:17,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:18:17,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:18:17,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:18:17,265 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 10:18:17,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:18:17,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:18:17,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:18:17,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:18:17,319 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:18:17,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:18:17,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:18:17,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:18:17,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:18:17,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:18:17,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:18:17,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:18:17,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:18:17,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:18:17,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:18:17,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:18:17,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:18:17,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:18:17,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:18:17,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:18:17,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:18:17,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:18:17,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:18:17,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:18:17,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:18:17,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:18:17,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:18:17,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:18:17,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:18:17,326 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:18:17,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:18:17,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:18:17,844 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:18:17,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:18:17,846 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:18:17,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-09-25 10:18:17,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6faf9c04/cf036343cdf145f283a90a2a239fbf77/FLAG3d6694e5e [2020-09-25 10:18:18,503 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:18:18,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-09-25 10:18:18,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6faf9c04/cf036343cdf145f283a90a2a239fbf77/FLAG3d6694e5e [2020-09-25 10:18:18,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6faf9c04/cf036343cdf145f283a90a2a239fbf77 [2020-09-25 10:18:18,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:18:18,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:18:18,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:18:18,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:18:18,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:18:18,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:18" (1/1) ... [2020-09-25 10:18:18,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718a405b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:18, skipping insertion in model container [2020-09-25 10:18:18,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:18" (1/1) ... [2020-09-25 10:18:18,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:18:18,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:18:19,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:18:19,126 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:18:19,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:18:19,168 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:18:19,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19 WrapperNode [2020-09-25 10:18:19,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:18:19,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:18:19,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:18:19,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:18:19,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (1/1) ... [2020-09-25 10:18:19,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:18:19,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:18:19,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:18:19,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:18:19,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (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 10:18:19,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:18:19,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:18:19,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:18:19,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:18:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:18:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:18:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:18:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:18:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:18:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:18:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:18:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:18:19,616 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:18:19,616 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:18:19,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:19 BoogieIcfgContainer [2020-09-25 10:18:19,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:18:19,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:18:19,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:18:19,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:18:19,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:18:18" (1/3) ... [2020-09-25 10:18:19,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5443e57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:19, skipping insertion in model container [2020-09-25 10:18:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:19" (2/3) ... [2020-09-25 10:18:19,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5443e57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:19, skipping insertion in model container [2020-09-25 10:18:19,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:19" (3/3) ... [2020-09-25 10:18:19,639 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2020-09-25 10:18:19,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:18:19,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:18:19,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:18:19,738 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:18:19,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:18:19,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:18:19,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:18:19,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:18:19,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:18:19,738 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:18:19,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:18:19,759 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 10:18:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 10:18:19,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:19,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:19,768 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:19,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:19,775 INFO L82 PathProgramCache]: Analyzing trace with hash 341466613, now seen corresponding path program 1 times [2020-09-25 10:18:19,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:19,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493847480] [2020-09-25 10:18:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:19,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:19,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 10:18:19,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:19,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 10:18:19,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:19,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:19,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:19,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:18:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:18:20,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:20,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:20,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:20,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:18:20,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:20,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:20,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:20,071 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 10:18:20,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493847480] [2020-09-25 10:18:20,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:20,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:18:20,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036960273] [2020-09-25 10:18:20,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:18:20,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:20,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:18:20,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:18:20,104 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-09-25 10:18:20,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:20,244 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-09-25 10:18:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:18:20,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-09-25 10:18:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:20,259 INFO L225 Difference]: With dead ends: 51 [2020-09-25 10:18:20,260 INFO L226 Difference]: Without dead ends: 27 [2020-09-25 10:18:20,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:18:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-25 10:18:20,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-09-25 10:18:20,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 10:18:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-25 10:18:20,314 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 21 [2020-09-25 10:18:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:20,315 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-25 10:18:20,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:18:20,315 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-25 10:18:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 10:18:20,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:20,316 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] [2020-09-25 10:18:20,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:18:20,317 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:20,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash 178703795, now seen corresponding path program 1 times [2020-09-25 10:18:20,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:20,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235071542] [2020-09-25 10:18:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:20,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:20,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:18:20,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:18:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-25 10:18:20,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:20,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:20,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:18:20,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:20,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:18:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:18:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:20,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:20,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:20,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:20,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:20,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:20,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:20,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235071542] [2020-09-25 10:18:20,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:20,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:18:20,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013154967] [2020-09-25 10:18:20,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:18:20,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:20,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:18:20,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:18:20,830 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-09-25 10:18:21,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:21,154 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-09-25 10:18:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:18:21,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-25 10:18:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:21,157 INFO L225 Difference]: With dead ends: 38 [2020-09-25 10:18:21,158 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 10:18:21,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:18:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 10:18:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-09-25 10:18:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 10:18:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-09-25 10:18:21,177 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2020-09-25 10:18:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:21,177 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-09-25 10:18:21,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:18:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-09-25 10:18:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 10:18:21,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:21,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:21,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:18:21,182 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:21,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:21,183 INFO L82 PathProgramCache]: Analyzing trace with hash 563687025, now seen corresponding path program 2 times [2020-09-25 10:18:21,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:21,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847822211] [2020-09-25 10:18:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:21,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:18:21,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:18:21,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-09-25 10:18:21,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:21,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:18:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:18:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:21,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:21,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:21,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:21,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:21,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:21,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:21,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:21,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847822211] [2020-09-25 10:18:21,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:21,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:18:21,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394396356] [2020-09-25 10:18:21,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:18:21,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:18:21,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:18:21,762 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2020-09-25 10:18:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:22,134 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-09-25 10:18:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:18:22,135 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-25 10:18:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:22,136 INFO L225 Difference]: With dead ends: 42 [2020-09-25 10:18:22,137 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 10:18:22,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:18:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 10:18:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-09-25 10:18:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 10:18:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-09-25 10:18:22,150 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 29 [2020-09-25 10:18:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:22,150 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-09-25 10:18:22,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:18:22,151 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-09-25 10:18:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 10:18:22,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:22,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:22,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:18:22,154 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:22,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1026490321, now seen corresponding path program 3 times [2020-09-25 10:18:22,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:22,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486358211] [2020-09-25 10:18:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:22,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:23,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:18:23,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:18:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-09-25 10:18:23,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:23,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:18:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:18:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:23,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:23,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:23,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:23,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:23,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:23,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:23,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:23,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486358211] [2020-09-25 10:18:23,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:23,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:18:23,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922757555] [2020-09-25 10:18:23,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:18:23,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:23,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:18:23,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:18:23,202 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 13 states. [2020-09-25 10:18:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:23,544 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-25 10:18:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:18:23,545 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-09-25 10:18:23,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:23,546 INFO L225 Difference]: With dead ends: 46 [2020-09-25 10:18:23,546 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 10:18:23,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:18:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 10:18:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-09-25 10:18:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 10:18:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-09-25 10:18:23,554 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 33 [2020-09-25 10:18:23,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:23,554 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-09-25 10:18:23,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:18:23,555 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-09-25 10:18:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 10:18:23,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:23,556 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:23,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:18:23,556 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:23,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2083373805, now seen corresponding path program 4 times [2020-09-25 10:18:23,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:23,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146348318] [2020-09-25 10:18:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:23,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:23,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:23,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:25,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 10:18:25,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:18:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1552 [2020-09-25 10:18:25,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:25,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:18:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:18:25,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:25,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:25,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:25,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:25,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:25,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:25,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:25,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146348318] [2020-09-25 10:18:25,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:25,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:18:25,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910430199] [2020-09-25 10:18:25,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:18:25,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:25,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:18:25,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:18:25,285 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 15 states. [2020-09-25 10:18:25,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:25,762 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-09-25 10:18:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:18:25,763 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-09-25 10:18:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:25,764 INFO L225 Difference]: With dead ends: 50 [2020-09-25 10:18:25,764 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 10:18:25,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:18:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 10:18:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-09-25 10:18:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:18:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-09-25 10:18:25,772 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 37 [2020-09-25 10:18:25,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:25,772 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-09-25 10:18:25,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:18:25,773 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-09-25 10:18:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 10:18:25,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:25,774 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:25,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:18:25,775 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:25,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:25,775 INFO L82 PathProgramCache]: Analyzing trace with hash -540084565, now seen corresponding path program 5 times [2020-09-25 10:18:25,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:25,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361964176] [2020-09-25 10:18:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:26,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:18:26,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:18:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-09-25 10:18:26,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:26,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:18:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:18:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:27,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:27,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:27,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:27,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:27,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:27,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:27,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361964176] [2020-09-25 10:18:27,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:27,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:18:27,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864040414] [2020-09-25 10:18:27,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:18:27,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:27,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:18:27,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:18:27,231 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 17 states. [2020-09-25 10:18:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:27,739 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-25 10:18:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:18:27,740 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-09-25 10:18:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:27,741 INFO L225 Difference]: With dead ends: 54 [2020-09-25 10:18:27,742 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 10:18:27,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2020-09-25 10:18:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 10:18:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-09-25 10:18:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 10:18:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-09-25 10:18:27,749 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 41 [2020-09-25 10:18:27,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:27,750 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-09-25 10:18:27,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:18:27,750 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-09-25 10:18:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 10:18:27,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:27,751 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:27,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:18:27,752 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:27,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1679039337, now seen corresponding path program 6 times [2020-09-25 10:18:27,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:27,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875311868] [2020-09-25 10:18:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:27,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:27,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:28,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:18:28,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:18:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-09-25 10:18:28,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:28,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:18:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:18:28,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:29,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:29,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:29,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:18:29,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:29,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:29,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:29,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875311868] [2020-09-25 10:18:29,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:29,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:18:29,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750851269] [2020-09-25 10:18:29,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:18:29,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:29,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:18:29,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:18:29,162 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 19 states. [2020-09-25 10:18:29,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:29,759 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-09-25 10:18:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:18:29,760 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-09-25 10:18:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:29,761 INFO L225 Difference]: With dead ends: 58 [2020-09-25 10:18:29,762 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 10:18:29,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 10:18:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 10:18:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-09-25 10:18:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:18:29,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-09-25 10:18:29,770 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 45 [2020-09-25 10:18:29,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:29,770 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-09-25 10:18:29,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:18:29,771 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-09-25 10:18:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 10:18:29,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:29,772 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:29,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:18:29,773 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:29,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1134342439, now seen corresponding path program 7 times [2020-09-25 10:18:29,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:29,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350819219] [2020-09-25 10:18:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:29,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:30,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:30,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:31,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:18:31,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:18:31,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1485 [2020-09-25 10:18:31,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:31,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:18:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:18:31,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:31,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:31,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:31,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:31,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:31,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:31,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:31,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:18:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:31,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350819219] [2020-09-25 10:18:31,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:31,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:18:31,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167164349] [2020-09-25 10:18:31,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:18:31,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:31,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:18:31,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:18:31,580 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 21 states. [2020-09-25 10:18:32,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:32,267 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-25 10:18:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 10:18:32,268 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-09-25 10:18:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:32,269 INFO L225 Difference]: With dead ends: 62 [2020-09-25 10:18:32,269 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 10:18:32,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2020-09-25 10:18:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 10:18:32,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-09-25 10:18:32,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 10:18:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-09-25 10:18:32,279 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 49 [2020-09-25 10:18:32,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:32,279 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-09-25 10:18:32,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:18:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-09-25 10:18:32,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 10:18:32,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:32,281 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:32,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:18:32,281 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:32,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:32,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1565013989, now seen corresponding path program 8 times [2020-09-25 10:18:32,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:32,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791795300] [2020-09-25 10:18:32,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:32,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:33,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:33,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:34,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:34,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 10:18:34,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:18:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2394 [2020-09-25 10:18:34,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:34,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:18:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:34,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 10:18:34,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:35,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:35,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:35,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:35,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:35,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:35,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:35,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:35,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:35,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:35,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791795300] [2020-09-25 10:18:35,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:35,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 10:18:35,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724680001] [2020-09-25 10:18:35,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 10:18:35,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:35,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 10:18:35,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:18:35,051 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 23 states. [2020-09-25 10:18:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:35,907 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-09-25 10:18:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 10:18:35,907 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-09-25 10:18:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:35,908 INFO L225 Difference]: With dead ends: 66 [2020-09-25 10:18:35,908 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 10:18:35,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 10:18:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 10:18:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-09-25 10:18:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 10:18:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-09-25 10:18:35,921 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 53 [2020-09-25 10:18:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:35,922 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-09-25 10:18:35,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 10:18:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-09-25 10:18:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 10:18:35,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:35,924 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:35,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:18:35,924 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:35,929 INFO L82 PathProgramCache]: Analyzing trace with hash 339095459, now seen corresponding path program 9 times [2020-09-25 10:18:35,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:35,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669063245] [2020-09-25 10:18:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:35,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:36,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:36,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:36,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:36,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:38,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:38,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:18:38,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:18:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2851 [2020-09-25 10:18:38,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:38,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 10:18:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:18:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:39,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:39,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:39,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:39,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:39,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:39,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669063245] [2020-09-25 10:18:39,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:39,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 10:18:39,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082764816] [2020-09-25 10:18:39,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 10:18:39,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:39,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 10:18:39,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:18:39,222 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 25 states. [2020-09-25 10:18:40,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:40,421 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2020-09-25 10:18:40,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 10:18:40,421 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-09-25 10:18:40,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:40,422 INFO L225 Difference]: With dead ends: 70 [2020-09-25 10:18:40,422 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 10:18:40,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2020-09-25 10:18:40,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 10:18:40,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-09-25 10:18:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 10:18:40,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-09-25 10:18:40,435 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 57 [2020-09-25 10:18:40,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:40,436 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-09-25 10:18:40,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 10:18:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-09-25 10:18:40,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 10:18:40,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:40,437 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:40,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:18:40,438 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:40,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:40,442 INFO L82 PathProgramCache]: Analyzing trace with hash 801511521, now seen corresponding path program 10 times [2020-09-25 10:18:40,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:40,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85002282] [2020-09-25 10:18:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:40,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:40,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:41,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:41,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:41,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:42,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:42,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:42,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:45,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:45,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 10:18:45,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 10:18:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4662 [2020-09-25 10:18:45,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:45,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 10:18:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:18:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:45,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:45,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:45,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:18:45,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:45,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:18:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:45,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85002282] [2020-09-25 10:18:45,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:45,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 10:18:45,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618191157] [2020-09-25 10:18:45,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 10:18:45,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:45,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 10:18:45,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:18:45,548 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 27 states. [2020-09-25 10:18:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:47,014 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-25 10:18:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 10:18:47,014 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-09-25 10:18:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:47,015 INFO L225 Difference]: With dead ends: 62 [2020-09-25 10:18:47,015 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:18:47,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=431, Invalid=2119, Unknown=0, NotChecked=0, Total=2550 [2020-09-25 10:18:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:18:47,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:18:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:18:47,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:18:47,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-25 10:18:47,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:47,019 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:18:47,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 10:18:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:18:47,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:18:47,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:18:47,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:18:47,204 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-09-25 10:18:47,210 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:18:47,210 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 10:18:47,211 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-09-25 10:18:47,211 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:18:47,211 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:18:47,211 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:18:47,211 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:18:47,213 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:18:47,213 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 10:18:47,213 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 10:18:47,213 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 10:18:47,213 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 10:18:47,213 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 10:18:47,214 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 10:18:47,214 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 10:18:47,214 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 58) no Hoare annotation was computed. [2020-09-25 10:18:47,215 INFO L268 CegarLoopResult]: For program point L23(lines 23 56) no Hoare annotation was computed. [2020-09-25 10:18:47,215 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 10:18:47,215 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 10:18:47,215 INFO L268 CegarLoopResult]: For program point L17(lines 17 57) no Hoare annotation was computed. [2020-09-25 10:18:47,215 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 10:18:47,215 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 10:18:47,216 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 58) no Hoare annotation was computed. [2020-09-25 10:18:47,216 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-09-25 10:18:47,216 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 10:18:47,216 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 10:18:47,216 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 10:18:47,216 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 10:18:47,216 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-09-25 10:18:47,217 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 58) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-09-25 10:18:47,217 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 10:18:47,218 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:18:47,218 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 10:18:47,219 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 10:18:47,219 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 10:18:47,219 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 10:18:47,219 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 10:18:47,219 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 10:18:47,223 INFO L264 CegarLoopResult]: At program point L35(lines 28 56) the Hoare annotation is: (let ((.cse2 (<= main_~main__x~0 (+ main_~main__y~0 24))) (.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and .cse0 (<= main_~main__x~0 25) (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0))) (let ((.cse1 (+ main_~main__x~0 51))) (and (<= main_~main__y~0 .cse1) .cse0 (<= .cse1 main_~main__y~0))) (let ((.cse4 (+ main_~main__x~0 53)) (.cse3 (* 2 main_~main__y~0))) (and .cse2 (<= .cse3 .cse4) (<= .cse4 .cse3) .cse0)) (let ((.cse5 (+ main_~main__x~0 50))) (and .cse0 (<= 0 .cse5) (<= .cse5 0))) (and .cse2 .cse0 (<= (+ main_~main__x~0 3) (* 7 main_~main__y~0))))) [2020-09-25 10:18:47,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:18:47 BoogieIcfgContainer [2020-09-25 10:18:47,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:18:47,261 INFO L168 Benchmark]: Toolchain (without parser) took 28414.06 ms. Allocated memory was 138.4 MB in the beginning and 401.1 MB in the end (delta: 262.7 MB). Free memory was 100.5 MB in the beginning and 364.3 MB in the end (delta: -263.8 MB). Peak memory consumption was 265.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:47,262 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:18:47,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.31 ms. Allocated memory is still 138.4 MB. Free memory was 99.9 MB in the beginning and 89.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:47,269 INFO L168 Benchmark]: Boogie Preprocessor took 127.35 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 89.8 MB in the beginning and 180.6 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:47,270 INFO L168 Benchmark]: RCFGBuilder took 325.52 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 166.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:47,271 INFO L168 Benchmark]: TraceAbstraction took 27631.66 ms. Allocated memory was 201.9 MB in the beginning and 401.1 MB in the end (delta: 199.2 MB). Free memory was 166.1 MB in the beginning and 364.3 MB in the end (delta: -198.2 MB). Peak memory consumption was 267.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:47,282 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.31 ms. Allocated memory is still 138.4 MB. Free memory was 99.9 MB in the beginning and 89.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.35 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 89.8 MB in the beginning and 180.6 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.52 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 166.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27631.66 ms. Allocated memory was 201.9 MB in the beginning and 401.1 MB in the end (delta: 199.2 MB). Free memory was 166.1 MB in the beginning and 364.3 MB in the end (delta: -198.2 MB). Peak memory consumption was 267.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: 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: 28]: Loop Invariant Derived loop invariant: (((((\old(__return_65) == __return_65 && main__x <= 25) && main__x + 56 <= 3 * main__y) || ((main__y <= main__x + 51 && \old(__return_65) == __return_65) && main__x + 51 <= main__y)) || (((main__x <= main__y + 24 && 2 * main__y <= main__x + 53) && main__x + 53 <= 2 * main__y) && \old(__return_65) == __return_65)) || ((\old(__return_65) == __return_65 && 0 <= main__x + 50) && main__x + 50 <= 0)) || ((main__x <= main__y + 24 && \old(__return_65) == __return_65) && main__x + 3 <= 7 * main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.2s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 648 SDslu, 639 SDs, 0 SdLazy, 4054 SolverSat, 203 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2466 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 15 NumberOfFragments, 94 HoareAnnotationTreeSize, 5 FomulaSimplifications, 102 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.6s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 440 ConstructedInterpolants, 0 QuantifiedInterpolants, 95164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/715 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...