/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:23:47,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:23:47,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:23:47,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:23:47,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:23:47,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:23:47,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:23:47,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:23:47,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:23:47,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:23:47,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:23:47,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:23:47,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:23:47,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:23:47,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:23:47,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:23:47,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:23:47,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:23:47,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:23:47,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:23:47,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:23:47,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:23:47,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:23:47,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:23:47,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:23:47,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:23:47,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:23:47,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:23:47,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:23:47,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:23:47,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:23:47,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:23:47,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:23:47,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:23:47,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:23:47,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:23:47,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:23:47,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:23:47,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:23:47,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:23:47,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:23:47,242 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 03:23:47,278 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:23:47,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:23:47,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:23:47,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:23:47,280 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:23:47,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:23:47,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:23:47,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:23:47,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:23:47,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:23:47,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:23:47,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:23:47,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:23:47,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:23:47,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:23:47,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:23:47,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:23:47,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:23:47,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:23:47,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:23:47,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:23:47,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:23:47,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:23:47,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:23:47,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:23:47,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:23:47,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:23:47,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:23:47,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:23:47,285 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:23:47,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:23:47,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:23:47,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:23:47,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:23:47,779 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:23:47,780 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-09-25 03:23:47,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfbdc1cf9/ba2afb10d65c4812824acf7e5ccc9b32/FLAGf51f53075 [2020-09-25 03:23:48,394 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:23:48,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-09-25 03:23:48,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfbdc1cf9/ba2afb10d65c4812824acf7e5ccc9b32/FLAGf51f53075 [2020-09-25 03:23:48,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfbdc1cf9/ba2afb10d65c4812824acf7e5ccc9b32 [2020-09-25 03:23:48,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:23:48,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:23:48,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:23:48,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:23:48,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:23:48,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:23:48" (1/1) ... [2020-09-25 03:23:48,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f7f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:48, skipping insertion in model container [2020-09-25 03:23:48,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:23:48" (1/1) ... [2020-09-25 03:23:48,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:23:48,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:23:49,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:23:49,088 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:23:49,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:23:49,249 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:23:49,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:49 WrapperNode [2020-09-25 03:23:49,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:23:49,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:23:49,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:23:49,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:23:49,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:49" (1/1) ... [2020-09-25 03:23:49,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:49" (1/1) ... [2020-09-25 03:23:49,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:49" (1/1) ... [2020-09-25 03:23:49,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:49" (1/1) ... [2020-09-25 03:23:49,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:49" (1/1) ... [2020-09-25 03:23:49,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:49" (1/1) ... [2020-09-25 03:23:49,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:49" (1/1) ... [2020-09-25 03:23:49,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:23:49,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:23:49,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:23:49,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:23:49,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:49" (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 03:23:49,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:23:49,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:23:49,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:23:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:23:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:23:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:23:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:23:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:23:50,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:23:50,039 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 03:23:50,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:23:50 BoogieIcfgContainer [2020-09-25 03:23:50,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:23:50,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:23:50,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:23:50,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:23:50,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:23:48" (1/3) ... [2020-09-25 03:23:50,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349e3112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:23:50, skipping insertion in model container [2020-09-25 03:23:50,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:49" (2/3) ... [2020-09-25 03:23:50,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349e3112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:23:50, skipping insertion in model container [2020-09-25 03:23:50,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:23:50" (3/3) ... [2020-09-25 03:23:50,059 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-09-25 03:23:50,073 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:23:50,084 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:23:50,109 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:23:50,146 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:23:50,146 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:23:50,147 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:23:50,147 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:23:50,147 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:23:50,147 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:23:50,147 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:23:50,148 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:23:50,179 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-09-25 03:23:50,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 03:23:50,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:50,191 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] [2020-09-25 03:23:50,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:50,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:50,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1507146259, now seen corresponding path program 1 times [2020-09-25 03:23:50,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:50,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413457744] [2020-09-25 03:23:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:50,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:50,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:50,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 03:23:50,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:50,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 03:23:50,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 03:23:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:50,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 03:23:50,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:50,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:50,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:50,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:23:50,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 03:23:50,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:50,576 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 03:23:50,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413457744] [2020-09-25 03:23:50,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:50,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:23:50,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835751600] [2020-09-25 03:23:50,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:23:50,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:50,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:23:50,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:23:50,611 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 3 states. [2020-09-25 03:23:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:50,709 INFO L93 Difference]: Finished difference Result 369 states and 507 transitions. [2020-09-25 03:23:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:23:50,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-25 03:23:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:50,731 INFO L225 Difference]: With dead ends: 369 [2020-09-25 03:23:50,732 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 03:23:50,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:23:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 03:23:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-25 03:23:50,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 03:23:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 213 transitions. [2020-09-25 03:23:50,802 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 213 transitions. Word has length 22 [2020-09-25 03:23:50,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:50,803 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 213 transitions. [2020-09-25 03:23:50,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:23:50,803 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 213 transitions. [2020-09-25 03:23:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 03:23:50,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:50,805 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] [2020-09-25 03:23:50,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:23:50,805 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:50,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:50,808 INFO L82 PathProgramCache]: Analyzing trace with hash -946920198, now seen corresponding path program 1 times [2020-09-25 03:23:50,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:50,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296390303] [2020-09-25 03:23:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:50,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:50,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:50,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:50,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 03:23:50,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:23:50,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 03:23:50,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:23:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:23:50,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:23:51,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:51,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:51,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:51,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:23:51,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:51,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:23:51,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:51,045 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 03:23:51,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296390303] [2020-09-25 03:23:51,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:51,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:23:51,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151237951] [2020-09-25 03:23:51,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:23:51,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:51,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:23:51,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:23:51,050 INFO L87 Difference]: Start difference. First operand 178 states and 213 transitions. Second operand 4 states. [2020-09-25 03:23:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:51,605 INFO L93 Difference]: Finished difference Result 496 states and 601 transitions. [2020-09-25 03:23:51,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:23:51,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-25 03:23:51,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:51,610 INFO L225 Difference]: With dead ends: 496 [2020-09-25 03:23:51,611 INFO L226 Difference]: Without dead ends: 307 [2020-09-25 03:23:51,613 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 03:23:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-25 03:23:51,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 270. [2020-09-25 03:23:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-25 03:23:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 323 transitions. [2020-09-25 03:23:51,639 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 323 transitions. Word has length 23 [2020-09-25 03:23:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:51,640 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 323 transitions. [2020-09-25 03:23:51,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:23:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 323 transitions. [2020-09-25 03:23:51,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 03:23:51,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:51,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:23:51,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:23:51,643 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:51,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:51,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1459950525, now seen corresponding path program 1 times [2020-09-25 03:23:51,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:51,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978212705] [2020-09-25 03:23:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:51,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:51,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 03:23:51,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:23:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 03:23:51,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:51,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:51,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:23:51,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:23:51,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:51,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:51,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:51,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:23:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:23:51,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:51,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:51,771 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 03:23:51,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978212705] [2020-09-25 03:23:51,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:51,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:23:51,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010346173] [2020-09-25 03:23:51,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:23:51,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:51,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:23:51,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:23:51,774 INFO L87 Difference]: Start difference. First operand 270 states and 323 transitions. Second operand 4 states. [2020-09-25 03:23:52,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:52,190 INFO L93 Difference]: Finished difference Result 541 states and 657 transitions. [2020-09-25 03:23:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:23:52,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-09-25 03:23:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:52,194 INFO L225 Difference]: With dead ends: 541 [2020-09-25 03:23:52,194 INFO L226 Difference]: Without dead ends: 284 [2020-09-25 03:23:52,196 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 03:23:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-25 03:23:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2020-09-25 03:23:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 03:23:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 327 transitions. [2020-09-25 03:23:52,217 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 327 transitions. Word has length 31 [2020-09-25 03:23:52,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:52,218 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 327 transitions. [2020-09-25 03:23:52,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:23:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 327 transitions. [2020-09-25 03:23:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 03:23:52,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:52,220 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:23:52,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:23:52,221 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:52,221 INFO L82 PathProgramCache]: Analyzing trace with hash -47890514, now seen corresponding path program 1 times [2020-09-25 03:23:52,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:52,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59847801] [2020-09-25 03:23:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:52,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:52,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:52,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:23:52,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:23:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 03:23:52,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 03:23:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:23:52,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:52,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:52,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:52,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:52,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:23:52,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:23:52,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:52,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:23:52,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59847801] [2020-09-25 03:23:52,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:52,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:23:52,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324978360] [2020-09-25 03:23:52,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:23:52,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:52,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:23:52,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:23:52,357 INFO L87 Difference]: Start difference. First operand 274 states and 327 transitions. Second operand 4 states. [2020-09-25 03:23:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:52,685 INFO L93 Difference]: Finished difference Result 486 states and 586 transitions. [2020-09-25 03:23:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:23:52,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-25 03:23:52,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:52,688 INFO L225 Difference]: With dead ends: 486 [2020-09-25 03:23:52,689 INFO L226 Difference]: Without dead ends: 225 [2020-09-25 03:23:52,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:23:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-09-25 03:23:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2020-09-25 03:23:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-09-25 03:23:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 267 transitions. [2020-09-25 03:23:52,705 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 267 transitions. Word has length 40 [2020-09-25 03:23:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:52,706 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 267 transitions. [2020-09-25 03:23:52,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:23:52,706 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 267 transitions. [2020-09-25 03:23:52,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 03:23:52,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:52,708 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:23:52,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:23:52,708 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:52,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:52,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1667007108, now seen corresponding path program 1 times [2020-09-25 03:23:52,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:52,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832964383] [2020-09-25 03:23:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:52,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:52,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 03:23:52,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:52,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 03:23:52,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:52,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 03:23:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:23:52,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:52,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:52,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:52,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:23:52,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:23:52,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:23:52,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832964383] [2020-09-25 03:23:52,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:52,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:23:52,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956924012] [2020-09-25 03:23:52,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:23:52,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:52,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:23:52,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:23:52,875 INFO L87 Difference]: Start difference. First operand 223 states and 267 transitions. Second operand 4 states. [2020-09-25 03:23:53,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:53,118 INFO L93 Difference]: Finished difference Result 384 states and 461 transitions. [2020-09-25 03:23:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:23:53,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 03:23:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:53,121 INFO L225 Difference]: With dead ends: 384 [2020-09-25 03:23:53,122 INFO L226 Difference]: Without dead ends: 174 [2020-09-25 03:23:53,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:23:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-25 03:23:53,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-25 03:23:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 03:23:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 204 transitions. [2020-09-25 03:23:53,148 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 204 transitions. Word has length 43 [2020-09-25 03:23:53,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:53,151 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 204 transitions. [2020-09-25 03:23:53,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:23:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 204 transitions. [2020-09-25 03:23:53,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:23:53,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:53,163 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:23:53,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:23:53,164 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:53,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:53,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1459500481, now seen corresponding path program 1 times [2020-09-25 03:23:53,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:53,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383955398] [2020-09-25 03:23:53,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:53,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:53,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 03:23:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 03:23:53,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 03:23:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:23:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:53,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:53,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:53,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:53,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:23:53,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:23:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:23:53,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383955398] [2020-09-25 03:23:53,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:53,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:23:53,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449108991] [2020-09-25 03:23:53,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:23:53,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:53,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:23:53,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:23:53,332 INFO L87 Difference]: Start difference. First operand 174 states and 204 transitions. Second operand 4 states. [2020-09-25 03:23:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:53,829 INFO L93 Difference]: Finished difference Result 372 states and 446 transitions. [2020-09-25 03:23:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:23:53,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-25 03:23:53,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:53,832 INFO L225 Difference]: With dead ends: 372 [2020-09-25 03:23:53,832 INFO L226 Difference]: Without dead ends: 264 [2020-09-25 03:23:53,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:23:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-09-25 03:23:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 239. [2020-09-25 03:23:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-25 03:23:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 282 transitions. [2020-09-25 03:23:53,845 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 282 transitions. Word has length 51 [2020-09-25 03:23:53,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:53,846 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 282 transitions. [2020-09-25 03:23:53,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:23:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 282 transitions. [2020-09-25 03:23:53,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:23:53,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:53,849 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:23:53,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:23:53,849 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:53,850 INFO L82 PathProgramCache]: Analyzing trace with hash -389028907, now seen corresponding path program 1 times [2020-09-25 03:23:53,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:53,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649192159] [2020-09-25 03:23:53,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:53,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:54,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:54,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:23:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:23:54,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 03:23:54,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 03:23:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:23:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:54,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:54,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:54,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:23:54,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:23:54,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:23:54,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649192159] [2020-09-25 03:23:54,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:54,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:23:54,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087889365] [2020-09-25 03:23:54,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:23:54,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:54,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:23:54,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:23:54,125 INFO L87 Difference]: Start difference. First operand 239 states and 282 transitions. Second operand 4 states. [2020-09-25 03:23:54,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:54,320 INFO L93 Difference]: Finished difference Result 389 states and 463 transitions. [2020-09-25 03:23:54,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:23:54,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-25 03:23:54,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:54,323 INFO L225 Difference]: With dead ends: 389 [2020-09-25 03:23:54,324 INFO L226 Difference]: Without dead ends: 219 [2020-09-25 03:23:54,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:23:54,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-25 03:23:54,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2020-09-25 03:23:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-25 03:23:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 254 transitions. [2020-09-25 03:23:54,337 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 254 transitions. Word has length 52 [2020-09-25 03:23:54,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:54,338 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 254 transitions. [2020-09-25 03:23:54,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:23:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 254 transitions. [2020-09-25 03:23:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 03:23:54,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:54,340 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:23:54,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:23:54,340 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:54,341 INFO L82 PathProgramCache]: Analyzing trace with hash 910217494, now seen corresponding path program 1 times [2020-09-25 03:23:54,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:54,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482727964] [2020-09-25 03:23:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:54,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:54,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:54,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 03:23:54,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 03:23:54,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 03:23:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:23:54,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:54,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:54,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:23:54,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:54,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:23:54,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:23:54,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482727964] [2020-09-25 03:23:54,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:54,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:23:54,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357670498] [2020-09-25 03:23:54,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:23:54,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:54,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:23:54,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:23:54,486 INFO L87 Difference]: Start difference. First operand 217 states and 254 transitions. Second operand 4 states. [2020-09-25 03:23:54,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:54,693 INFO L93 Difference]: Finished difference Result 322 states and 377 transitions. [2020-09-25 03:23:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:23:54,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 03:23:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:54,695 INFO L225 Difference]: With dead ends: 322 [2020-09-25 03:23:54,695 INFO L226 Difference]: Without dead ends: 174 [2020-09-25 03:23:54,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:23:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-25 03:23:54,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-25 03:23:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 03:23:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2020-09-25 03:23:54,707 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 54 [2020-09-25 03:23:54,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:54,708 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2020-09-25 03:23:54,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:23:54,709 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2020-09-25 03:23:54,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 03:23:54,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:54,710 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:23:54,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:23:54,710 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:54,711 INFO L82 PathProgramCache]: Analyzing trace with hash 57784286, now seen corresponding path program 1 times [2020-09-25 03:23:54,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:54,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941227864] [2020-09-25 03:23:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:54,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:54,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:54,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 03:23:54,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 03:23:54,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 03:23:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:23:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:54,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:54,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:54,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:54,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:23:54,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:23:54,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:54,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:54,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:54,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:54,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:23:54,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941227864] [2020-09-25 03:23:54,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:54,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:23:54,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289787566] [2020-09-25 03:23:54,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:23:54,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:54,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:23:54,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:23:54,874 INFO L87 Difference]: Start difference. First operand 174 states and 198 transitions. Second operand 4 states. [2020-09-25 03:23:55,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:55,099 INFO L93 Difference]: Finished difference Result 176 states and 199 transitions. [2020-09-25 03:23:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:23:55,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 03:23:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:55,101 INFO L225 Difference]: With dead ends: 176 [2020-09-25 03:23:55,101 INFO L226 Difference]: Without dead ends: 171 [2020-09-25 03:23:55,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:23:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-25 03:23:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-25 03:23:55,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-25 03:23:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 194 transitions. [2020-09-25 03:23:55,108 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 194 transitions. Word has length 55 [2020-09-25 03:23:55,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:55,109 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 194 transitions. [2020-09-25 03:23:55,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:23:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 194 transitions. [2020-09-25 03:23:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 03:23:55,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:55,110 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:23:55,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:23:55,111 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:55,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1987485698, now seen corresponding path program 1 times [2020-09-25 03:23:55,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:55,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818308952] [2020-09-25 03:23:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:55,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:55,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:55,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 03:23:55,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 03:23:55,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 03:23:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:23:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:55,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:55,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:55,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:23:55,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:55,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:23:55,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:23:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:23:55,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:23:55,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818308952] [2020-09-25 03:23:55,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:55,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:23:55,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526568058] [2020-09-25 03:23:55,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:23:55,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:55,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:23:55,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:23:55,233 INFO L87 Difference]: Start difference. First operand 171 states and 194 transitions. Second operand 4 states. [2020-09-25 03:23:55,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:55,465 INFO L93 Difference]: Finished difference Result 263 states and 301 transitions. [2020-09-25 03:23:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:23:55,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-25 03:23:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:55,466 INFO L225 Difference]: With dead ends: 263 [2020-09-25 03:23:55,466 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:23:55,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:23:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:23:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:23:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:23:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:23:55,467 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-09-25 03:23:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:55,467 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:23:55,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:23:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:23:55,468 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:23:55,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:23:55,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:23:55,739 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:23:55,740 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 03:23:55,740 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|)) [2020-09-25 03:23:55,740 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 03:23:55,741 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 03:23:55,741 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 03:23:55,741 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 03:23:55,741 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:23:55,741 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:23:55,741 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 03:23:55,741 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 03:23:55,742 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:23:55,742 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-09-25 03:23:55,742 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-09-25 03:23:55,742 INFO L268 CegarLoopResult]: For program point L300(line 300) no Hoare annotation was computed. [2020-09-25 03:23:55,742 INFO L268 CegarLoopResult]: For program point L300-1(lines 300 315) no Hoare annotation was computed. [2020-09-25 03:23:55,742 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-09-25 03:23:55,743 INFO L268 CegarLoopResult]: For program point L300-2(line 300) no Hoare annotation was computed. [2020-09-25 03:23:55,743 INFO L268 CegarLoopResult]: For program point L300-3(line 300) no Hoare annotation was computed. [2020-09-25 03:23:55,743 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-09-25 03:23:55,743 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-09-25 03:23:55,743 INFO L268 CegarLoopResult]: For program point L268(line 268) no Hoare annotation was computed. [2020-09-25 03:23:55,743 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-09-25 03:23:55,743 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-09-25 03:23:55,743 INFO L268 CegarLoopResult]: For program point L368(line 368) no Hoare annotation was computed. [2020-09-25 03:23:55,744 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-09-25 03:23:55,744 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-09-25 03:23:55,744 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-09-25 03:23:55,744 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 03:23:55,744 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-09-25 03:23:55,744 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-09-25 03:23:55,744 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-09-25 03:23:55,745 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-09-25 03:23:55,745 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-09-25 03:23:55,745 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 03:23:55,745 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-09-25 03:23:55,745 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-09-25 03:23:55,745 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-09-25 03:23:55,746 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-25 03:23:55,746 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-09-25 03:23:55,746 INFO L268 CegarLoopResult]: For program point L174(line 174) no Hoare annotation was computed. [2020-09-25 03:23:55,746 INFO L268 CegarLoopResult]: For program point L274(line 274) no Hoare annotation was computed. [2020-09-25 03:23:55,746 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-09-25 03:23:55,746 INFO L268 CegarLoopResult]: For program point L374(line 374) no Hoare annotation was computed. [2020-09-25 03:23:55,746 INFO L268 CegarLoopResult]: For program point L242(line 242) no Hoare annotation was computed. [2020-09-25 03:23:55,747 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-25 03:23:55,747 INFO L268 CegarLoopResult]: For program point L342(line 342) no Hoare annotation was computed. [2020-09-25 03:23:55,747 INFO L268 CegarLoopResult]: For program point L276(line 276) no Hoare annotation was computed. [2020-09-25 03:23:55,747 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-09-25 03:23:55,747 INFO L268 CegarLoopResult]: For program point L376(line 376) no Hoare annotation was computed. [2020-09-25 03:23:55,747 INFO L268 CegarLoopResult]: For program point L310(line 310) no Hoare annotation was computed. [2020-09-25 03:23:55,747 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-09-25 03:23:55,748 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-09-25 03:23:55,748 INFO L268 CegarLoopResult]: For program point L344(line 344) no Hoare annotation was computed. [2020-09-25 03:23:55,748 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-09-25 03:23:55,748 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-25 03:23:55,748 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-09-25 03:23:55,748 INFO L268 CegarLoopResult]: For program point L80-1(lines 80 95) no Hoare annotation was computed. [2020-09-25 03:23:55,748 INFO L268 CegarLoopResult]: For program point L80-2(line 80) no Hoare annotation was computed. [2020-09-25 03:23:55,749 INFO L268 CegarLoopResult]: For program point L80-3(line 80) no Hoare annotation was computed. [2020-09-25 03:23:55,749 INFO L268 CegarLoopResult]: For program point L312(line 312) no Hoare annotation was computed. [2020-09-25 03:23:55,749 INFO L268 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-09-25 03:23:55,749 INFO L268 CegarLoopResult]: For program point L48-1(lines 48 63) no Hoare annotation was computed. [2020-09-25 03:23:55,749 INFO L268 CegarLoopResult]: For program point L48-2(line 48) no Hoare annotation was computed. [2020-09-25 03:23:55,749 INFO L268 CegarLoopResult]: For program point L48-3(line 48) no Hoare annotation was computed. [2020-09-25 03:23:55,749 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-25 03:23:55,749 INFO L268 CegarLoopResult]: For program point L148-1(lines 148 163) no Hoare annotation was computed. [2020-09-25 03:23:55,750 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-09-25 03:23:55,750 INFO L268 CegarLoopResult]: For program point L148-2(line 148) no Hoare annotation was computed. [2020-09-25 03:23:55,750 INFO L268 CegarLoopResult]: For program point L148-3(line 148) no Hoare annotation was computed. [2020-09-25 03:23:55,750 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 03:23:55,750 INFO L268 CegarLoopResult]: For program point L248(line 248) no Hoare annotation was computed. [2020-09-25 03:23:55,750 INFO L268 CegarLoopResult]: For program point L248-1(lines 248 263) no Hoare annotation was computed. [2020-09-25 03:23:55,750 INFO L268 CegarLoopResult]: For program point L248-2(line 248) no Hoare annotation was computed. [2020-09-25 03:23:55,751 INFO L268 CegarLoopResult]: For program point L248-3(line 248) no Hoare annotation was computed. [2020-09-25 03:23:55,751 INFO L268 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-09-25 03:23:55,751 INFO L268 CegarLoopResult]: For program point L116-1(lines 116 131) no Hoare annotation was computed. [2020-09-25 03:23:55,751 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-09-25 03:23:55,751 INFO L268 CegarLoopResult]: For program point L116-2(line 116) no Hoare annotation was computed. [2020-09-25 03:23:55,751 INFO L268 CegarLoopResult]: For program point L116-3(line 116) no Hoare annotation was computed. [2020-09-25 03:23:55,751 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= main_~this_state~0 0) (<= main_~q~0 2)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-09-25 03:23:55,752 INFO L268 CegarLoopResult]: For program point L348(line 348) no Hoare annotation was computed. [2020-09-25 03:23:55,752 INFO L268 CegarLoopResult]: For program point L348-1(lines 348 363) no Hoare annotation was computed. [2020-09-25 03:23:55,752 INFO L268 CegarLoopResult]: For program point L348-2(line 348) no Hoare annotation was computed. [2020-09-25 03:23:55,752 INFO L268 CegarLoopResult]: For program point L348-3(line 348) no Hoare annotation was computed. [2020-09-25 03:23:55,752 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-09-25 03:23:55,752 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-09-25 03:23:55,752 INFO L268 CegarLoopResult]: For program point L216-1(lines 216 231) no Hoare annotation was computed. [2020-09-25 03:23:55,752 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-09-25 03:23:55,752 INFO L268 CegarLoopResult]: For program point L216-2(line 216) no Hoare annotation was computed. [2020-09-25 03:23:55,753 INFO L268 CegarLoopResult]: For program point L216-3(line 216) no Hoare annotation was computed. [2020-09-25 03:23:55,753 INFO L268 CegarLoopResult]: For program point L316(line 316) no Hoare annotation was computed. [2020-09-25 03:23:55,753 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-09-25 03:23:55,753 INFO L268 CegarLoopResult]: For program point L316-1(lines 316 331) no Hoare annotation was computed. [2020-09-25 03:23:55,753 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-09-25 03:23:55,753 INFO L268 CegarLoopResult]: For program point L316-2(line 316) no Hoare annotation was computed. [2020-09-25 03:23:55,753 INFO L268 CegarLoopResult]: For program point L316-3(line 316) no Hoare annotation was computed. [2020-09-25 03:23:55,753 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-09-25 03:23:55,753 INFO L268 CegarLoopResult]: For program point L184-1(lines 184 199) no Hoare annotation was computed. [2020-09-25 03:23:55,754 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-09-25 03:23:55,754 INFO L268 CegarLoopResult]: For program point L184-2(line 184) no Hoare annotation was computed. [2020-09-25 03:23:55,754 INFO L268 CegarLoopResult]: For program point L184-3(line 184) no Hoare annotation was computed. [2020-09-25 03:23:55,754 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 03:23:55,754 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-09-25 03:23:55,754 INFO L268 CegarLoopResult]: For program point L284(line 284) no Hoare annotation was computed. [2020-09-25 03:23:55,754 INFO L268 CegarLoopResult]: For program point L284-1(lines 284 299) no Hoare annotation was computed. [2020-09-25 03:23:55,755 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-09-25 03:23:55,755 INFO L268 CegarLoopResult]: For program point L284-2(line 284) no Hoare annotation was computed. [2020-09-25 03:23:55,755 INFO L268 CegarLoopResult]: For program point L284-3(line 284) no Hoare annotation was computed. [2020-09-25 03:23:55,755 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-09-25 03:23:55,755 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-09-25 03:23:55,755 INFO L268 CegarLoopResult]: For program point L252(line 252) no Hoare annotation was computed. [2020-09-25 03:23:55,755 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-09-25 03:23:55,755 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-09-25 03:23:55,756 INFO L268 CegarLoopResult]: For program point L352(line 352) no Hoare annotation was computed. [2020-09-25 03:23:55,756 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-09-25 03:23:55,756 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-09-25 03:23:55,756 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= main_~this_state~0 0) (<= main_~q~0 2)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-09-25 03:23:55,756 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-09-25 03:23:55,756 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-09-25 03:23:55,756 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-09-25 03:23:55,757 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-09-25 03:23:55,757 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-09-25 03:23:55,757 INFO L268 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-09-25 03:23:55,757 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-09-25 03:23:55,757 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-09-25 03:23:55,757 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-25 03:23:55,757 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-09-25 03:23:55,758 INFO L268 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-09-25 03:23:55,758 INFO L268 CegarLoopResult]: For program point L258(line 258) no Hoare annotation was computed. [2020-09-25 03:23:55,758 INFO L268 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-09-25 03:23:55,758 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-09-25 03:23:55,758 INFO L268 CegarLoopResult]: For program point L358(line 358) no Hoare annotation was computed. [2020-09-25 03:23:55,758 INFO L268 CegarLoopResult]: For program point L226(line 226) no Hoare annotation was computed. [2020-09-25 03:23:55,758 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 03:23:55,759 INFO L268 CegarLoopResult]: For program point L28-1(lines 28 43) no Hoare annotation was computed. [2020-09-25 03:23:55,759 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 03:23:55,759 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 03:23:55,759 INFO L268 CegarLoopResult]: For program point L326(line 326) no Hoare annotation was computed. [2020-09-25 03:23:55,759 INFO L268 CegarLoopResult]: For program point L260(line 260) no Hoare annotation was computed. [2020-09-25 03:23:55,759 INFO L268 CegarLoopResult]: For program point L194(line 194) no Hoare annotation was computed. [2020-09-25 03:23:55,759 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-09-25 03:23:55,760 INFO L268 CegarLoopResult]: For program point L360(line 360) no Hoare annotation was computed. [2020-09-25 03:23:55,760 INFO L268 CegarLoopResult]: For program point L294(line 294) no Hoare annotation was computed. [2020-09-25 03:23:55,760 INFO L268 CegarLoopResult]: For program point L228(line 228) no Hoare annotation was computed. [2020-09-25 03:23:55,760 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-09-25 03:23:55,760 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-09-25 03:23:55,760 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-09-25 03:23:55,761 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-25 03:23:55,761 INFO L268 CegarLoopResult]: For program point L64-1(lines 64 79) no Hoare annotation was computed. [2020-09-25 03:23:55,761 INFO L268 CegarLoopResult]: For program point L64-2(line 64) no Hoare annotation was computed. [2020-09-25 03:23:55,761 INFO L268 CegarLoopResult]: For program point L64-3(line 64) no Hoare annotation was computed. [2020-09-25 03:23:55,761 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-09-25 03:23:55,761 INFO L268 CegarLoopResult]: For program point L164(line 164) no Hoare annotation was computed. [2020-09-25 03:23:55,762 INFO L268 CegarLoopResult]: For program point L164-1(lines 164 179) no Hoare annotation was computed. [2020-09-25 03:23:55,762 INFO L268 CegarLoopResult]: For program point L164-2(line 164) no Hoare annotation was computed. [2020-09-25 03:23:55,762 INFO L268 CegarLoopResult]: For program point L164-3(line 164) no Hoare annotation was computed. [2020-09-25 03:23:55,762 INFO L268 CegarLoopResult]: For program point L264(line 264) no Hoare annotation was computed. [2020-09-25 03:23:55,762 INFO L268 CegarLoopResult]: For program point L264-1(lines 264 279) no Hoare annotation was computed. [2020-09-25 03:23:55,762 INFO L268 CegarLoopResult]: For program point L264-2(line 264) no Hoare annotation was computed. [2020-09-25 03:23:55,763 INFO L268 CegarLoopResult]: For program point L264-3(line 264) no Hoare annotation was computed. [2020-09-25 03:23:55,763 INFO L268 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-09-25 03:23:55,763 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-09-25 03:23:55,763 INFO L268 CegarLoopResult]: For program point L132-1(lines 132 147) no Hoare annotation was computed. [2020-09-25 03:23:55,763 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-09-25 03:23:55,764 INFO L268 CegarLoopResult]: For program point L132-2(line 132) no Hoare annotation was computed. [2020-09-25 03:23:55,764 INFO L268 CegarLoopResult]: For program point L132-3(line 132) no Hoare annotation was computed. [2020-09-25 03:23:55,764 INFO L268 CegarLoopResult]: For program point L364(line 364) no Hoare annotation was computed. [2020-09-25 03:23:55,764 INFO L268 CegarLoopResult]: For program point L364-1(lines 364 379) no Hoare annotation was computed. [2020-09-25 03:23:55,764 INFO L268 CegarLoopResult]: For program point L364-2(line 364) no Hoare annotation was computed. [2020-09-25 03:23:55,765 INFO L268 CegarLoopResult]: For program point L364-3(line 364) no Hoare annotation was computed. [2020-09-25 03:23:55,765 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-09-25 03:23:55,765 INFO L268 CegarLoopResult]: For program point L232-1(lines 232 247) no Hoare annotation was computed. [2020-09-25 03:23:55,765 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-09-25 03:23:55,765 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-09-25 03:23:55,766 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-09-25 03:23:55,766 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-25 03:23:55,766 INFO L268 CegarLoopResult]: For program point L100-1(lines 100 115) no Hoare annotation was computed. [2020-09-25 03:23:55,766 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-25 03:23:55,766 INFO L268 CegarLoopResult]: For program point L100-2(line 100) no Hoare annotation was computed. [2020-09-25 03:23:55,767 INFO L268 CegarLoopResult]: For program point L100-3(line 100) no Hoare annotation was computed. [2020-09-25 03:23:55,767 INFO L268 CegarLoopResult]: For program point L332(line 332) no Hoare annotation was computed. [2020-09-25 03:23:55,767 INFO L268 CegarLoopResult]: For program point L332-1(lines 332 347) no Hoare annotation was computed. [2020-09-25 03:23:55,767 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-09-25 03:23:55,767 INFO L268 CegarLoopResult]: For program point L332-2(line 332) no Hoare annotation was computed. [2020-09-25 03:23:55,767 INFO L268 CegarLoopResult]: For program point L332-3(line 332) no Hoare annotation was computed. [2020-09-25 03:23:55,768 INFO L268 CegarLoopResult]: For program point L200(line 200) no Hoare annotation was computed. [2020-09-25 03:23:55,768 INFO L268 CegarLoopResult]: For program point L200-1(lines 200 215) no Hoare annotation was computed. [2020-09-25 03:23:55,768 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-09-25 03:23:55,768 INFO L268 CegarLoopResult]: For program point L200-2(line 200) no Hoare annotation was computed. [2020-09-25 03:23:55,768 INFO L268 CegarLoopResult]: For program point L200-3(line 200) no Hoare annotation was computed. [2020-09-25 03:23:55,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:23:55 BoogieIcfgContainer [2020-09-25 03:23:55,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:23:55,798 INFO L168 Benchmark]: Toolchain (without parser) took 7069.26 ms. Allocated memory was 140.0 MB in the beginning and 283.1 MB in the end (delta: 143.1 MB). Free memory was 102.9 MB in the beginning and 204.8 MB in the end (delta: -101.9 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:23:55,799 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:23:55,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.72 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 180.8 MB in the end (delta: -78.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-25 03:23:55,801 INFO L168 Benchmark]: Boogie Preprocessor took 50.14 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:23:55,802 INFO L168 Benchmark]: RCFGBuilder took 746.09 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 142.8 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:23:55,806 INFO L168 Benchmark]: TraceAbstraction took 5745.20 ms. Allocated memory was 202.9 MB in the beginning and 283.1 MB in the end (delta: 80.2 MB). Free memory was 142.1 MB in the beginning and 204.8 MB in the end (delta: -62.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:23:55,810 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 514.72 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 180.8 MB in the end (delta: -78.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.14 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 746.09 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 142.8 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5745.20 ms. Allocated memory was 202.9 MB in the beginning and 283.1 MB in the end (delta: 80.2 MB). Free memory was 142.1 MB in the beginning and 204.8 MB in the end (delta: -62.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: 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: 22]: Loop Invariant Derived loop invariant: ((q <= 0 || ((3 <= q && 2 == this_state) && q <= 3)) || (this_state <= 0 && q <= 2)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((q <= 0 || ((3 <= q && 2 == this_state) && q <= 3)) || (this_state <= 0 && q <= 2)) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 191 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1908 SDtfs, 2810 SDslu, 111 SDs, 0 SdLazy, 1268 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=3, 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, 10 MinimizatonAttempts, 76 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 15 NumberOfFragments, 79 HoareAnnotationTreeSize, 7 FomulaSimplifications, 90 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 194 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 35473 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 49/49 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...