/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_14-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:43:44,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:43:44,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:43:44,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:43:44,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:43:44,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:43:44,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:43:44,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:43:44,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:43:44,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:43:44,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:43:44,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:43:44,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:43:44,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:43:44,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:43:44,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:43:44,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:43:44,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:43:44,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:43:44,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:43:44,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:43:44,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:43:44,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:43:44,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:43:44,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:43:44,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:43:44,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:43:44,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:43:44,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:43:44,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:43:44,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:43:44,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:43:44,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:43:44,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:43:44,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:43:44,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:43:44,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:43:44,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:43:44,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:43:44,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:43:44,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:43:44,274 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 [2020-10-14 23:43:44,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:43:44,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:43:44,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:43:44,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:43:44,304 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:43:44,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:43:44,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:43:44,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:43:44,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:43:44,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:43:44,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:43:44,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:43:44,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:43:44,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:43:44,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:43:44,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:43:44,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:43:44,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:43:44,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:43:44,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:43:44,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:43:44,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:43:44,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:43:44,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:43:44,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:43:44,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:43:44,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:43:44,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:43:44,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:43:44,313 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:43:44,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:43:44,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:43:44,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:43:44,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:43:44,698 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:43:44,699 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-1.c [2020-10-14 23:43:44,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e708ab9c/f84f2741c6c74ba5a898992e35a4bd47/FLAGb4c19ec5a [2020-10-14 23:43:45,244 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:43:45,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_14-1.c [2020-10-14 23:43:45,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e708ab9c/f84f2741c6c74ba5a898992e35a4bd47/FLAGb4c19ec5a [2020-10-14 23:43:45,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e708ab9c/f84f2741c6c74ba5a898992e35a4bd47 [2020-10-14 23:43:45,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:43:45,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:43:45,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:43:45,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:43:45,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:43:45,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:45" (1/1) ... [2020-10-14 23:43:45,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39062356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45, skipping insertion in model container [2020-10-14 23:43:45,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:45" (1/1) ... [2020-10-14 23:43:45,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:43:45,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:43:45,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:43:45,883 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:43:45,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:43:45,945 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:43:45,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45 WrapperNode [2020-10-14 23:43:45,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:43:45,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:43:45,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:43:45,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:43:46,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45" (1/1) ... [2020-10-14 23:43:46,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45" (1/1) ... [2020-10-14 23:43:46,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45" (1/1) ... [2020-10-14 23:43:46,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45" (1/1) ... [2020-10-14 23:43:46,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45" (1/1) ... [2020-10-14 23:43:46,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45" (1/1) ... [2020-10-14 23:43:46,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45" (1/1) ... [2020-10-14 23:43:46,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:43:46,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:43:46,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:43:46,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:43:46,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45" (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 [2020-10-14 23:43:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:43:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:43:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:43:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:43:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:43:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:43:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:43:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:43:46,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:43:46,554 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:43:46,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:46 BoogieIcfgContainer [2020-10-14 23:43:46,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:43:46,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:43:46,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:43:46,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:43:46,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:43:45" (1/3) ... [2020-10-14 23:43:46,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78149738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:46, skipping insertion in model container [2020-10-14 23:43:46,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:45" (2/3) ... [2020-10-14 23:43:46,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78149738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:46, skipping insertion in model container [2020-10-14 23:43:46,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:46" (3/3) ... [2020-10-14 23:43:46,574 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-1.c [2020-10-14 23:43:46,587 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:43:46,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:43:46,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:43:46,646 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:43:46,646 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:43:46,646 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:43:46,647 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:43:46,647 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:43:46,647 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:43:46,648 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:43:46,648 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:43:46,673 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-14 23:43:46,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:43:46,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:46,686 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] [2020-10-14 23:43:46,686 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:46,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1694520263, now seen corresponding path program 1 times [2020-10-14 23:43:46,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:46,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693189944] [2020-10-14 23:43:46,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:46,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:47,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:47,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:43:47,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:47,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 23:43:47,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:47,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:43:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:43:47,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 23:43:47,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:47,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:47,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:47,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:47,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:43:47,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:47,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:47,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693189944] [2020-10-14 23:43:47,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:47,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:47,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332264997] [2020-10-14 23:43:47,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:47,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:47,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:47,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:47,219 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-10-14 23:43:47,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:47,293 INFO L93 Difference]: Finished difference Result 111 states and 198 transitions. [2020-10-14 23:43:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:47,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 23:43:47,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:47,318 INFO L225 Difference]: With dead ends: 111 [2020-10-14 23:43:47,318 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 23:43:47,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 23:43:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 66. [2020-10-14 23:43:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 23:43:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 121 transitions. [2020-10-14 23:43:47,378 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 121 transitions. Word has length 24 [2020-10-14 23:43:47,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:47,379 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 121 transitions. [2020-10-14 23:43:47,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 121 transitions. [2020-10-14 23:43:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:43:47,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:47,381 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] [2020-10-14 23:43:47,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:43:47,382 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:47,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:47,382 INFO L82 PathProgramCache]: Analyzing trace with hash 106172361, now seen corresponding path program 1 times [2020-10-14 23:43:47,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:47,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585770117] [2020-10-14 23:43:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:47,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:47,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:43:47,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 23:43:47,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:47,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:43:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:47,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:47,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:47,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:47,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:47,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:47,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:47,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:47,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:47,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:47,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:47,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585770117] [2020-10-14 23:43:47,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:47,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:47,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916863326] [2020-10-14 23:43:47,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:47,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:47,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:47,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:47,643 INFO L87 Difference]: Start difference. First operand 66 states and 121 transitions. Second operand 3 states. [2020-10-14 23:43:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:47,678 INFO L93 Difference]: Finished difference Result 157 states and 292 transitions. [2020-10-14 23:43:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:47,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 23:43:47,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:47,682 INFO L225 Difference]: With dead ends: 157 [2020-10-14 23:43:47,682 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 23:43:47,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:47,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 23:43:47,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-14 23:43:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-14 23:43:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 173 transitions. [2020-10-14 23:43:47,700 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 173 transitions. Word has length 24 [2020-10-14 23:43:47,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:47,701 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 173 transitions. [2020-10-14 23:43:47,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 173 transitions. [2020-10-14 23:43:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:43:47,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:47,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:47,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:43:47,704 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:47,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:47,704 INFO L82 PathProgramCache]: Analyzing trace with hash 990732685, now seen corresponding path program 1 times [2020-10-14 23:43:47,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:47,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933999342] [2020-10-14 23:43:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:47,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:47,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:47,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:47,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:43:47,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 23:43:47,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:47,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:43:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:43:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:47,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:47,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:47,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:47,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:47,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:47,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:47,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:47,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933999342] [2020-10-14 23:43:47,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:47,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:47,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505902922] [2020-10-14 23:43:47,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:47,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:47,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:47,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:47,868 INFO L87 Difference]: Start difference. First operand 94 states and 173 transitions. Second operand 3 states. [2020-10-14 23:43:47,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:47,898 INFO L93 Difference]: Finished difference Result 181 states and 335 transitions. [2020-10-14 23:43:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:47,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 23:43:47,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:47,902 INFO L225 Difference]: With dead ends: 181 [2020-10-14 23:43:47,902 INFO L226 Difference]: Without dead ends: 179 [2020-10-14 23:43:47,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-14 23:43:47,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-10-14 23:43:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 23:43:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 231 transitions. [2020-10-14 23:43:47,920 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 231 transitions. Word has length 25 [2020-10-14 23:43:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:47,920 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 231 transitions. [2020-10-14 23:43:47,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 231 transitions. [2020-10-14 23:43:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:43:47,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:47,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:47,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:43:47,923 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:47,923 INFO L82 PathProgramCache]: Analyzing trace with hash -597615217, now seen corresponding path program 1 times [2020-10-14 23:43:47,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:47,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599617092] [2020-10-14 23:43:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:47,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:47,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:48,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:43:48,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:48,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 23:43:48,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:48,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:48,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:48,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:43:48,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:48,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:48,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:48,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:48,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:48,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:48,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:48,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:48,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:48,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:48,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599617092] [2020-10-14 23:43:48,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:48,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:48,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196692302] [2020-10-14 23:43:48,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:48,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:48,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:48,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:48,043 INFO L87 Difference]: Start difference. First operand 125 states and 231 transitions. Second operand 3 states. [2020-10-14 23:43:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:48,065 INFO L93 Difference]: Finished difference Result 301 states and 561 transitions. [2020-10-14 23:43:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:48,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 23:43:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:48,068 INFO L225 Difference]: With dead ends: 301 [2020-10-14 23:43:48,068 INFO L226 Difference]: Without dead ends: 181 [2020-10-14 23:43:48,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-14 23:43:48,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-10-14 23:43:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 23:43:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 330 transitions. [2020-10-14 23:43:48,095 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 330 transitions. Word has length 25 [2020-10-14 23:43:48,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:48,096 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 330 transitions. [2020-10-14 23:43:48,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 330 transitions. [2020-10-14 23:43:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:43:48,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:48,098 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] [2020-10-14 23:43:48,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:43:48,098 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash 648154588, now seen corresponding path program 1 times [2020-10-14 23:43:48,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:48,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204465545] [2020-10-14 23:43:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:48,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:48,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:43:48,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 23:43:48,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:48,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:43:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:48,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:48,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:48,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:48,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:48,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:48,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:48,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:48,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:48,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204465545] [2020-10-14 23:43:48,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:48,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:48,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733625423] [2020-10-14 23:43:48,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:48,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:48,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:48,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:48,362 INFO L87 Difference]: Start difference. First operand 179 states and 330 transitions. Second operand 3 states. [2020-10-14 23:43:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:48,396 INFO L93 Difference]: Finished difference Result 273 states and 499 transitions. [2020-10-14 23:43:48,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:48,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:43:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:48,399 INFO L225 Difference]: With dead ends: 273 [2020-10-14 23:43:48,399 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 23:43:48,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 23:43:48,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-10-14 23:43:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 23:43:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 334 transitions. [2020-10-14 23:43:48,415 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 334 transitions. Word has length 26 [2020-10-14 23:43:48,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:48,416 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 334 transitions. [2020-10-14 23:43:48,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:48,416 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 334 transitions. [2020-10-14 23:43:48,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:43:48,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:48,418 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] [2020-10-14 23:43:48,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:43:48,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:48,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:48,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1345990118, now seen corresponding path program 1 times [2020-10-14 23:43:48,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:48,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593907783] [2020-10-14 23:43:48,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:48,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:43:48,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 23:43:48,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:48,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:43:48,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:43:48,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:48,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:48,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:48,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:48,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:48,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:48,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593907783] [2020-10-14 23:43:48,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:48,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:48,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367548495] [2020-10-14 23:43:48,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:48,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:48,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:48,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:48,560 INFO L87 Difference]: Start difference. First operand 184 states and 334 transitions. Second operand 3 states. [2020-10-14 23:43:48,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:48,586 INFO L93 Difference]: Finished difference Result 348 states and 638 transitions. [2020-10-14 23:43:48,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:48,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:43:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:48,591 INFO L225 Difference]: With dead ends: 348 [2020-10-14 23:43:48,592 INFO L226 Difference]: Without dead ends: 346 [2020-10-14 23:43:48,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-14 23:43:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 248. [2020-10-14 23:43:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-14 23:43:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 448 transitions. [2020-10-14 23:43:48,627 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 448 transitions. Word has length 26 [2020-10-14 23:43:48,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:48,627 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 448 transitions. [2020-10-14 23:43:48,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:48,628 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 448 transitions. [2020-10-14 23:43:48,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:43:48,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:48,630 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] [2020-10-14 23:43:48,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:43:48,631 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:48,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:48,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1360629276, now seen corresponding path program 1 times [2020-10-14 23:43:48,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:48,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159886474] [2020-10-14 23:43:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:48,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:48,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:43:48,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:48,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:43:48,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:48,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:43:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:48,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:48,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:48,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:48,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:48,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:48,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:48,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:48,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159886474] [2020-10-14 23:43:48,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:48,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:48,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606934905] [2020-10-14 23:43:48,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:48,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:48,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:48,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:48,718 INFO L87 Difference]: Start difference. First operand 248 states and 448 transitions. Second operand 3 states. [2020-10-14 23:43:48,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:48,744 INFO L93 Difference]: Finished difference Result 592 states and 1078 transitions. [2020-10-14 23:43:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:48,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:43:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:48,747 INFO L225 Difference]: With dead ends: 592 [2020-10-14 23:43:48,748 INFO L226 Difference]: Without dead ends: 354 [2020-10-14 23:43:48,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:48,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-14 23:43:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2020-10-14 23:43:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-14 23:43:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 634 transitions. [2020-10-14 23:43:48,765 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 634 transitions. Word has length 26 [2020-10-14 23:43:48,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:48,765 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 634 transitions. [2020-10-14 23:43:48,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:48,766 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 634 transitions. [2020-10-14 23:43:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:43:48,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:48,768 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] [2020-10-14 23:43:48,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:43:48,768 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:48,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1224192068, now seen corresponding path program 1 times [2020-10-14 23:43:48,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:48,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753893379] [2020-10-14 23:43:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:48,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:43:48,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 23:43:48,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:48,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:43:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:48,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:48,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:48,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:48,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:48,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:48,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753893379] [2020-10-14 23:43:48,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:48,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:48,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963802996] [2020-10-14 23:43:48,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:48,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:48,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:48,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:48,919 INFO L87 Difference]: Start difference. First operand 352 states and 634 transitions. Second operand 3 states. [2020-10-14 23:43:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:48,939 INFO L93 Difference]: Finished difference Result 528 states and 948 transitions. [2020-10-14 23:43:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:48,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:43:48,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:48,943 INFO L225 Difference]: With dead ends: 528 [2020-10-14 23:43:48,943 INFO L226 Difference]: Without dead ends: 358 [2020-10-14 23:43:48,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-14 23:43:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-10-14 23:43:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-14 23:43:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 634 transitions. [2020-10-14 23:43:48,958 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 634 transitions. Word has length 27 [2020-10-14 23:43:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:48,959 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 634 transitions. [2020-10-14 23:43:48,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 634 transitions. [2020-10-14 23:43:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:43:48,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:48,961 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] [2020-10-14 23:43:48,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:43:48,961 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:48,962 INFO L82 PathProgramCache]: Analyzing trace with hash -769952638, now seen corresponding path program 1 times [2020-10-14 23:43:48,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:48,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932111396] [2020-10-14 23:43:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:43:49,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:49,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:43:49,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:43:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:49,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:49,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:43:49,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:49,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932111396] [2020-10-14 23:43:49,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:49,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:49,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013948647] [2020-10-14 23:43:49,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:49,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:49,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:49,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,048 INFO L87 Difference]: Start difference. First operand 356 states and 634 transitions. Second operand 3 states. [2020-10-14 23:43:49,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:49,068 INFO L93 Difference]: Finished difference Result 528 states and 936 transitions. [2020-10-14 23:43:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:49,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:43:49,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:49,071 INFO L225 Difference]: With dead ends: 528 [2020-10-14 23:43:49,071 INFO L226 Difference]: Without dead ends: 358 [2020-10-14 23:43:49,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-14 23:43:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-10-14 23:43:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-14 23:43:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 626 transitions. [2020-10-14 23:43:49,085 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 626 transitions. Word has length 27 [2020-10-14 23:43:49,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:49,085 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 626 transitions. [2020-10-14 23:43:49,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 626 transitions. [2020-10-14 23:43:49,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:43:49,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:49,087 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] [2020-10-14 23:43:49,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:43:49,088 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:49,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1587601088, now seen corresponding path program 1 times [2020-10-14 23:43:49,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:49,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662151363] [2020-10-14 23:43:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:43:49,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:49,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 23:43:49,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:43:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:43:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:49,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:49,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:49,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662151363] [2020-10-14 23:43:49,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:49,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:49,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428111410] [2020-10-14 23:43:49,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:49,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:49,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:49,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,154 INFO L87 Difference]: Start difference. First operand 356 states and 626 transitions. Second operand 3 states. [2020-10-14 23:43:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:49,178 INFO L93 Difference]: Finished difference Result 668 states and 1192 transitions. [2020-10-14 23:43:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:49,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:43:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:49,183 INFO L225 Difference]: With dead ends: 668 [2020-10-14 23:43:49,183 INFO L226 Difference]: Without dead ends: 666 [2020-10-14 23:43:49,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-10-14 23:43:49,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 488. [2020-10-14 23:43:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-14 23:43:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 846 transitions. [2020-10-14 23:43:49,211 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 846 transitions. Word has length 27 [2020-10-14 23:43:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:49,211 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 846 transitions. [2020-10-14 23:43:49,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 846 transitions. [2020-10-14 23:43:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:43:49,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:49,213 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] [2020-10-14 23:43:49,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:43:49,213 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:49,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:49,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1119018306, now seen corresponding path program 1 times [2020-10-14 23:43:49,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:49,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742163889] [2020-10-14 23:43:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:43:49,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 23:43:49,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:43:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:49,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:49,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:49,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:49,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742163889] [2020-10-14 23:43:49,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:49,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:49,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324661239] [2020-10-14 23:43:49,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:49,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:49,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:49,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,280 INFO L87 Difference]: Start difference. First operand 488 states and 846 transitions. Second operand 3 states. [2020-10-14 23:43:49,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:49,308 INFO L93 Difference]: Finished difference Result 1164 states and 2032 transitions. [2020-10-14 23:43:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:49,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:43:49,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:49,314 INFO L225 Difference]: With dead ends: 1164 [2020-10-14 23:43:49,314 INFO L226 Difference]: Without dead ends: 690 [2020-10-14 23:43:49,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-10-14 23:43:49,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 688. [2020-10-14 23:43:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-14 23:43:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1190 transitions. [2020-10-14 23:43:49,339 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1190 transitions. Word has length 27 [2020-10-14 23:43:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:49,339 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1190 transitions. [2020-10-14 23:43:49,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1190 transitions. [2020-10-14 23:43:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:43:49,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:49,342 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] [2020-10-14 23:43:49,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:43:49,342 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:49,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1970780365, now seen corresponding path program 1 times [2020-10-14 23:43:49,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:49,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892684702] [2020-10-14 23:43:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:43:49,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:49,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 23:43:49,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:43:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:43:49,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:49,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:49,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:49,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:49,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:49,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892684702] [2020-10-14 23:43:49,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:49,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:49,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656898829] [2020-10-14 23:43:49,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:49,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:49,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:49,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,424 INFO L87 Difference]: Start difference. First operand 688 states and 1190 transitions. Second operand 3 states. [2020-10-14 23:43:49,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:49,461 INFO L93 Difference]: Finished difference Result 1284 states and 2256 transitions. [2020-10-14 23:43:49,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:49,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 23:43:49,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:49,470 INFO L225 Difference]: With dead ends: 1284 [2020-10-14 23:43:49,470 INFO L226 Difference]: Without dead ends: 1282 [2020-10-14 23:43:49,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2020-10-14 23:43:49,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 960. [2020-10-14 23:43:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-10-14 23:43:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1630 transitions. [2020-10-14 23:43:49,508 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1630 transitions. Word has length 28 [2020-10-14 23:43:49,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:49,509 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1630 transitions. [2020-10-14 23:43:49,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1630 transitions. [2020-10-14 23:43:49,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:43:49,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:49,511 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] [2020-10-14 23:43:49,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:43:49,512 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:49,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:49,513 INFO L82 PathProgramCache]: Analyzing trace with hash 735839029, now seen corresponding path program 1 times [2020-10-14 23:43:49,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:49,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372222065] [2020-10-14 23:43:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:43:49,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 23:43:49,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:43:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:49,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:49,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:49,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:49,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:49,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:49,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372222065] [2020-10-14 23:43:49,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:49,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:49,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183455682] [2020-10-14 23:43:49,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:49,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:49,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:49,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,634 INFO L87 Difference]: Start difference. First operand 960 states and 1630 transitions. Second operand 3 states. [2020-10-14 23:43:49,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:49,678 INFO L93 Difference]: Finished difference Result 2292 states and 3920 transitions. [2020-10-14 23:43:49,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:49,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 23:43:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:49,688 INFO L225 Difference]: With dead ends: 2292 [2020-10-14 23:43:49,688 INFO L226 Difference]: Without dead ends: 1346 [2020-10-14 23:43:49,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2020-10-14 23:43:49,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1344. [2020-10-14 23:43:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-10-14 23:43:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 2278 transitions. [2020-10-14 23:43:49,753 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 2278 transitions. Word has length 28 [2020-10-14 23:43:49,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:49,754 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 2278 transitions. [2020-10-14 23:43:49,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:49,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 2278 transitions. [2020-10-14 23:43:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:43:49,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:49,757 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] [2020-10-14 23:43:49,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:43:49,758 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:49,758 INFO L82 PathProgramCache]: Analyzing trace with hash -964435723, now seen corresponding path program 1 times [2020-10-14 23:43:49,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:49,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49953813] [2020-10-14 23:43:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:43:49,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 23:43:49,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:49,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:43:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:49,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:49,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:49,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:49,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:49,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:49,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:49,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:49,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:49,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49953813] [2020-10-14 23:43:49,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:49,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:49,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382728823] [2020-10-14 23:43:49,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:49,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:49,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:49,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:49,997 INFO L87 Difference]: Start difference. First operand 1344 states and 2278 transitions. Second operand 3 states. [2020-10-14 23:43:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:50,034 INFO L93 Difference]: Finished difference Result 2028 states and 3432 transitions. [2020-10-14 23:43:50,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:50,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 23:43:50,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:50,042 INFO L225 Difference]: With dead ends: 2028 [2020-10-14 23:43:50,042 INFO L226 Difference]: Without dead ends: 1370 [2020-10-14 23:43:50,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2020-10-14 23:43:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1368. [2020-10-14 23:43:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2020-10-14 23:43:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2294 transitions. [2020-10-14 23:43:50,104 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2294 transitions. Word has length 29 [2020-10-14 23:43:50,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:50,105 INFO L479 AbstractCegarLoop]: Abstraction has 1368 states and 2294 transitions. [2020-10-14 23:43:50,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:50,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2294 transitions. [2020-10-14 23:43:50,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:43:50,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:50,108 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] [2020-10-14 23:43:50,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:43:50,109 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:50,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:50,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1336386867, now seen corresponding path program 1 times [2020-10-14 23:43:50,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:50,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003384256] [2020-10-14 23:43:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:50,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:50,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:50,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:50,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:43:50,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:43:50,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:50,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:43:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:43:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:50,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:50,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:50,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:50,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:50,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:50,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:50,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:50,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:50,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:50,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:50,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:50,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003384256] [2020-10-14 23:43:50,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:50,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:50,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036764816] [2020-10-14 23:43:50,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:50,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:50,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:50,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:50,209 INFO L87 Difference]: Start difference. First operand 1368 states and 2294 transitions. Second operand 3 states. [2020-10-14 23:43:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:50,251 INFO L93 Difference]: Finished difference Result 2508 states and 4280 transitions. [2020-10-14 23:43:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:50,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 23:43:50,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:50,268 INFO L225 Difference]: With dead ends: 2508 [2020-10-14 23:43:50,269 INFO L226 Difference]: Without dead ends: 2506 [2020-10-14 23:43:50,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2020-10-14 23:43:50,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 1928. [2020-10-14 23:43:50,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1928 states. [2020-10-14 23:43:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 3158 transitions. [2020-10-14 23:43:50,351 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 3158 transitions. Word has length 29 [2020-10-14 23:43:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:50,352 INFO L479 AbstractCegarLoop]: Abstraction has 1928 states and 3158 transitions. [2020-10-14 23:43:50,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 3158 transitions. [2020-10-14 23:43:50,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:43:50,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:50,356 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] [2020-10-14 23:43:50,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:43:50,356 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:50,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:50,357 INFO L82 PathProgramCache]: Analyzing trace with hash -251961035, now seen corresponding path program 1 times [2020-10-14 23:43:50,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:50,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176771593] [2020-10-14 23:43:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:50,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:50,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:50,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:43:50,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 23:43:50,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:50,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:43:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:50,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:50,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:50,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:50,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:50,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:50,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:50,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176771593] [2020-10-14 23:43:50,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:50,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:50,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649310793] [2020-10-14 23:43:50,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:50,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:50,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:50,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:50,481 INFO L87 Difference]: Start difference. First operand 1928 states and 3158 transitions. Second operand 3 states. [2020-10-14 23:43:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:50,537 INFO L93 Difference]: Finished difference Result 4556 states and 7512 transitions. [2020-10-14 23:43:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:50,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 23:43:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:50,553 INFO L225 Difference]: With dead ends: 4556 [2020-10-14 23:43:50,554 INFO L226 Difference]: Without dead ends: 2666 [2020-10-14 23:43:50,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:50,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-10-14 23:43:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2664. [2020-10-14 23:43:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-10-14 23:43:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 4358 transitions. [2020-10-14 23:43:50,654 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 4358 transitions. Word has length 29 [2020-10-14 23:43:50,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:50,654 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 4358 transitions. [2020-10-14 23:43:50,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 4358 transitions. [2020-10-14 23:43:50,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:43:50,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:50,658 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] [2020-10-14 23:43:50,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:43:50,659 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:50,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1521466294, now seen corresponding path program 1 times [2020-10-14 23:43:50,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:50,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741223953] [2020-10-14 23:43:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:50,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:50,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:50,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:50,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:43:50,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 23:43:50,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:50,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:43:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:50,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:50,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:50,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:50,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:50,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:50,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:50,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:50,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741223953] [2020-10-14 23:43:50,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:50,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:50,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149807614] [2020-10-14 23:43:50,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:50,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:50,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:50,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:50,834 INFO L87 Difference]: Start difference. First operand 2664 states and 4358 transitions. Second operand 3 states. [2020-10-14 23:43:50,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:50,897 INFO L93 Difference]: Finished difference Result 3996 states and 6520 transitions. [2020-10-14 23:43:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:50,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:43:50,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:50,912 INFO L225 Difference]: With dead ends: 3996 [2020-10-14 23:43:50,912 INFO L226 Difference]: Without dead ends: 2698 [2020-10-14 23:43:50,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2020-10-14 23:43:50,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2696. [2020-10-14 23:43:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2696 states. [2020-10-14 23:43:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 4358 transitions. [2020-10-14 23:43:50,990 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 4358 transitions. Word has length 30 [2020-10-14 23:43:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:50,991 INFO L479 AbstractCegarLoop]: Abstraction has 2696 states and 4358 transitions. [2020-10-14 23:43:50,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 4358 transitions. [2020-10-14 23:43:50,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:43:50,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:50,995 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] [2020-10-14 23:43:50,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:43:50,995 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:50,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:50,996 INFO L82 PathProgramCache]: Analyzing trace with hash 779356296, now seen corresponding path program 1 times [2020-10-14 23:43:50,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:50,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685493480] [2020-10-14 23:43:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:51,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:51,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:51,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:43:51,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:43:51,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:51,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:43:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:51,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:51,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:51,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:51,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:51,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:51,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:51,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:51,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:51,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:51,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:51,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:51,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:51,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685493480] [2020-10-14 23:43:51,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:51,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:51,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569561613] [2020-10-14 23:43:51,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:51,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:51,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:51,072 INFO L87 Difference]: Start difference. First operand 2696 states and 4358 transitions. Second operand 3 states. [2020-10-14 23:43:51,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:51,116 INFO L93 Difference]: Finished difference Result 3996 states and 6424 transitions. [2020-10-14 23:43:51,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:51,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:43:51,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:51,133 INFO L225 Difference]: With dead ends: 3996 [2020-10-14 23:43:51,133 INFO L226 Difference]: Without dead ends: 2698 [2020-10-14 23:43:51,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:51,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2020-10-14 23:43:51,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2696. [2020-10-14 23:43:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2696 states. [2020-10-14 23:43:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 4294 transitions. [2020-10-14 23:43:51,225 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 4294 transitions. Word has length 30 [2020-10-14 23:43:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:51,226 INFO L479 AbstractCegarLoop]: Abstraction has 2696 states and 4294 transitions. [2020-10-14 23:43:51,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 4294 transitions. [2020-10-14 23:43:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:43:51,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:51,230 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] [2020-10-14 23:43:51,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:43:51,230 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:51,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:51,231 INFO L82 PathProgramCache]: Analyzing trace with hash -38292154, now seen corresponding path program 1 times [2020-10-14 23:43:51,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:51,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108306124] [2020-10-14 23:43:51,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:51,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:51,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:43:51,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:43:51,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:51,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:43:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:43:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:51,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:51,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:51,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:51,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:43:51,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:51,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:51,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:51,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:51,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108306124] [2020-10-14 23:43:51,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:51,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:51,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451761778] [2020-10-14 23:43:51,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:51,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:51,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:51,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:51,287 INFO L87 Difference]: Start difference. First operand 2696 states and 4294 transitions. Second operand 3 states. [2020-10-14 23:43:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:51,350 INFO L93 Difference]: Finished difference Result 4876 states and 7944 transitions. [2020-10-14 23:43:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:51,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:43:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:51,376 INFO L225 Difference]: With dead ends: 4876 [2020-10-14 23:43:51,376 INFO L226 Difference]: Without dead ends: 4874 [2020-10-14 23:43:51,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:51,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2020-10-14 23:43:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 3848. [2020-10-14 23:43:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3848 states. [2020-10-14 23:43:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 5958 transitions. [2020-10-14 23:43:51,515 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 5958 transitions. Word has length 30 [2020-10-14 23:43:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:51,515 INFO L479 AbstractCegarLoop]: Abstraction has 3848 states and 5958 transitions. [2020-10-14 23:43:51,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:51,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 5958 transitions. [2020-10-14 23:43:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:43:51,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:51,522 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] [2020-10-14 23:43:51,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:43:51,522 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:51,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:51,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1626640056, now seen corresponding path program 1 times [2020-10-14 23:43:51,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:51,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891687439] [2020-10-14 23:43:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:51,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:51,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:51,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:43:51,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:43:51,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:51,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:43:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:51,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:51,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:51,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:51,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:51,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:51,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:43:51,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:51,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:51,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:51,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891687439] [2020-10-14 23:43:51,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:51,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:51,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395470142] [2020-10-14 23:43:51,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:51,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:51,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:51,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:51,579 INFO L87 Difference]: Start difference. First operand 3848 states and 5958 transitions. Second operand 3 states. [2020-10-14 23:43:51,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:51,653 INFO L93 Difference]: Finished difference Result 9036 states and 14088 transitions. [2020-10-14 23:43:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:51,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:43:51,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:51,668 INFO L225 Difference]: With dead ends: 9036 [2020-10-14 23:43:51,668 INFO L226 Difference]: Without dead ends: 5258 [2020-10-14 23:43:51,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:51,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2020-10-14 23:43:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5256. [2020-10-14 23:43:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5256 states. [2020-10-14 23:43:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 8134 transitions. [2020-10-14 23:43:51,810 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 8134 transitions. Word has length 30 [2020-10-14 23:43:51,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:51,810 INFO L479 AbstractCegarLoop]: Abstraction has 5256 states and 8134 transitions. [2020-10-14 23:43:51,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:51,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 8134 transitions. [2020-10-14 23:43:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:43:51,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:51,817 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] [2020-10-14 23:43:51,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:43:51,817 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:51,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1186842644, now seen corresponding path program 1 times [2020-10-14 23:43:51,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:51,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684483377] [2020-10-14 23:43:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:51,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:51,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:51,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:51,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:43:51,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:51,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 23:43:51,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:51,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 23:43:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:51,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:51,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:51,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:51,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:51,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:51,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:51,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:51,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:51,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:51,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:51,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:51,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684483377] [2020-10-14 23:43:51,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:51,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:51,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858384351] [2020-10-14 23:43:51,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:51,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:51,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:51,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:51,893 INFO L87 Difference]: Start difference. First operand 5256 states and 8134 transitions. Second operand 3 states. [2020-10-14 23:43:52,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:52,019 INFO L93 Difference]: Finished difference Result 15500 states and 23880 transitions. [2020-10-14 23:43:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:52,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 23:43:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:52,047 INFO L225 Difference]: With dead ends: 15500 [2020-10-14 23:43:52,047 INFO L226 Difference]: Without dead ends: 10314 [2020-10-14 23:43:52,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10314 states. [2020-10-14 23:43:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10314 to 10312. [2020-10-14 23:43:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10312 states. [2020-10-14 23:43:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 15622 transitions. [2020-10-14 23:43:52,393 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 15622 transitions. Word has length 31 [2020-10-14 23:43:52,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:52,393 INFO L479 AbstractCegarLoop]: Abstraction has 10312 states and 15622 transitions. [2020-10-14 23:43:52,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 15622 transitions. [2020-10-14 23:43:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:43:52,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:52,405 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] [2020-10-14 23:43:52,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:43:52,407 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:52,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:52,408 INFO L82 PathProgramCache]: Analyzing trace with hash 401505258, now seen corresponding path program 1 times [2020-10-14 23:43:52,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:52,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842945670] [2020-10-14 23:43:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:52,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:52,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:52,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:43:52,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:52,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:43:52,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:52,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:52,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:52,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 23:43:52,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:43:52,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:52,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:52,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:52,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:52,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:52,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:52,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:52,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:52,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842945670] [2020-10-14 23:43:52,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:52,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:52,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894633103] [2020-10-14 23:43:52,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:52,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:52,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:52,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:52,487 INFO L87 Difference]: Start difference. First operand 10312 states and 15622 transitions. Second operand 3 states. [2020-10-14 23:43:52,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:52,610 INFO L93 Difference]: Finished difference Result 12108 states and 18952 transitions. [2020-10-14 23:43:52,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:52,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 23:43:52,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:52,638 INFO L225 Difference]: With dead ends: 12108 [2020-10-14 23:43:52,639 INFO L226 Difference]: Without dead ends: 12106 [2020-10-14 23:43:52,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:52,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12106 states. [2020-10-14 23:43:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12106 to 10312. [2020-10-14 23:43:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10312 states. [2020-10-14 23:43:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 15494 transitions. [2020-10-14 23:43:53,036 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 15494 transitions. Word has length 31 [2020-10-14 23:43:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:53,036 INFO L479 AbstractCegarLoop]: Abstraction has 10312 states and 15494 transitions. [2020-10-14 23:43:53,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 15494 transitions. [2020-10-14 23:43:53,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:43:53,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:53,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:53,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:43:53,050 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:53,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:53,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1862798171, now seen corresponding path program 1 times [2020-10-14 23:43:53,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:53,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247483726] [2020-10-14 23:43:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:53,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:53,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:53,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:43:53,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 23:43:53,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:53,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:43:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:53,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:53,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:53,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:53,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:53,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:53,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:53,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:53,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247483726] [2020-10-14 23:43:53,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:53,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:53,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572952655] [2020-10-14 23:43:53,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:53,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:53,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:53,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:53,131 INFO L87 Difference]: Start difference. First operand 10312 states and 15494 transitions. Second operand 3 states. [2020-10-14 23:43:53,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:53,247 INFO L93 Difference]: Finished difference Result 15436 states and 23112 transitions. [2020-10-14 23:43:53,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:53,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 23:43:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:53,272 INFO L225 Difference]: With dead ends: 15436 [2020-10-14 23:43:53,272 INFO L226 Difference]: Without dead ends: 10378 [2020-10-14 23:43:53,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10378 states. [2020-10-14 23:43:53,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10378 to 10376. [2020-10-14 23:43:53,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10376 states. [2020-10-14 23:43:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10376 states to 10376 states and 15366 transitions. [2020-10-14 23:43:53,507 INFO L78 Accepts]: Start accepts. Automaton has 10376 states and 15366 transitions. Word has length 32 [2020-10-14 23:43:53,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:53,507 INFO L479 AbstractCegarLoop]: Abstraction has 10376 states and 15366 transitions. [2020-10-14 23:43:53,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 10376 states and 15366 transitions. [2020-10-14 23:43:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:43:53,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:53,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:53,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:43:53,521 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:53,521 INFO L82 PathProgramCache]: Analyzing trace with hash 173854429, now seen corresponding path program 1 times [2020-10-14 23:43:53,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:53,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225538034] [2020-10-14 23:43:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:53,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:53,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:43:53,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:53,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:43:53,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:53,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:53,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:53,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:43:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:43:53,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:53,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:53,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:53,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:53,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:53,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:53,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:43:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:53,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225538034] [2020-10-14 23:43:53,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:53,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:53,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558781893] [2020-10-14 23:43:53,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:53,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:53,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:53,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:53,579 INFO L87 Difference]: Start difference. First operand 10376 states and 15366 transitions. Second operand 3 states. [2020-10-14 23:43:53,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:53,933 INFO L93 Difference]: Finished difference Result 18316 states and 27784 transitions. [2020-10-14 23:43:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:53,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 23:43:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:53,981 INFO L225 Difference]: With dead ends: 18316 [2020-10-14 23:43:53,982 INFO L226 Difference]: Without dead ends: 18314 [2020-10-14 23:43:53,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18314 states. [2020-10-14 23:43:54,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18314 to 15240. [2020-10-14 23:43:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15240 states. [2020-10-14 23:43:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15240 states to 15240 states and 21894 transitions. [2020-10-14 23:43:54,317 INFO L78 Accepts]: Start accepts. Automaton has 15240 states and 21894 transitions. Word has length 32 [2020-10-14 23:43:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:54,317 INFO L479 AbstractCegarLoop]: Abstraction has 15240 states and 21894 transitions. [2020-10-14 23:43:54,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 15240 states and 21894 transitions. [2020-10-14 23:43:54,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:43:54,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:54,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:54,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:43:54,341 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:54,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:54,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1414493473, now seen corresponding path program 1 times [2020-10-14 23:43:54,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:54,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907519385] [2020-10-14 23:43:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:54,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:54,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:54,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:43:54,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:54,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:43:54,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:54,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:43:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:54,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:54,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:54,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:54,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:54,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:54,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:43:54,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:54,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:54,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:54,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907519385] [2020-10-14 23:43:54,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:54,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:54,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222148204] [2020-10-14 23:43:54,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:54,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:54,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:54,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:54,393 INFO L87 Difference]: Start difference. First operand 15240 states and 21894 transitions. Second operand 3 states. [2020-10-14 23:43:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:55,127 INFO L93 Difference]: Finished difference Result 35468 states and 51336 transitions. [2020-10-14 23:43:55,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:55,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 23:43:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:55,186 INFO L225 Difference]: With dead ends: 35468 [2020-10-14 23:43:55,186 INFO L226 Difference]: Without dead ends: 20362 [2020-10-14 23:43:55,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20362 states. [2020-10-14 23:43:55,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20362 to 20360. [2020-10-14 23:43:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20360 states. [2020-10-14 23:43:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20360 states to 20360 states and 29190 transitions. [2020-10-14 23:43:55,648 INFO L78 Accepts]: Start accepts. Automaton has 20360 states and 29190 transitions. Word has length 32 [2020-10-14 23:43:55,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:55,649 INFO L479 AbstractCegarLoop]: Abstraction has 20360 states and 29190 transitions. [2020-10-14 23:43:55,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:55,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20360 states and 29190 transitions. [2020-10-14 23:43:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:43:55,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:55,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:55,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:43:55,674 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1094734815, now seen corresponding path program 1 times [2020-10-14 23:43:55,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:55,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651336015] [2020-10-14 23:43:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:55,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:55,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:55,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:43:55,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:55,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 23:43:55,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:55,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:43:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:55,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:55,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:55,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:55,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:55,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:55,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:43:55,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:55,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:55,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:55,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:55,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:55,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:55,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651336015] [2020-10-14 23:43:55,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:55,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:55,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817455712] [2020-10-14 23:43:55,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:55,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:55,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:55,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:55,744 INFO L87 Difference]: Start difference. First operand 20360 states and 29190 transitions. Second operand 3 states. [2020-10-14 23:43:56,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:56,028 INFO L93 Difference]: Finished difference Result 30732 states and 44040 transitions. [2020-10-14 23:43:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:56,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 23:43:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:56,103 INFO L225 Difference]: With dead ends: 30732 [2020-10-14 23:43:56,104 INFO L226 Difference]: Without dead ends: 20746 [2020-10-14 23:43:56,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:56,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20746 states. [2020-10-14 23:43:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20746 to 20744. [2020-10-14 23:43:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20744 states. [2020-10-14 23:43:56,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20744 states to 20744 states and 29446 transitions. [2020-10-14 23:43:56,892 INFO L78 Accepts]: Start accepts. Automaton has 20744 states and 29446 transitions. Word has length 33 [2020-10-14 23:43:56,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:56,892 INFO L479 AbstractCegarLoop]: Abstraction has 20744 states and 29446 transitions. [2020-10-14 23:43:56,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:56,892 INFO L276 IsEmpty]: Start isEmpty. Operand 20744 states and 29446 transitions. [2020-10-14 23:43:56,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:43:56,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:56,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:56,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:43:56,925 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:56,926 INFO L82 PathProgramCache]: Analyzing trace with hash -899409891, now seen corresponding path program 1 times [2020-10-14 23:43:56,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:56,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765538575] [2020-10-14 23:43:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:56,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:56,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:43:56,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:56,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:43:56,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:56,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:56,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:56,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:43:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:43:56,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:56,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:56,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:56,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:56,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:56,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:56,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:56,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:56,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:56,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:56,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:56,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765538575] [2020-10-14 23:43:56,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:56,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:56,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880186499] [2020-10-14 23:43:56,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:56,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:56,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:56,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:56,987 INFO L87 Difference]: Start difference. First operand 20744 states and 29446 transitions. Second operand 3 states. [2020-10-14 23:43:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:57,357 INFO L93 Difference]: Finished difference Result 35852 states and 51976 transitions. [2020-10-14 23:43:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:57,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 23:43:57,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:57,595 INFO L225 Difference]: With dead ends: 35852 [2020-10-14 23:43:57,596 INFO L226 Difference]: Without dead ends: 35850 [2020-10-14 23:43:57,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35850 states. [2020-10-14 23:43:58,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35850 to 30728. [2020-10-14 23:43:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30728 states. [2020-10-14 23:43:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30728 states to 30728 states and 42246 transitions. [2020-10-14 23:43:58,199 INFO L78 Accepts]: Start accepts. Automaton has 30728 states and 42246 transitions. Word has length 33 [2020-10-14 23:43:58,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:58,199 INFO L479 AbstractCegarLoop]: Abstraction has 30728 states and 42246 transitions. [2020-10-14 23:43:58,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:58,199 INFO L276 IsEmpty]: Start isEmpty. Operand 30728 states and 42246 transitions. [2020-10-14 23:43:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:43:58,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:58,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:58,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:43:58,244 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:58,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:58,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1807209503, now seen corresponding path program 1 times [2020-10-14 23:43:58,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:58,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658681830] [2020-10-14 23:43:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:58,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:58,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:43:58,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:43:58,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:58,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:43:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:43:58,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:58,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:58,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:58,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:58,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:43:58,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:58,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:58,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:58,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:43:58,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658681830] [2020-10-14 23:43:58,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:43:58,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:43:58,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371276542] [2020-10-14 23:43:58,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:43:58,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:58,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:43:58,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:58,304 INFO L87 Difference]: Start difference. First operand 30728 states and 42246 transitions. Second operand 3 states. [2020-10-14 23:43:58,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:58,792 INFO L93 Difference]: Finished difference Result 70668 states and 97544 transitions. [2020-10-14 23:43:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:43:58,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 23:43:58,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:58,892 INFO L225 Difference]: With dead ends: 70668 [2020-10-14 23:43:58,892 INFO L226 Difference]: Without dead ends: 40458 [2020-10-14 23:43:59,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:43:59,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40458 states. [2020-10-14 23:43:59,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40458 to 40456. [2020-10-14 23:43:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40456 states. [2020-10-14 23:43:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40456 states to 40456 states and 55302 transitions. [2020-10-14 23:43:59,896 INFO L78 Accepts]: Start accepts. Automaton has 40456 states and 55302 transitions. Word has length 33 [2020-10-14 23:43:59,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:59,897 INFO L479 AbstractCegarLoop]: Abstraction has 40456 states and 55302 transitions. [2020-10-14 23:43:59,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:43:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 40456 states and 55302 transitions. [2020-10-14 23:43:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:43:59,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:59,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:43:59,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:43:59,933 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:59,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:59,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2111687692, now seen corresponding path program 1 times [2020-10-14 23:43:59,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:59,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135644074] [2020-10-14 23:43:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:59,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:00,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:00,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:44:00,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 23:44:00,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:00,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:44:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:44:00,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:00,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:00,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:00,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:00,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:00,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:00,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:00,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:00,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:00,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:00,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:00,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:00,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135644074] [2020-10-14 23:44:00,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:00,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:00,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778787908] [2020-10-14 23:44:00,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:00,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:00,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:00,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:00,034 INFO L87 Difference]: Start difference. First operand 40456 states and 55302 transitions. Second operand 3 states. [2020-10-14 23:44:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:00,640 INFO L93 Difference]: Finished difference Result 60684 states and 82696 transitions. [2020-10-14 23:44:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:00,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-14 23:44:00,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:00,694 INFO L225 Difference]: With dead ends: 60684 [2020-10-14 23:44:00,694 INFO L226 Difference]: Without dead ends: 40970 [2020-10-14 23:44:00,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40970 states. [2020-10-14 23:44:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40970 to 40968. [2020-10-14 23:44:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40968 states. [2020-10-14 23:44:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40968 states to 40968 states and 55302 transitions. [2020-10-14 23:44:01,436 INFO L78 Accepts]: Start accepts. Automaton has 40968 states and 55302 transitions. Word has length 34 [2020-10-14 23:44:01,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:01,436 INFO L479 AbstractCegarLoop]: Abstraction has 40968 states and 55302 transitions. [2020-10-14 23:44:01,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 40968 states and 55302 transitions. [2020-10-14 23:44:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:44:01,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:01,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:01,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:44:01,463 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:01,463 INFO L82 PathProgramCache]: Analyzing trace with hash 189134898, now seen corresponding path program 1 times [2020-10-14 23:44:01,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:01,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573804627] [2020-10-14 23:44:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:01,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:01,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:44:01,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:44:01,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:01,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:44:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:01,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:01,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:01,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:01,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:01,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:01,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:01,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:01,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:01,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573804627] [2020-10-14 23:44:01,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:01,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:01,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657181437] [2020-10-14 23:44:01,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:01,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:01,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:01,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:01,522 INFO L87 Difference]: Start difference. First operand 40968 states and 55302 transitions. Second operand 3 states. [2020-10-14 23:44:02,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:02,308 INFO L93 Difference]: Finished difference Result 69644 states and 95752 transitions. [2020-10-14 23:44:02,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:02,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-14 23:44:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:02,392 INFO L225 Difference]: With dead ends: 69644 [2020-10-14 23:44:02,393 INFO L226 Difference]: Without dead ends: 69642 [2020-10-14 23:44:02,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69642 states. [2020-10-14 23:44:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69642 to 61448. [2020-10-14 23:44:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61448 states. [2020-10-14 23:44:04,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61448 states to 61448 states and 80390 transitions. [2020-10-14 23:44:04,597 INFO L78 Accepts]: Start accepts. Automaton has 61448 states and 80390 transitions. Word has length 34 [2020-10-14 23:44:04,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,598 INFO L479 AbstractCegarLoop]: Abstraction has 61448 states and 80390 transitions. [2020-10-14 23:44:04,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,598 INFO L276 IsEmpty]: Start isEmpty. Operand 61448 states and 80390 transitions. [2020-10-14 23:44:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:44:04,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:04,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:44:04,653 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1399213004, now seen corresponding path program 1 times [2020-10-14 23:44:04,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123350847] [2020-10-14 23:44:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:44:04,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:44:04,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:44:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:44:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:04,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:04,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:04,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123350847] [2020-10-14 23:44:04,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604014557] [2020-10-14 23:44:04,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,708 INFO L87 Difference]: Start difference. First operand 61448 states and 80390 transitions. Second operand 3 states. [2020-10-14 23:44:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,299 INFO L93 Difference]: Finished difference Result 140300 states and 183816 transitions. [2020-10-14 23:44:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-14 23:44:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,383 INFO L225 Difference]: With dead ends: 140300 [2020-10-14 23:44:05,383 INFO L226 Difference]: Without dead ends: 79882 [2020-10-14 23:44:05,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79882 states. [2020-10-14 23:44:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79882 to 79880. [2020-10-14 23:44:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79880 states. [2020-10-14 23:44:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79880 states to 79880 states and 103430 transitions. [2020-10-14 23:44:06,755 INFO L78 Accepts]: Start accepts. Automaton has 79880 states and 103430 transitions. Word has length 34 [2020-10-14 23:44:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:06,756 INFO L479 AbstractCegarLoop]: Abstraction has 79880 states and 103430 transitions. [2020-10-14 23:44:06,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 79880 states and 103430 transitions. [2020-10-14 23:44:06,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:44:06,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:06,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:06,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:44:06,804 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:06,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:06,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1568430036, now seen corresponding path program 1 times [2020-10-14 23:44:06,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:06,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691405466] [2020-10-14 23:44:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:44:06,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:06,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:44:06,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:06,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:44:06,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:44:06,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:06,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:06,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:06,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:06,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:06,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691405466] [2020-10-14 23:44:06,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:06,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:06,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730092775] [2020-10-14 23:44:06,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:06,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:06,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:06,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,880 INFO L87 Difference]: Start difference. First operand 79880 states and 103430 transitions. Second operand 3 states. [2020-10-14 23:44:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,844 INFO L93 Difference]: Finished difference Result 119820 states and 154632 transitions. [2020-10-14 23:44:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-14 23:44:07,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,935 INFO L225 Difference]: With dead ends: 119820 [2020-10-14 23:44:07,935 INFO L226 Difference]: Without dead ends: 80906 [2020-10-14 23:44:07,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80906 states. [2020-10-14 23:44:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80906 to 80904. [2020-10-14 23:44:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80904 states. [2020-10-14 23:44:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80904 states to 80904 states and 103430 transitions. [2020-10-14 23:44:08,847 INFO L78 Accepts]: Start accepts. Automaton has 80904 states and 103430 transitions. Word has length 35 [2020-10-14 23:44:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,847 INFO L479 AbstractCegarLoop]: Abstraction has 80904 states and 103430 transitions. [2020-10-14 23:44:08,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 80904 states and 103430 transitions. [2020-10-14 23:44:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:44:08,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:08,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:44:08,882 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash -425714670, now seen corresponding path program 1 times [2020-10-14 23:44:08,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587366179] [2020-10-14 23:44:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:44:08,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:44:08,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:44:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:08,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:08,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:08,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587366179] [2020-10-14 23:44:08,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231536655] [2020-10-14 23:44:08,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,943 INFO L87 Difference]: Start difference. First operand 80904 states and 103430 transitions. Second operand 3 states. [2020-10-14 23:44:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:09,997 INFO L93 Difference]: Finished difference Result 135180 states and 175112 transitions. [2020-10-14 23:44:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:09,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-14 23:44:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:10,146 INFO L225 Difference]: With dead ends: 135180 [2020-10-14 23:44:10,146 INFO L226 Difference]: Without dead ends: 135178 [2020-10-14 23:44:10,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135178 states. [2020-10-14 23:44:13,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135178 to 122888. [2020-10-14 23:44:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122888 states. [2020-10-14 23:44:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122888 states to 122888 states and 152582 transitions. [2020-10-14 23:44:13,197 INFO L78 Accepts]: Start accepts. Automaton has 122888 states and 152582 transitions. Word has length 35 [2020-10-14 23:44:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:13,197 INFO L479 AbstractCegarLoop]: Abstraction has 122888 states and 152582 transitions. [2020-10-14 23:44:13,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 122888 states and 152582 transitions. [2020-10-14 23:44:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:44:13,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:13,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:13,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:44:13,269 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:13,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2014062572, now seen corresponding path program 1 times [2020-10-14 23:44:13,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:13,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603094703] [2020-10-14 23:44:13,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:13,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:44:13,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:44:13,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:13,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:44:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:44:13,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:13,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:13,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:13,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:13,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:13,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:13,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:13,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603094703] [2020-10-14 23:44:13,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:13,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:13,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635055750] [2020-10-14 23:44:13,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:13,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:13,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:13,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:13,318 INFO L87 Difference]: Start difference. First operand 122888 states and 152582 transitions. Second operand 3 states. [2020-10-14 23:44:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:15,105 INFO L93 Difference]: Finished difference Result 278540 states and 345096 transitions. [2020-10-14 23:44:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:15,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-14 23:44:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:15,275 INFO L225 Difference]: With dead ends: 278540 [2020-10-14 23:44:15,275 INFO L226 Difference]: Without dead ends: 157706 [2020-10-14 23:44:15,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157706 states. [2020-10-14 23:44:20,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157706 to 157704. [2020-10-14 23:44:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157704 states. [2020-10-14 23:44:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157704 states to 157704 states and 192518 transitions. [2020-10-14 23:44:20,499 INFO L78 Accepts]: Start accepts. Automaton has 157704 states and 192518 transitions. Word has length 35 [2020-10-14 23:44:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:20,499 INFO L479 AbstractCegarLoop]: Abstraction has 157704 states and 192518 transitions. [2020-10-14 23:44:20,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 157704 states and 192518 transitions. [2020-10-14 23:44:20,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:44:20,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:20,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:20,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:44:20,580 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:20,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:20,580 INFO L82 PathProgramCache]: Analyzing trace with hash -312037047, now seen corresponding path program 1 times [2020-10-14 23:44:20,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:20,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610725566] [2020-10-14 23:44:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:20,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:20,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:20,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:20,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:44:20,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 23:44:20,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:20,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:44:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:44:20,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:20,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:20,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:20,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:20,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:20,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:20,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:20,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:20,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610725566] [2020-10-14 23:44:20,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:20,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:20,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508746211] [2020-10-14 23:44:20,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:20,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:20,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:20,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:20,655 INFO L87 Difference]: Start difference. First operand 157704 states and 192518 transitions. Second operand 3 states. [2020-10-14 23:44:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:21,675 INFO L93 Difference]: Finished difference Result 236556 states and 287752 transitions. [2020-10-14 23:44:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:21,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-14 23:44:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:21,869 INFO L225 Difference]: With dead ends: 236556 [2020-10-14 23:44:21,869 INFO L226 Difference]: Without dead ends: 159754 [2020-10-14 23:44:21,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:22,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159754 states. [2020-10-14 23:44:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159754 to 159752. [2020-10-14 23:44:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159752 states. [2020-10-14 23:44:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159752 states to 159752 states and 192518 transitions. [2020-10-14 23:44:24,443 INFO L78 Accepts]: Start accepts. Automaton has 159752 states and 192518 transitions. Word has length 36 [2020-10-14 23:44:24,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:24,443 INFO L479 AbstractCegarLoop]: Abstraction has 159752 states and 192518 transitions. [2020-10-14 23:44:24,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:24,443 INFO L276 IsEmpty]: Start isEmpty. Operand 159752 states and 192518 transitions. [2020-10-14 23:44:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:44:24,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:24,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:24,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:44:24,531 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:24,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:24,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1988785543, now seen corresponding path program 1 times [2020-10-14 23:44:24,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:24,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507477040] [2020-10-14 23:44:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:24,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:24,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:44:24,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:24,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:44:24,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:24,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:44:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:24,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:24,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:24,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:24,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:24,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:24,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:24,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:24,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:24,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:24,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:24,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:24,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507477040] [2020-10-14 23:44:24,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:24,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:24,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709164247] [2020-10-14 23:44:24,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:24,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:24,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:24,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:24,580 INFO L87 Difference]: Start difference. First operand 159752 states and 192518 transitions. Second operand 3 states. [2020-10-14 23:44:26,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:26,806 INFO L93 Difference]: Finished difference Result 262156 states and 317448 transitions. [2020-10-14 23:44:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:26,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-14 23:44:26,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:27,126 INFO L225 Difference]: With dead ends: 262156 [2020-10-14 23:44:27,126 INFO L226 Difference]: Without dead ends: 262154 [2020-10-14 23:44:27,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:27,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262154 states. [2020-10-14 23:44:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262154 to 245768. [2020-10-14 23:44:32,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245768 states. [2020-10-14 23:44:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245768 states to 245768 states and 288774 transitions. [2020-10-14 23:44:33,049 INFO L78 Accepts]: Start accepts. Automaton has 245768 states and 288774 transitions. Word has length 36 [2020-10-14 23:44:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:33,049 INFO L479 AbstractCegarLoop]: Abstraction has 245768 states and 288774 transitions. [2020-10-14 23:44:33,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 245768 states and 288774 transitions. [2020-10-14 23:44:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:44:33,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:33,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:33,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:44:33,207 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:33,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:33,207 INFO L82 PathProgramCache]: Analyzing trace with hash 400437641, now seen corresponding path program 1 times [2020-10-14 23:44:33,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:33,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514649758] [2020-10-14 23:44:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:33,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:33,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:33,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:44:33,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:44:33,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:33,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:44:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:44:33,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:33,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:33,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:33,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:33,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:33,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:33,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:33,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:33,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:33,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:33,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514649758] [2020-10-14 23:44:33,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:33,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:33,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578269040] [2020-10-14 23:44:33,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:33,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:33,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:33,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:33,259 INFO L87 Difference]: Start difference. First operand 245768 states and 288774 transitions. Second operand 3 states. [2020-10-14 23:44:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:36,452 INFO L93 Difference]: Finished difference Result 552972 states and 645128 transitions. [2020-10-14 23:44:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:36,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-14 23:44:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:36,844 INFO L225 Difference]: With dead ends: 552972 [2020-10-14 23:44:36,844 INFO L226 Difference]: Without dead ends: 311306 [2020-10-14 23:44:37,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311306 states. [2020-10-14 23:44:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311306 to 311304. [2020-10-14 23:44:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311304 states. [2020-10-14 23:44:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311304 states to 311304 states and 356358 transitions. [2020-10-14 23:44:46,109 INFO L78 Accepts]: Start accepts. Automaton has 311304 states and 356358 transitions. Word has length 36 [2020-10-14 23:44:46,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:46,109 INFO L479 AbstractCegarLoop]: Abstraction has 311304 states and 356358 transitions. [2020-10-14 23:44:46,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 311304 states and 356358 transitions. [2020-10-14 23:44:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:44:46,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:46,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:46,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:44:46,282 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:46,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1523025865, now seen corresponding path program 1 times [2020-10-14 23:44:46,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:46,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20372385] [2020-10-14 23:44:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:46,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:46,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:46,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:44:46,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:46,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:44:46,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:46,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:46,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:46,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 23:44:46,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:46,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:46,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:46,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:46,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:46,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:46,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:46,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:46,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:46,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:46,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:46,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20372385] [2020-10-14 23:44:46,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:46,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:46,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537615790] [2020-10-14 23:44:46,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:46,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:46,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:46,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:46,351 INFO L87 Difference]: Start difference. First operand 311304 states and 356358 transitions. Second operand 3 states. [2020-10-14 23:44:53,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:53,971 INFO L93 Difference]: Finished difference Result 503818 states and 573447 transitions. [2020-10-14 23:44:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:53,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-14 23:44:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:54,616 INFO L225 Difference]: With dead ends: 503818 [2020-10-14 23:44:54,616 INFO L226 Difference]: Without dead ends: 503816 [2020-10-14 23:44:54,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503816 states. [2020-10-14 23:45:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503816 to 487432. [2020-10-14 23:45:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487432 states. [2020-10-14 23:45:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487432 states to 487432 states and 548870 transitions. [2020-10-14 23:45:07,280 INFO L78 Accepts]: Start accepts. Automaton has 487432 states and 548870 transitions. Word has length 37 [2020-10-14 23:45:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:07,280 INFO L479 AbstractCegarLoop]: Abstraction has 487432 states and 548870 transitions. [2020-10-14 23:45:07,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:45:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 487432 states and 548870 transitions. [2020-10-14 23:45:07,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:45:07,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:07,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:45:07,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:45:07,603 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:07,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:07,604 INFO L82 PathProgramCache]: Analyzing trace with hash -65322037, now seen corresponding path program 1 times [2020-10-14 23:45:07,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:07,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362787430] [2020-10-14 23:45:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:07,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:07,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:07,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:45:07,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:45:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:45:07,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:07,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:45:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 23:45:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:45:07,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:07,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:07,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:07,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:07,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:07,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:45:07,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:07,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:07,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:07,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:07,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:45:07,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362787430] [2020-10-14 23:45:07,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:45:07,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:45:07,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811078033] [2020-10-14 23:45:07,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:45:07,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:07,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:45:07,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:07,679 INFO L87 Difference]: Start difference. First operand 487432 states and 548870 transitions. Second operand 3 states. [2020-10-14 23:45:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:18,661 INFO L93 Difference]: Finished difference Result 1093640 states and 1220614 transitions. [2020-10-14 23:45:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:45:18,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-14 23:45:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:18,662 INFO L225 Difference]: With dead ends: 1093640 [2020-10-14 23:45:18,662 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:45:19,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:45:19,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:45:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:45:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:45:19,192 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-10-14 23:45:19,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:19,193 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:45:19,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:45:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:45:19,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:45:19,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:45:19,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:45:19,282 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 23:45:19,282 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:45:19,282 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:45:19,283 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:45:19,283 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:45:19,283 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:45:19,283 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 219) no Hoare annotation was computed. [2020-10-14 23:45:19,283 INFO L268 CegarLoopResult]: For program point L184-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,283 INFO L268 CegarLoopResult]: For program point L118-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,283 INFO L268 CegarLoopResult]: For program point L102-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,283 INFO L268 CegarLoopResult]: For program point L185(line 185) no Hoare annotation was computed. [2020-10-14 23:45:19,284 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-10-14 23:45:19,284 INFO L268 CegarLoopResult]: For program point L53(lines 53 55) no Hoare annotation was computed. [2020-10-14 23:45:19,284 INFO L268 CegarLoopResult]: For program point L86-2(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,284 INFO L268 CegarLoopResult]: For program point L169-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,284 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 219) no Hoare annotation was computed. [2020-10-14 23:45:19,284 INFO L268 CegarLoopResult]: For program point L170(line 170) no Hoare annotation was computed. [2020-10-14 23:45:19,284 INFO L268 CegarLoopResult]: For program point L154-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,284 INFO L268 CegarLoopResult]: For program point L204-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,284 INFO L268 CegarLoopResult]: For program point L138-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,285 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-10-14 23:45:19,285 INFO L268 CegarLoopResult]: For program point L122-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,285 INFO L268 CegarLoopResult]: For program point L205(line 205) no Hoare annotation was computed. [2020-10-14 23:45:19,285 INFO L268 CegarLoopResult]: For program point L106-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,285 INFO L268 CegarLoopResult]: For program point L189-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,285 INFO L268 CegarLoopResult]: For program point L90-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,285 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-10-14 23:45:19,285 INFO L268 CegarLoopResult]: For program point L174-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,286 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-10-14 23:45:19,286 INFO L268 CegarLoopResult]: For program point L159-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,286 INFO L268 CegarLoopResult]: For program point L126-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,286 INFO L271 CegarLoopResult]: At program point L209-1(lines 51 214) the Hoare annotation is: true [2020-10-14 23:45:19,286 INFO L268 CegarLoopResult]: For program point L110-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,286 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-10-14 23:45:19,286 INFO L268 CegarLoopResult]: For program point L94-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,286 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-10-14 23:45:19,287 INFO L264 CegarLoopResult]: At program point L210-1(lines 5 219) the Hoare annotation is: false [2020-10-14 23:45:19,287 INFO L268 CegarLoopResult]: For program point L144-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,287 INFO L268 CegarLoopResult]: For program point L194-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,287 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-10-14 23:45:19,287 INFO L268 CegarLoopResult]: For program point L195(line 195) no Hoare annotation was computed. [2020-10-14 23:45:19,287 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2020-10-14 23:45:19,287 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 219) the Hoare annotation is: true [2020-10-14 23:45:19,287 INFO L268 CegarLoopResult]: For program point L179-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,288 INFO L268 CegarLoopResult]: For program point L130-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,288 INFO L268 CegarLoopResult]: For program point L180(line 180) no Hoare annotation was computed. [2020-10-14 23:45:19,288 INFO L268 CegarLoopResult]: For program point L114-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,288 INFO L268 CegarLoopResult]: For program point L164-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,288 INFO L268 CegarLoopResult]: For program point L98-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,288 INFO L268 CegarLoopResult]: For program point L165(line 165) no Hoare annotation was computed. [2020-10-14 23:45:19,288 INFO L271 CegarLoopResult]: At program point L215(lines 5 219) the Hoare annotation is: true [2020-10-14 23:45:19,288 INFO L268 CegarLoopResult]: For program point L149-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,288 INFO L268 CegarLoopResult]: For program point L199-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,289 INFO L268 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-10-14 23:45:19,289 INFO L268 CegarLoopResult]: For program point L200(line 200) no Hoare annotation was computed. [2020-10-14 23:45:19,289 INFO L268 CegarLoopResult]: For program point L134-1(lines 51 214) no Hoare annotation was computed. [2020-10-14 23:45:19,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:45:19 BoogieIcfgContainer [2020-10-14 23:45:19,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:45:19,305 INFO L168 Benchmark]: Toolchain (without parser) took 93750.48 ms. Allocated memory was 145.8 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 102.4 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2020-10-14 23:45:19,306 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-14 23:45:19,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.46 ms. Allocated memory is still 145.8 MB. Free memory was 102.4 MB in the beginning and 90.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:45:19,307 INFO L168 Benchmark]: Boogie Preprocessor took 163.29 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 90.5 MB in the beginning and 179.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:45:19,308 INFO L168 Benchmark]: RCFGBuilder took 450.86 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 155.3 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:45:19,309 INFO L168 Benchmark]: TraceAbstraction took 92738.91 ms. Allocated memory was 201.9 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 155.3 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2020-10-14 23:45:19,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 391.46 ms. Allocated memory is still 145.8 MB. Free memory was 102.4 MB in the beginning and 90.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.29 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 90.5 MB in the beginning and 179.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.86 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 155.3 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 92738.91 ms. Allocated memory was 201.9 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 155.3 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 217]: 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: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 92.5s, OverallIterations: 39, TraceHistogramMax: 1, AutomataDifference: 38.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4513 SDtfs, 2248 SDslu, 3116 SDs, 0 SdLazy, 208 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=487432occurred in iteration=38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 48.1s AutomataMinimizationTime, 39 MinimizatonAttempts, 65578 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 16394 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1193 NumberOfCodeBlocks, 1193 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1154 ConstructedInterpolants, 0 QuantifiedInterpolants, 72450 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...