/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:22:33,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:22:33,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:22:33,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:22:33,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:22:33,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:22:33,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:22:33,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:22:33,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:22:33,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:22:33,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:22:33,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:22:33,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:22:33,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:22:33,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:22:33,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:22:33,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:22:33,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:22:33,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:22:33,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:22:33,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:22:33,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:22:33,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:22:33,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:22:33,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:22:33,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:22:33,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:22:34,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:22:34,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:22:34,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:22:34,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:22:34,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:22:34,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:22:34,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:22:34,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:22:34,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:22:34,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:22:34,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:22:34,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:22:34,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:22:34,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:22:34,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:22:34,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:22:34,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:22:34,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:22:34,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:22:34,041 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:22:34,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:22:34,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:22:34,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:22:34,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:22:34,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:22:34,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:22:34,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:22:34,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:22:34,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:22:34,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:22:34,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:22:34,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:22:34,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:22:34,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:22:34,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:22:34,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:22:34,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:34,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:22:34,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:22:34,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:22:34,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:22:34,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:22:34,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:22:34,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:22:34,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:22:34,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:22:34,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:22:34,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:22:34,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:22:34,581 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:22:34,582 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label32.c [2020-09-24 18:22:34,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed8952f03/462ea01b10e54e75953dd2e656d118c3/FLAG3f2fe2577 [2020-09-24 18:22:35,340 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:22:35,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label32.c [2020-09-24 18:22:35,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed8952f03/462ea01b10e54e75953dd2e656d118c3/FLAG3f2fe2577 [2020-09-24 18:22:35,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed8952f03/462ea01b10e54e75953dd2e656d118c3 [2020-09-24 18:22:35,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:22:35,549 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:22:35,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:35,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:22:35,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:22:35,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:35" (1/1) ... [2020-09-24 18:22:35,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207a8791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:35, skipping insertion in model container [2020-09-24 18:22:35,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:35" (1/1) ... [2020-09-24 18:22:35,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:22:35,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:22:36,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:36,088 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:22:36,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:36,332 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:22:36,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36 WrapperNode [2020-09-24 18:22:36,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:36,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:22:36,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:22:36,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:22:36,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36" (1/1) ... [2020-09-24 18:22:36,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36" (1/1) ... [2020-09-24 18:22:36,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36" (1/1) ... [2020-09-24 18:22:36,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36" (1/1) ... [2020-09-24 18:22:36,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36" (1/1) ... [2020-09-24 18:22:36,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36" (1/1) ... [2020-09-24 18:22:36,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36" (1/1) ... [2020-09-24 18:22:36,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:22:36,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:22:36,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:22:36,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:22:36,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:22:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:22:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:22:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:22:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:22:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:22:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:22:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:22:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:22:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:22:36,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:22:37,890 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:22:37,890 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:22:37,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:37 BoogieIcfgContainer [2020-09-24 18:22:37,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:22:37,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:22:37,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:22:37,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:22:37,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:22:35" (1/3) ... [2020-09-24 18:22:37,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3808b195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:37, skipping insertion in model container [2020-09-24 18:22:37,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:36" (2/3) ... [2020-09-24 18:22:37,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3808b195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:37, skipping insertion in model container [2020-09-24 18:22:37,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:37" (3/3) ... [2020-09-24 18:22:37,910 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label32.c [2020-09-24 18:22:37,922 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:22:37,942 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:22:37,964 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:22:38,001 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:22:38,002 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:22:38,002 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:22:38,002 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:22:38,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:22:38,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:22:38,002 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:22:38,003 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:22:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:22:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 18:22:38,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:38,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:38,068 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:38,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:38,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1568421906, now seen corresponding path program 1 times [2020-09-24 18:22:38,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:38,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736173715] [2020-09-24 18:22:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:38,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:39,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:41,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:43,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:43,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 18:22:43,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:22:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:22:43,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:22:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 18:22:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:22:43,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:43,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:43,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:43,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:43,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:22:43,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:22:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:43,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736173715] [2020-09-24 18:22:43,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:43,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:22:43,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127936769] [2020-09-24 18:22:43,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:22:43,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:43,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:22:43,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:22:43,725 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:22:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:45,963 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-24 18:22:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:22:45,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-09-24 18:22:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:46,001 INFO L225 Difference]: With dead ends: 1247 [2020-09-24 18:22:46,002 INFO L226 Difference]: Without dead ends: 669 [2020-09-24 18:22:46,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-24 18:22:46,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-24 18:22:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-24 18:22:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-24 18:22:46,116 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 135 [2020-09-24 18:22:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:46,117 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-24 18:22:46,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:22:46,118 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-24 18:22:46,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 18:22:46,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:46,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:46,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:22:46,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:46,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:46,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1119247929, now seen corresponding path program 1 times [2020-09-24 18:22:46,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:46,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787010591] [2020-09-24 18:22:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:47,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:49,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:51,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:51,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 18:22:51,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:22:51,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:22:51,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:22:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 18:22:51,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:51,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:51,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:51,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:51,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:51,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:22:51,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:51,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:51,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:51,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:51,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:51,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:51,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:22:51,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:51,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:22:51,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:51,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:22:51,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:51,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787010591] [2020-09-24 18:22:51,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:51,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:51,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551752124] [2020-09-24 18:22:51,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:51,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:51,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:51,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:51,496 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-24 18:22:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:53,620 INFO L93 Difference]: Finished difference Result 1533 states and 1847 transitions. [2020-09-24 18:22:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:53,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-24 18:22:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:53,628 INFO L225 Difference]: With dead ends: 1533 [2020-09-24 18:22:53,628 INFO L226 Difference]: Without dead ends: 934 [2020-09-24 18:22:53,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:53,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-24 18:22:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 924. [2020-09-24 18:22:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-09-24 18:22:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1105 transitions. [2020-09-24 18:22:53,676 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1105 transitions. Word has length 152 [2020-09-24 18:22:53,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:53,677 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1105 transitions. [2020-09-24 18:22:53,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:53,677 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1105 transitions. [2020-09-24 18:22:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-24 18:22:53,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:53,683 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:53,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:22:53,683 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:53,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1353322846, now seen corresponding path program 1 times [2020-09-24 18:22:53,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:53,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994100168] [2020-09-24 18:22:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:54,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:58,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 18:22:58,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:22:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 18:22:58,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:22:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:22:58,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:58,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:58,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:58,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:58,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:58,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:58,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:22:58,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:58,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:58,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:58,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:58,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:58,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:58,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:22:58,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:22:58,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:22:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:22:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:22:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 18:22:58,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:22:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:22:59,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994100168] [2020-09-24 18:22:59,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:59,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:22:59,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517523207] [2020-09-24 18:22:59,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:59,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:59,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:59,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:59,076 INFO L87 Difference]: Start difference. First operand 924 states and 1105 transitions. Second operand 7 states. [2020-09-24 18:23:01,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:01,514 INFO L93 Difference]: Finished difference Result 2417 states and 3013 transitions. [2020-09-24 18:23:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:01,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-09-24 18:23:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:01,539 INFO L225 Difference]: With dead ends: 2417 [2020-09-24 18:23:01,539 INFO L226 Difference]: Without dead ends: 1515 [2020-09-24 18:23:01,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-09-24 18:23:01,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1245. [2020-09-24 18:23:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2020-09-24 18:23:01,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1560 transitions. [2020-09-24 18:23:01,621 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1560 transitions. Word has length 186 [2020-09-24 18:23:01,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:01,621 INFO L479 AbstractCegarLoop]: Abstraction has 1245 states and 1560 transitions. [2020-09-24 18:23:01,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:01,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1560 transitions. [2020-09-24 18:23:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-24 18:23:01,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:01,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:01,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:01,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:01,632 INFO L82 PathProgramCache]: Analyzing trace with hash 853921109, now seen corresponding path program 1 times [2020-09-24 18:23:01,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:01,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601543059] [2020-09-24 18:23:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:01,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:02,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:06,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 18:23:06,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:23:06,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4603 [2020-09-24 18:23:06,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 18:23:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 18:23:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:06,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:06,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:06,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:06,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:06,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:06,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:06,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:06,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:06,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:06,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:06,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:06,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:06,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:23:06,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:06,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:06,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:23:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:06,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:06,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:23:06,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:23:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 18:23:06,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601543059] [2020-09-24 18:23:06,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:06,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:06,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919157376] [2020-09-24 18:23:06,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:06,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:06,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:06,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:06,617 INFO L87 Difference]: Start difference. First operand 1245 states and 1560 transitions. Second operand 5 states. [2020-09-24 18:23:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:08,757 INFO L93 Difference]: Finished difference Result 3238 states and 4216 transitions. [2020-09-24 18:23:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:08,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-24 18:23:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:08,771 INFO L225 Difference]: With dead ends: 3238 [2020-09-24 18:23:08,771 INFO L226 Difference]: Without dead ends: 1487 [2020-09-24 18:23:08,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-09-24 18:23:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1476. [2020-09-24 18:23:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1476 states. [2020-09-24 18:23:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1772 transitions. [2020-09-24 18:23:08,828 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1772 transitions. Word has length 191 [2020-09-24 18:23:08,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:08,829 INFO L479 AbstractCegarLoop]: Abstraction has 1476 states and 1772 transitions. [2020-09-24 18:23:08,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:08,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1772 transitions. [2020-09-24 18:23:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 18:23:08,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:08,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:08,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:08,837 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash 867866385, now seen corresponding path program 1 times [2020-09-24 18:23:08,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:08,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128687774] [2020-09-24 18:23:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:13,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-24 18:23:13,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:23:13,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-24 18:23:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 18:23:13,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:14,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:14,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:14,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:14,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:14,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:14,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:14,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:14,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:14,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:23:14,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:23:14,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 18:23:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:14,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:14,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:23:14,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:14,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:23:14,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:14,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:23:14,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 18:23:14,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128687774] [2020-09-24 18:23:14,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:14,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:14,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922064190] [2020-09-24 18:23:14,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:14,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:14,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:14,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:14,219 INFO L87 Difference]: Start difference. First operand 1476 states and 1772 transitions. Second operand 5 states. [2020-09-24 18:23:15,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:15,732 INFO L93 Difference]: Finished difference Result 3692 states and 4544 transitions. [2020-09-24 18:23:15,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:15,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-09-24 18:23:15,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:15,745 INFO L225 Difference]: With dead ends: 3692 [2020-09-24 18:23:15,746 INFO L226 Difference]: Without dead ends: 2238 [2020-09-24 18:23:15,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2020-09-24 18:23:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2073. [2020-09-24 18:23:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2020-09-24 18:23:15,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2481 transitions. [2020-09-24 18:23:15,832 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2481 transitions. Word has length 199 [2020-09-24 18:23:15,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:15,832 INFO L479 AbstractCegarLoop]: Abstraction has 2073 states and 2481 transitions. [2020-09-24 18:23:15,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:15,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2481 transitions. [2020-09-24 18:23:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-24 18:23:15,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:15,845 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:15,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:15,845 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:15,846 INFO L82 PathProgramCache]: Analyzing trace with hash 60157500, now seen corresponding path program 1 times [2020-09-24 18:23:15,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:15,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825341079] [2020-09-24 18:23:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:15,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:20,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:20,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-24 18:23:20,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:23:20,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-24 18:23:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 18:23:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:21,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:21,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:21,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:21,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:21,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:21,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:21,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:21,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:23:21,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:21,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:23:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:21,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:21,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:23:21,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:23:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:21,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 18:23:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:21,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:21,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:23:21,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:23:21,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 18:23:21,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 18:23:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 18:23:21,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825341079] [2020-09-24 18:23:21,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:21,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:21,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892436544] [2020-09-24 18:23:21,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:21,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:21,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:21,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:21,434 INFO L87 Difference]: Start difference. First operand 2073 states and 2481 transitions. Second operand 7 states.