/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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:22,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:22,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:22,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:22,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:22,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:22,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:22,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:22,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:22,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:22,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:22,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:22,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:22,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:22,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:22,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:22,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:22,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:22,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:22,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:22,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:22,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:22,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:22,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:22,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:22,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:22,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:22,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:22,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:22,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:22,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:22,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:22,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:22,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:22,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:22,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:22,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:22,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:22,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:22,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:22,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:22,602 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 18:21:22,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:22,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:22,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:22,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:22,646 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:22,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:22,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:22,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:22,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:22,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:22,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:22,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:22,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:22,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:22,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:22,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:22,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:22,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:22,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:22,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:22,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:22,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:22,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:22,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:22,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:22,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:22,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:22,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:22,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:22,656 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 18:21:23,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:23,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:23,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:23,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:23,177 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:23,178 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2020-09-24 18:21:23,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87cffb20d/ec69d34bb8d54a949b638a227d91a107/FLAGd15a60dbc [2020-09-24 18:21:23,923 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:23,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2020-09-24 18:21:23,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87cffb20d/ec69d34bb8d54a949b638a227d91a107/FLAGd15a60dbc [2020-09-24 18:21:24,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87cffb20d/ec69d34bb8d54a949b638a227d91a107 [2020-09-24 18:21:24,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:24,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:24,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:24,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:24,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:24,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:24" (1/1) ... [2020-09-24 18:21:24,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24, skipping insertion in model container [2020-09-24 18:21:24,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:24" (1/1) ... [2020-09-24 18:21:24,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:24,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:24,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:24,712 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:24,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:24,923 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:24,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24 WrapperNode [2020-09-24 18:21:24,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:24,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:24,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:24,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:24,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24" (1/1) ... [2020-09-24 18:21:24,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24" (1/1) ... [2020-09-24 18:21:24,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24" (1/1) ... [2020-09-24 18:21:24,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24" (1/1) ... [2020-09-24 18:21:25,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24" (1/1) ... [2020-09-24 18:21:25,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24" (1/1) ... [2020-09-24 18:21:25,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24" (1/1) ... [2020-09-24 18:21:25,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:25,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:25,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:25,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:25,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24" (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 18:21:25,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:25,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:25,127 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:25,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:26,466 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:26,466 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:26,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:26 BoogieIcfgContainer [2020-09-24 18:21:26,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:26,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:26,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:26,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:26,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:24" (1/3) ... [2020-09-24 18:21:26,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:26, skipping insertion in model container [2020-09-24 18:21:26,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:24" (2/3) ... [2020-09-24 18:21:26,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:26, skipping insertion in model container [2020-09-24 18:21:26,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:26" (3/3) ... [2020-09-24 18:21:26,485 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label08.c [2020-09-24 18:21:26,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:26,508 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:26,531 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:26,565 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:26,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:26,570 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:26,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:26,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:26,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:26,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:26,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:26,602 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:26,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 18:21:26,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:26,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:26,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:26,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:26,635 INFO L82 PathProgramCache]: Analyzing trace with hash 524055129, now seen corresponding path program 1 times [2020-09-24 18:21:26,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:26,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-24 18:21:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:31,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-24 18:21:31,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:21:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 18:21:31,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:21:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-24 18:21:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:32,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:32,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:32,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:32,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:21:32,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:21:32,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:32,202 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 18:21:32,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-24 18:21:32,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:32,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:32,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752787569] [2020-09-24 18:21:32,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:32,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:32,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:32,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:32,243 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:21:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:34,260 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-24 18:21:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:34,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-24 18:21:34,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:34,303 INFO L225 Difference]: With dead ends: 1205 [2020-09-24 18:21:34,303 INFO L226 Difference]: Without dead ends: 627 [2020-09-24 18:21:34,313 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 18:21:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-24 18:21:34,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-24 18:21:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-24 18:21:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-24 18:21:34,442 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 148 [2020-09-24 18:21:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:34,443 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-24 18:21:34,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-24 18:21:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 18:21:34,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:34,455 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:34,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:34,456 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:34,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:34,456 INFO L82 PathProgramCache]: Analyzing trace with hash -2122100332, now seen corresponding path program 1 times [2020-09-24 18:21:34,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:34,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643971734] [2020-09-24 18:21:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:34,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-24 18:21:39,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:21:39,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 18:21:39,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-24 18:21:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:39,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:39,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:39,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:39,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:39,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:21:39,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 18:21:39,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:21:39,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:39,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643971734] [2020-09-24 18:21:39,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:39,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:39,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826840474] [2020-09-24 18:21:39,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:39,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:39,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:39,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:39,831 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 5 states. [2020-09-24 18:21:42,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:42,176 INFO L93 Difference]: Finished difference Result 1592 states and 2044 transitions. [2020-09-24 18:21:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:42,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-24 18:21:42,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:42,186 INFO L225 Difference]: With dead ends: 1592 [2020-09-24 18:21:42,187 INFO L226 Difference]: Without dead ends: 1001 [2020-09-24 18:21:42,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:42,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-09-24 18:21:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 801. [2020-09-24 18:21:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2020-09-24 18:21:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 979 transitions. [2020-09-24 18:21:42,244 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 979 transitions. Word has length 182 [2020-09-24 18:21:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:42,245 INFO L479 AbstractCegarLoop]: Abstraction has 801 states and 979 transitions. [2020-09-24 18:21:42,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 979 transitions. [2020-09-24 18:21:42,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-24 18:21:42,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:42,250 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:42,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:42,251 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:42,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:42,251 INFO L82 PathProgramCache]: Analyzing trace with hash 694463905, now seen corresponding path program 1 times [2020-09-24 18:21:42,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:42,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581027820] [2020-09-24 18:21:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:47,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:47,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-24 18:21:47,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:21:47,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-24 18:21:47,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 18:21:47,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:47,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:47,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:47,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:47,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:47,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:47,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:47,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:47,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:47,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:21:47,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:47,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 18:21:47,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:47,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:21:47,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:47,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581027820] [2020-09-24 18:21:47,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:47,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:47,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319262113] [2020-09-24 18:21:47,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:47,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:47,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:47,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:47,571 INFO L87 Difference]: Start difference. First operand 801 states and 979 transitions. Second operand 5 states. [2020-09-24 18:21:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:49,857 INFO L93 Difference]: Finished difference Result 2092 states and 2652 transitions. [2020-09-24 18:21:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:49,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-09-24 18:21:49,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:49,866 INFO L225 Difference]: With dead ends: 2092 [2020-09-24 18:21:49,866 INFO L226 Difference]: Without dead ends: 1313 [2020-09-24 18:21:49,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 18:21:49,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-09-24 18:21:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1261. [2020-09-24 18:21:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2020-09-24 18:21:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1488 transitions. [2020-09-24 18:21:49,922 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1488 transitions. Word has length 186 [2020-09-24 18:21:49,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:49,923 INFO L479 AbstractCegarLoop]: Abstraction has 1261 states and 1488 transitions. [2020-09-24 18:21:49,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1488 transitions. [2020-09-24 18:21:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 18:21:49,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:49,936 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, 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] [2020-09-24 18:21:49,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:49,936 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:49,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:49,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1347648009, now seen corresponding path program 1 times [2020-09-24 18:21:49,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:49,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186666883] [2020-09-24 18:21:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:50,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:54,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-24 18:21:54,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:21:54,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:21:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 18:21:54,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:55,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:55,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:55,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:55,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:55,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:55,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:55,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:55,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:21:55,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:55,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:55,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:21:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:55,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:21:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:55,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:55,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:55,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:21:55,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 18:21:55,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:21:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:55,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186666883] [2020-09-24 18:21:55,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:55,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:55,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055629039] [2020-09-24 18:21:55,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:55,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:55,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:55,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:55,310 INFO L87 Difference]: Start difference. First operand 1261 states and 1488 transitions. Second operand 7 states. [2020-09-24 18:21:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:57,723 INFO L93 Difference]: Finished difference Result 2991 states and 3675 transitions. [2020-09-24 18:21:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:21:57,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-24 18:21:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:57,736 INFO L225 Difference]: With dead ends: 2991 [2020-09-24 18:21:57,737 INFO L226 Difference]: Without dead ends: 1752 [2020-09-24 18:21:57,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:21:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-09-24 18:21:57,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1732. [2020-09-24 18:21:57,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1732 states. [2020-09-24 18:21:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2063 transitions. [2020-09-24 18:21:57,816 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2063 transitions. Word has length 205 [2020-09-24 18:21:57,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:57,816 INFO L479 AbstractCegarLoop]: Abstraction has 1732 states and 2063 transitions. [2020-09-24 18:21:57,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:57,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2063 transitions. [2020-09-24 18:21:57,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-24 18:21:57,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:57,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:57,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:21:57,825 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:57,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:57,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1236445626, now seen corresponding path program 1 times [2020-09-24 18:21:57,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:57,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008551744] [2020-09-24 18:21:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:57,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:02,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:02,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:02,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-24 18:22:02,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:22:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 18:22:02,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 18:22:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:22:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:02,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:02,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:02,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:02,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:02,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:22:02,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:02,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:03,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:03,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:03,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:22:03,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:22:03,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:22:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:03,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 18:22:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:03,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:03,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:03,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:22:03,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:22:03,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:22:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:22:03,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008551744] [2020-09-24 18:22:03,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:03,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:22:03,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905860671] [2020-09-24 18:22:03,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:03,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:03,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:03,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:03,200 INFO L87 Difference]: Start difference. First operand 1732 states and 2063 transitions. Second operand 7 states. [2020-09-24 18:22:05,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:05,135 INFO L93 Difference]: Finished difference Result 3671 states and 4393 transitions. [2020-09-24 18:22:05,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:22:05,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-24 18:22:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:05,144 INFO L225 Difference]: With dead ends: 3671 [2020-09-24 18:22:05,144 INFO L226 Difference]: Without dead ends: 1464 [2020-09-24 18:22:05,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:22:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2020-09-24 18:22:05,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1300. [2020-09-24 18:22:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1300 states. [2020-09-24 18:22:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1457 transitions. [2020-09-24 18:22:05,189 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1457 transitions. Word has length 212 [2020-09-24 18:22:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:05,189 INFO L479 AbstractCegarLoop]: Abstraction has 1300 states and 1457 transitions. [2020-09-24 18:22:05,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:22:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1457 transitions. [2020-09-24 18:22:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-24 18:22:05,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:05,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:05,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:22:05,197 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:05,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:05,197 INFO L82 PathProgramCache]: Analyzing trace with hash 802840001, now seen corresponding path program 1 times [2020-09-24 18:22:05,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:05,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120273145] [2020-09-24 18:22:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:05,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:07,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:10,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:10,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-24 18:22:10,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:22:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:22:10,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 18:22:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:22:10,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:10,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:10,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:10,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:10,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:10,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:10,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:22:10,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:10,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:10,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:10,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:10,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:10,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:22:10,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:22:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:10,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:22:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:10,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:22:10,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 18:22:10,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:22:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:22:10,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120273145] [2020-09-24 18:22:10,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:10,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:22:10,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392209140] [2020-09-24 18:22:10,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:10,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:10,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:10,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:10,559 INFO L87 Difference]: Start difference. First operand 1300 states and 1457 transitions. Second operand 7 states. [2020-09-24 18:22:12,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:12,628 INFO L93 Difference]: Finished difference Result 2938 states and 3371 transitions. [2020-09-24 18:22:12,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:22:12,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-24 18:22:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:12,637 INFO L225 Difference]: With dead ends: 2938 [2020-09-24 18:22:12,637 INFO L226 Difference]: Without dead ends: 1660 [2020-09-24 18:22:12,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:22:12,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2020-09-24 18:22:12,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1620. [2020-09-24 18:22:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2020-09-24 18:22:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 1815 transitions. [2020-09-24 18:22:12,685 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 1815 transitions. Word has length 217 [2020-09-24 18:22:12,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:12,685 INFO L479 AbstractCegarLoop]: Abstraction has 1620 states and 1815 transitions. [2020-09-24 18:22:12,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:22:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 1815 transitions. [2020-09-24 18:22:12,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-24 18:22:12,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:12,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:22:12,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:22:12,693 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:12,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:12,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1296949538, now seen corresponding path program 1 times [2020-09-24 18:22:12,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:12,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891459647] [2020-09-24 18:22:12,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:12,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:12,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:12,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:13,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking...