/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:55,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:55,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:55,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:55,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:55,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:55,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:55,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:55,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:55,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:55,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:55,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:55,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:55,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:55,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:55,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:55,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:55,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:55,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:55,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:55,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:55,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:55,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:55,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:55,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:55,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:55,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:55,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:55,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:55,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:55,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:55,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:55,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:55,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:55,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:55,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:55,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:55,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:55,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:55,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:55,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:55,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:11:55,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:55,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:55,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:55,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:55,938 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:55,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:55,939 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:55,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:55,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:55,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:55,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:55,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:55,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:55,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:55,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:55,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:55,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:55,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:55,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:55,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:55,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:55,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:55,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:55,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:55,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:55,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:55,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:55,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:55,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:55,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:11:56,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:56,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:56,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:56,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:56,409 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:56,411 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 10:11:56,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/203acbd45/659e542ed8db4d7ea90a358d42ab69a3/FLAGd7d5ca50b [2020-09-25 10:11:57,175 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:57,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 10:11:57,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/203acbd45/659e542ed8db4d7ea90a358d42ab69a3/FLAGd7d5ca50b [2020-09-25 10:11:57,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/203acbd45/659e542ed8db4d7ea90a358d42ab69a3 [2020-09-25 10:11:57,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:57,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:57,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:57,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:57,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:57,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:57" (1/1) ... [2020-09-25 10:11:57,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:57, skipping insertion in model container [2020-09-25 10:11:57,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:57" (1/1) ... [2020-09-25 10:11:57,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:57,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:58,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:58,046 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:58,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:58,241 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:58,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:58 WrapperNode [2020-09-25 10:11:58,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:58,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:58,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:58,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:58,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:58" (1/1) ... [2020-09-25 10:11:58,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:58" (1/1) ... [2020-09-25 10:11:58,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:58" (1/1) ... [2020-09-25 10:11:58,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:58" (1/1) ... [2020-09-25 10:11:58,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:58" (1/1) ... [2020-09-25 10:11:58,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:58" (1/1) ... [2020-09-25 10:11:58,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:58" (1/1) ... [2020-09-25 10:11:58,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:58,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:58,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:58,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:58,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:00,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:00,122 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:00,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:00 BoogieIcfgContainer [2020-09-25 10:12:00,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:00,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:00,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:00,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:00,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:57" (1/3) ... [2020-09-25 10:12:00,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:00, skipping insertion in model container [2020-09-25 10:12:00,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:58" (2/3) ... [2020-09-25 10:12:00,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:00, skipping insertion in model container [2020-09-25 10:12:00,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:00" (3/3) ... [2020-09-25 10:12:00,142 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-09-25 10:12:00,155 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:00,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:00,190 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:00,226 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:00,226 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:00,226 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:00,226 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:00,227 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:00,227 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:00,227 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:00,227 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 10:12:00,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:00,273 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] [2020-09-25 10:12:00,274 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:00,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:00,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1703669257, now seen corresponding path program 1 times [2020-09-25 10:12:00,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:00,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791069953] [2020-09-25 10:12:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:01,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:01,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:12:01,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1137 [2020-09-25 10:12:01,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:01,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 10:12:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:01,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:01,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:01,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:01,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:01,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:12:01,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:01,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:01,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:01,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791069953] [2020-09-25 10:12:01,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:01,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:12:01,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985084263] [2020-09-25 10:12:01,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:12:01,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:01,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:12:01,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:12:01,849 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:12:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:04,073 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 10:12:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:12:04,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 10:12:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:04,099 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 10:12:04,099 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 10:12:04,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 10:12:04,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 10:12:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 10:12:04,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 10:12:04,209 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 62 [2020-09-25 10:12:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:04,209 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 10:12:04,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:12:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 10:12:04,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 10:12:04,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:04,218 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, 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] [2020-09-25 10:12:04,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:04,219 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:04,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1996719641, now seen corresponding path program 1 times [2020-09-25 10:12:04,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:04,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708679365] [2020-09-25 10:12:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:04,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:07,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:07,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 10:12:07,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:07,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3672 [2020-09-25 10:12:07,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:07,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 10:12:07,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:08,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:08,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:08,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:08,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:12:08,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:08,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:08,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:08,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:08,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:08,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 10:12:08,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:08,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:08,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:08,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708679365] [2020-09-25 10:12:08,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:08,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:12:08,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343104427] [2020-09-25 10:12:08,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:12:08,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:08,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:12:08,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:12:08,458 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 10:12:10,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:10,380 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 10:12:10,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:12:10,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-09-25 10:12:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:10,388 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 10:12:10,388 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 10:12:10,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 10:12:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 10:12:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 10:12:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 10:12:10,426 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 141 [2020-09-25 10:12:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:10,427 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 10:12:10,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:12:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 10:12:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 10:12:10,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:10,432 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, 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] [2020-09-25 10:12:10,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:10,433 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:10,434 INFO L82 PathProgramCache]: Analyzing trace with hash -617946683, now seen corresponding path program 1 times [2020-09-25 10:12:10,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:10,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105879515] [2020-09-25 10:12:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:10,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:15,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:15,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 10:12:15,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:12:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:12:15,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:15,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 10:12:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:15,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:15,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:15,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:15,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:12:15,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:15,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:15,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:15,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:15,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:15,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:15,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:15,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:15,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 10:12:15,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:15,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:15,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 7 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:15,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105879515] [2020-09-25 10:12:15,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:15,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:12:15,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963023174] [2020-09-25 10:12:15,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:12:15,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:15,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:12:15,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:15,864 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 10:12:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:19,237 INFO L93 Difference]: Finished difference Result 1986 states and 2591 transitions. [2020-09-25 10:12:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:19,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-09-25 10:12:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:19,253 INFO L225 Difference]: With dead ends: 1986 [2020-09-25 10:12:19,253 INFO L226 Difference]: Without dead ends: 1456 [2020-09-25 10:12:19,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:19,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-09-25 10:12:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1363. [2020-09-25 10:12:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-09-25 10:12:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1741 transitions. [2020-09-25 10:12:19,319 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1741 transitions. Word has length 151 [2020-09-25 10:12:19,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:19,320 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1741 transitions. [2020-09-25 10:12:19,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:19,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1741 transitions. [2020-09-25 10:12:19,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 10:12:19,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:19,326 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, 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] [2020-09-25 10:12:19,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:19,327 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:19,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1755229107, now seen corresponding path program 1 times [2020-09-25 10:12:19,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:19,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778231507] [2020-09-25 10:12:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:19,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 10:12:21,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:21,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2034 [2020-09-25 10:12:21,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:21,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:12:21,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 10:12:21,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:21,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:21,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:21,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:12:21,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:21,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:21,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:12:21,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:21,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 10:12:21,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 10:12:21,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:21,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:21,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:12:21,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:21,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778231507] [2020-09-25 10:12:21,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:21,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:12:21,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137768645] [2020-09-25 10:12:21,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:12:21,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:21,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:12:21,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:21,856 INFO L87 Difference]: Start difference. First operand 1363 states and 1741 transitions. Second operand 7 states. [2020-09-25 10:12:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:24,250 INFO L93 Difference]: Finished difference Result 3429 states and 4626 transitions. [2020-09-25 10:12:24,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:24,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 10:12:24,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:24,268 INFO L225 Difference]: With dead ends: 3429 [2020-09-25 10:12:24,268 INFO L226 Difference]: Without dead ends: 2231 [2020-09-25 10:12:24,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:12:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-09-25 10:12:24,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2157. [2020-09-25 10:12:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-25 10:12:24,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 2647 transitions. [2020-09-25 10:12:24,372 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 2647 transitions. Word has length 153 [2020-09-25 10:12:24,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:24,373 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 2647 transitions. [2020-09-25 10:12:24,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:12:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 2647 transitions. [2020-09-25 10:12:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 10:12:24,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:24,381 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, 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, 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] [2020-09-25 10:12:24,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:24,382 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:24,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:24,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1872349141, now seen corresponding path program 1 times [2020-09-25 10:12:24,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:24,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868817818] [2020-09-25 10:12:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:24,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:29,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 10:12:29,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 10:12:29,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:29,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 10:12:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:29,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:29,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:29,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:29,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:29,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:12:29,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:29,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:12:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:29,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:29,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:29,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:29,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 10:12:29,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:29,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:29,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:12:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:29,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:29,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:29,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:29,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 10:12:29,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:29,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 95 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 10:12:30,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868817818] [2020-09-25 10:12:30,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:30,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:12:30,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955999549] [2020-09-25 10:12:30,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:12:30,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:30,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:12:30,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:12:30,085 INFO L87 Difference]: Start difference. First operand 2157 states and 2647 transitions. Second operand 9 states. [2020-09-25 10:12:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:33,533 INFO L93 Difference]: Finished difference Result 4715 states and 5982 transitions. [2020-09-25 10:12:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:12:33,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2020-09-25 10:12:33,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:33,549 INFO L225 Difference]: With dead ends: 4715 [2020-09-25 10:12:33,549 INFO L226 Difference]: Without dead ends: 2723 [2020-09-25 10:12:33,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:12:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2020-09-25 10:12:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2667. [2020-09-25 10:12:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2667 states. [2020-09-25 10:12:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3297 transitions. [2020-09-25 10:12:33,648 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3297 transitions. Word has length 230 [2020-09-25 10:12:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:33,649 INFO L479 AbstractCegarLoop]: Abstraction has 2667 states and 3297 transitions. [2020-09-25 10:12:33,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:12:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3297 transitions. [2020-09-25 10:12:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 10:12:33,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:33,655 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, 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, 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] [2020-09-25 10:12:33,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:33,655 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:33,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1975871710, now seen corresponding path program 1 times [2020-09-25 10:12:33,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:33,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176504367] [2020-09-25 10:12:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:33,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:33,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:38,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 10:12:38,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:38,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:12:38,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:38,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 10:12:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:38,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:38,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:38,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:12:38,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:38,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:38,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:38,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:38,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:39,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:39,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:39,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 10:12:39,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:39,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:39,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 10:12:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:39,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:39,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:39,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 10:12:39,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:39,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:12:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 93 proven. 4 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 10:12:39,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176504367] [2020-09-25 10:12:39,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:39,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:12:39,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889741037] [2020-09-25 10:12:39,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:12:39,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:39,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:12:39,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:12:39,529 INFO L87 Difference]: Start difference. First operand 2667 states and 3297 transitions. Second operand 10 states. [2020-09-25 10:12:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:43,304 INFO L93 Difference]: Finished difference Result 5983 states and 7709 transitions. [2020-09-25 10:12:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:12:43,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 234 [2020-09-25 10:12:43,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:43,323 INFO L225 Difference]: With dead ends: 5983 [2020-09-25 10:12:43,323 INFO L226 Difference]: Without dead ends: 3467 [2020-09-25 10:12:43,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:12:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2020-09-25 10:12:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 3278. [2020-09-25 10:12:43,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3278 states. [2020-09-25 10:12:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 4043 transitions. [2020-09-25 10:12:43,424 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 4043 transitions. Word has length 234 [2020-09-25 10:12:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:43,425 INFO L479 AbstractCegarLoop]: Abstraction has 3278 states and 4043 transitions. [2020-09-25 10:12:43,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:12:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 4043 transitions. [2020-09-25 10:12:43,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 10:12:43,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:43,433 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, 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, 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] [2020-09-25 10:12:43,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:12:43,434 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:43,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:43,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1455418807, now seen corresponding path program 1 times [2020-09-25 10:12:43,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:43,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753850083] [2020-09-25 10:12:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:43,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:44,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking...