/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=0.3 --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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:47,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:47,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:47,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:47,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:47,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:47,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:47,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:47,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:47,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:47,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:47,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:47,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:47,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:47,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:47,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:47,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:47,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:47,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:47,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:47,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:47,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:47,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:47,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:47,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:47,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:47,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:47,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:47,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:47,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:47,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:47,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:47,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:47,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:47,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:47,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:47,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:47,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:47,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:47,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:47,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:47,131 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 12:26:47,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:47,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:47,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:47,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:47,161 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:47,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:47,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:47,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:47,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:47,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:47,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:47,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:47,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:47,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:47,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:47,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:47,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:47,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:47,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:47,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:47,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:47,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:47,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:47,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:47,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:47,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:47,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:47,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:47,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:47,167 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:26:47,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:47,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:47,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:47,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:47,657 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:47,658 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-09-25 12:26:47,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/165676e6d/f0ba334d21c3468bafb8fa6b7ff1a89e/FLAGff015be75 [2020-09-25 12:26:48,357 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:48,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-09-25 12:26:48,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/165676e6d/f0ba334d21c3468bafb8fa6b7ff1a89e/FLAGff015be75 [2020-09-25 12:26:48,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/165676e6d/f0ba334d21c3468bafb8fa6b7ff1a89e [2020-09-25 12:26:48,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:48,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:48,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:48,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:48,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:48,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:48" (1/1) ... [2020-09-25 12:26:48,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48, skipping insertion in model container [2020-09-25 12:26:48,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:48" (1/1) ... [2020-09-25 12:26:48,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:48,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:49,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:49,325 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:49,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:49,552 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:49,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:49 WrapperNode [2020-09-25 12:26:49,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:49,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:49,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:49,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:49,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:49" (1/1) ... [2020-09-25 12:26:49,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:49" (1/1) ... [2020-09-25 12:26:49,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:49" (1/1) ... [2020-09-25 12:26:49,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:49" (1/1) ... [2020-09-25 12:26:49,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:49" (1/1) ... [2020-09-25 12:26:49,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:49" (1/1) ... [2020-09-25 12:26:49,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:49" (1/1) ... [2020-09-25 12:26:49,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:49,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:49,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:49,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:49,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:51,222 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:51,223 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:51,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:51 BoogieIcfgContainer [2020-09-25 12:26:51,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:51,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:51,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:51,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:51,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:48" (1/3) ... [2020-09-25 12:26:51,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:51, skipping insertion in model container [2020-09-25 12:26:51,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:49" (2/3) ... [2020-09-25 12:26:51,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:51, skipping insertion in model container [2020-09-25 12:26:51,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:51" (3/3) ... [2020-09-25 12:26:51,243 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label32.c [2020-09-25 12:26:51,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:51,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:51,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:51,329 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:51,329 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:51,329 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:51,330 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:51,330 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:51,330 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:51,330 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:51,330 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 12:26:51,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:51,376 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] [2020-09-25 12:26:51,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:51,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:51,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1927363665, now seen corresponding path program 1 times [2020-09-25 12:26:51,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:51,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914305392] [2020-09-25 12:26:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:51,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:52,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:26:52,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:52,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-09-25 12:26:52,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:52,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:52,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:52,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:52,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 12:26:52,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:26:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:52,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:52,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:52,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:26:52,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:52,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:52,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:52,493 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 12:26:52,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914305392] [2020-09-25 12:26:52,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:52,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:52,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634975684] [2020-09-25 12:26:52,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:52,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:52,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:52,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:52,528 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:54,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:54,670 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 12:26:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:54,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-09-25 12:26:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:54,695 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 12:26:54,695 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 12:26:54,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 12:26:54,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 12:26:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 12:26:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 12:26:54,807 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 44 [2020-09-25 12:26:54,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:54,808 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 12:26:54,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:54,808 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 12:26:54,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 12:26:54,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:54,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:54,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:54,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:54,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:54,817 INFO L82 PathProgramCache]: Analyzing trace with hash -739682472, now seen corresponding path program 1 times [2020-09-25 12:26:54,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:54,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534417786] [2020-09-25 12:26:54,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:55,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:56,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:56,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:56,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 12:26:56,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1886 [2020-09-25 12:26:56,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:56,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:26:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:56,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:56,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:56,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:56,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:26:56,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:56,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:56,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:56,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:57,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:26:57,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:57,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 12:26:57,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:57,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:57,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:57,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:57,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:26:57,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:57,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534417786] [2020-09-25 12:26:57,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:57,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:26:57,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833978702] [2020-09-25 12:26:57,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:57,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:57,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:57,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:57,260 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 12:26:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:59,489 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-25 12:26:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:26:59,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-09-25 12:26:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:59,496 INFO L225 Difference]: With dead ends: 1258 [2020-09-25 12:26:59,496 INFO L226 Difference]: Without dead ends: 730 [2020-09-25 12:26:59,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:59,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-25 12:26:59,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-25 12:26:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 12:26:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-25 12:26:59,547 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 124 [2020-09-25 12:26:59,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:59,548 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-25 12:26:59,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-25 12:26:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 12:26:59,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:59,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:59,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:59,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:59,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:59,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1991578147, now seen corresponding path program 1 times [2020-09-25 12:26:59,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:59,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179053656] [2020-09-25 12:26:59,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:02,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:02,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:04,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 12:27:04,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4514 [2020-09-25 12:27:04,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:04,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 12:27:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:04,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:04,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:04,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:04,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:27:04,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:04,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:04,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:04,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:04,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:04,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:04,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:04,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:04,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 12:27:04,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:04,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:04,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:04,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:04,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179053656] [2020-09-25 12:27:04,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:04,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:04,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205753863] [2020-09-25 12:27:04,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:04,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:04,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:04,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:04,631 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 8 states. [2020-09-25 12:27:07,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:07,944 INFO L93 Difference]: Finished difference Result 1657 states and 2110 transitions. [2020-09-25 12:27:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:07,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-09-25 12:27:07,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:07,955 INFO L225 Difference]: With dead ends: 1657 [2020-09-25 12:27:07,955 INFO L226 Difference]: Without dead ends: 1123 [2020-09-25 12:27:07,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:27:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-09-25 12:27:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1046. [2020-09-25 12:27:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 12:27:08,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1270 transitions. [2020-09-25 12:27:08,003 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1270 transitions. Word has length 133 [2020-09-25 12:27:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:08,004 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1270 transitions. [2020-09-25 12:27:08,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:08,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1270 transitions. [2020-09-25 12:27:08,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 12:27:08,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:08,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:08,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:08,009 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:08,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:08,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1945552283, now seen corresponding path program 1 times [2020-09-25 12:27:08,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:08,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470367104] [2020-09-25 12:27:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:08,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 12:27:10,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:27:10,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2826 [2020-09-25 12:27:10,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 12:27:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:10,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:10,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:10,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:10,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:27:10,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:10,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:11,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:27:11,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:11,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 12:27:11,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:11,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:11,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:11,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:27:11,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:11,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470367104] [2020-09-25 12:27:11,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:11,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:11,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949691996] [2020-09-25 12:27:11,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:11,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:11,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:11,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:11,232 INFO L87 Difference]: Start difference. First operand 1046 states and 1270 transitions. Second operand 8 states. [2020-09-25 12:27:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:14,546 INFO L93 Difference]: Finished difference Result 2027 states and 2532 transitions. [2020-09-25 12:27:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:27:14,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-09-25 12:27:14,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:14,558 INFO L225 Difference]: With dead ends: 2027 [2020-09-25 12:27:14,558 INFO L226 Difference]: Without dead ends: 1489 [2020-09-25 12:27:14,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:27:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2020-09-25 12:27:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1459. [2020-09-25 12:27:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-09-25 12:27:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1738 transitions. [2020-09-25 12:27:14,624 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1738 transitions. Word has length 135 [2020-09-25 12:27:14,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:14,625 INFO L479 AbstractCegarLoop]: Abstraction has 1459 states and 1738 transitions. [2020-09-25 12:27:14,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:14,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1738 transitions. [2020-09-25 12:27:14,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 12:27:14,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:14,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:14,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:14,632 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:14,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:14,632 INFO L82 PathProgramCache]: Analyzing trace with hash -430110481, now seen corresponding path program 1 times [2020-09-25 12:27:14,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:14,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044807393] [2020-09-25 12:27:14,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:18,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 12:27:18,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:27:18,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4250 [2020-09-25 12:27:18,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:18,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:27:18,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:18,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:18,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:18,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:27:18,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:18,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:19,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 12:27:19,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 12:27:19,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:27:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:19,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044807393] [2020-09-25 12:27:19,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:19,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:19,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854003925] [2020-09-25 12:27:19,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:19,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:19,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:19,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:19,352 INFO L87 Difference]: Start difference. First operand 1459 states and 1738 transitions. Second operand 7 states. [2020-09-25 12:27:21,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:21,704 INFO L93 Difference]: Finished difference Result 2871 states and 3597 transitions. [2020-09-25 12:27:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:21,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 12:27:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:21,718 INFO L225 Difference]: With dead ends: 2871 [2020-09-25 12:27:21,719 INFO L226 Difference]: Without dead ends: 1586 [2020-09-25 12:27:21,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:27:21,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-09-25 12:27:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1518. [2020-09-25 12:27:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1518 states. [2020-09-25 12:27:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 1787 transitions. [2020-09-25 12:27:21,781 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 1787 transitions. Word has length 152 [2020-09-25 12:27:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:21,781 INFO L479 AbstractCegarLoop]: Abstraction has 1518 states and 1787 transitions. [2020-09-25 12:27:21,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 1787 transitions. [2020-09-25 12:27:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 12:27:21,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:21,785 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, 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, 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] [2020-09-25 12:27:21,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:27:21,786 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:21,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:21,786 INFO L82 PathProgramCache]: Analyzing trace with hash -718653912, now seen corresponding path program 1 times [2020-09-25 12:27:21,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:21,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488081011] [2020-09-25 12:27:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:25,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:25,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 12:27:25,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:25,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3542 [2020-09-25 12:27:25,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:25,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:25,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:25,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:25,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 12:27:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:25,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:25,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:25,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:25,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:25,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:27:25,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:25,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:25,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:25,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:25,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:25,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 12:27:25,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:25,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:27:25,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:25,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:25,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:27:25,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:25,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 12:27:25,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:25,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:27:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:25,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488081011] [2020-09-25 12:27:25,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:25,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:27:25,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440885557] [2020-09-25 12:27:25,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:27:25,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:25,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:27:25,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:25,955 INFO L87 Difference]: Start difference. First operand 1518 states and 1787 transitions. Second operand 10 states. [2020-09-25 12:27:31,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:31,155 INFO L93 Difference]: Finished difference Result 4133 states and 5381 transitions. [2020-09-25 12:27:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:27:31,158 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 203 [2020-09-25 12:27:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:31,177 INFO L225 Difference]: With dead ends: 4133 [2020-09-25 12:27:31,178 INFO L226 Difference]: Without dead ends: 3269 [2020-09-25 12:27:31,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:27:31,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2020-09-25 12:27:31,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2982. [2020-09-25 12:27:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2982 states. [2020-09-25 12:27:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 3807 transitions. [2020-09-25 12:27:31,273 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 3807 transitions. Word has length 203 [2020-09-25 12:27:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:31,273 INFO L479 AbstractCegarLoop]: Abstraction has 2982 states and 3807 transitions. [2020-09-25 12:27:31,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:27:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 3807 transitions. [2020-09-25 12:27:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 12:27:31,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:31,277 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, 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, 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 12:27:31,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:27:31,278 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:31,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1157417370, now seen corresponding path program 1 times [2020-09-25 12:27:31,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:31,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422493927] [2020-09-25 12:27:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking...