/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:07,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:07,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:07,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:07,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:07,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:07,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:07,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:07,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:07,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:07,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:07,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:07,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:07,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:07,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:07,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:07,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:07,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:07,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:07,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:07,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:07,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:07,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:07,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:07,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:07,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:07,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:07,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:07,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:07,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:07,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:07,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:07,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:07,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:07,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:07,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:07,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:07,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:07,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:07,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:07,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:07,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:40:07,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:07,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:07,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:07,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:07,300 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:07,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:07,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:07,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:07,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:07,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:07,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:07,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:07,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:07,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:07,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:07,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:07,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:07,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:07,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:07,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:07,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:07,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:07,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:07,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:07,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:07,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:07,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:07,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:07,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:07,305 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:40:07,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:07,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:07,762 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:07,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:07,764 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:07,765 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 14:40:07,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6b424e22/f4bbbf3df04a499abda086d53293edee/FLAG0df4b52db [2020-09-25 14:40:08,517 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:08,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 14:40:08,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6b424e22/f4bbbf3df04a499abda086d53293edee/FLAG0df4b52db [2020-09-25 14:40:08,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6b424e22/f4bbbf3df04a499abda086d53293edee [2020-09-25 14:40:08,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:08,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:08,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:08,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:08,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:08,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:08" (1/1) ... [2020-09-25 14:40:08,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:08, skipping insertion in model container [2020-09-25 14:40:08,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:08" (1/1) ... [2020-09-25 14:40:08,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:08,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:09,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:09,313 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:09,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:09,558 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:09,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:09 WrapperNode [2020-09-25 14:40:09,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:09,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:09,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:09,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:09,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:09" (1/1) ... [2020-09-25 14:40:09,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:09" (1/1) ... [2020-09-25 14:40:09,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:09" (1/1) ... [2020-09-25 14:40:09,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:09" (1/1) ... [2020-09-25 14:40:09,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:09" (1/1) ... [2020-09-25 14:40:09,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:09" (1/1) ... [2020-09-25 14:40:09,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:09" (1/1) ... [2020-09-25 14:40:09,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:09,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:09,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:09,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:09,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:09" (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 14:40:09,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:09,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:09,786 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:09,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:09,789 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:11,067 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:11,067 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:11,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:11 BoogieIcfgContainer [2020-09-25 14:40:11,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:11,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:11,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:11,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:11,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:08" (1/3) ... [2020-09-25 14:40:11,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:11, skipping insertion in model container [2020-09-25 14:40:11,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:09" (2/3) ... [2020-09-25 14:40:11,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:11, skipping insertion in model container [2020-09-25 14:40:11,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:11" (3/3) ... [2020-09-25 14:40:11,086 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-09-25 14:40:11,097 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:11,108 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:11,130 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:11,163 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:11,163 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:11,164 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:11,164 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:11,164 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:11,164 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:11,164 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:11,164 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 14:40:11,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:11,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:11,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:11,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:11,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1858793511, now seen corresponding path program 1 times [2020-09-25 14:40:11,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:11,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-25 14:40:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:16,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:16,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:40:16,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:40:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 14:40:16,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:16,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:40:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 14:40:16,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:40:16,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:16,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:16,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:16,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:16,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:40:16,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:16,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:40:16,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:16,842 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 14:40:16,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-25 14:40:16,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:16,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:40:16,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695889508] [2020-09-25 14:40:16,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:40:16,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:16,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:40:16,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:40:16,890 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:40:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:19,201 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 14:40:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:40:19,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 14:40:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:19,239 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 14:40:19,240 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 14:40:19,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:19,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 14:40:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 14:40:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 14:40:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 14:40:19,378 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 116 [2020-09-25 14:40:19,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:19,379 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 14:40:19,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:40:19,380 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 14:40:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 14:40:19,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:19,391 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:19,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:40:19,392 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:19,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:19,392 INFO L82 PathProgramCache]: Analyzing trace with hash 525477933, now seen corresponding path program 1 times [2020-09-25 14:40:19,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:19,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310579985] [2020-09-25 14:40:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:19,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:22,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:24,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:24,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:40:24,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:40:24,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:40:24,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:24,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 14:40:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 14:40:24,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:40:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:24,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:24,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:24,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:24,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:40:24,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:24,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:24,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 14:40:24,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:24,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:24,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:24,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:24,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:40:24,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:24,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 14:40:24,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:24,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310579985] [2020-09-25 14:40:24,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:24,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:24,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913231103] [2020-09-25 14:40:24,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:24,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:24,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:24,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:24,728 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 14:40:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:26,801 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 14:40:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:26,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 14:40:26,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:26,817 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 14:40:26,820 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 14:40:26,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:26,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 14:40:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 14:40:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 14:40:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 14:40:26,880 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 134 [2020-09-25 14:40:26,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:26,881 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 14:40:26,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:26,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 14:40:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 14:40:26,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:26,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:26,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:40:26,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:26,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:26,889 INFO L82 PathProgramCache]: Analyzing trace with hash 817356248, now seen corresponding path program 1 times [2020-09-25 14:40:26,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:26,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391329758] [2020-09-25 14:40:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:27,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:27,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:31,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 14:40:31,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:40:31,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:40:31,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:31,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:40:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 14:40:31,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:32,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:32,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:40:32,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:32,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:32,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:32,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:32,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:40:32,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:32,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 14:40:32,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:32,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:40:32,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:32,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391329758] [2020-09-25 14:40:32,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:32,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:32,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844830928] [2020-09-25 14:40:32,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:32,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:32,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:32,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:32,284 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 5 states. [2020-09-25 14:40:34,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:34,339 INFO L93 Difference]: Finished difference Result 2705 states and 3410 transitions. [2020-09-25 14:40:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:34,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 14:40:34,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:34,349 INFO L225 Difference]: With dead ends: 2705 [2020-09-25 14:40:34,350 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 14:40:34,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 14:40:34,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1648. [2020-09-25 14:40:34,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-09-25 14:40:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1962 transitions. [2020-09-25 14:40:34,406 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1962 transitions. Word has length 140 [2020-09-25 14:40:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:34,407 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 1962 transitions. [2020-09-25 14:40:34,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1962 transitions. [2020-09-25 14:40:34,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 14:40:34,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:34,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:34,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:34,414 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:34,414 INFO L82 PathProgramCache]: Analyzing trace with hash 978323725, now seen corresponding path program 1 times [2020-09-25 14:40:34,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:34,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142344707] [2020-09-25 14:40:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:39,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 14:40:39,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:39,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 14:40:39,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:39,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 14:40:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 14:40:39,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:39,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:39,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:40:39,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:39,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:39,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:39,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:39,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:40:39,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 14:40:39,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:39,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:40:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:39,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142344707] [2020-09-25 14:40:39,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:39,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:39,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701265048] [2020-09-25 14:40:39,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:39,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:39,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:39,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:39,754 INFO L87 Difference]: Start difference. First operand 1648 states and 1962 transitions. Second operand 5 states. [2020-09-25 14:40:41,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:41,559 INFO L93 Difference]: Finished difference Result 3932 states and 4899 transitions. [2020-09-25 14:40:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:41,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-25 14:40:41,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:41,575 INFO L225 Difference]: With dead ends: 3932 [2020-09-25 14:40:41,575 INFO L226 Difference]: Without dead ends: 2306 [2020-09-25 14:40:41,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2020-09-25 14:40:41,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2256. [2020-09-25 14:40:41,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2256 states. [2020-09-25 14:40:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2687 transitions. [2020-09-25 14:40:41,672 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2687 transitions. Word has length 151 [2020-09-25 14:40:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:41,673 INFO L479 AbstractCegarLoop]: Abstraction has 2256 states and 2687 transitions. [2020-09-25 14:40:41,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2687 transitions. [2020-09-25 14:40:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 14:40:41,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:41,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:41,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:40:41,682 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:41,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:41,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1663974214, now seen corresponding path program 1 times [2020-09-25 14:40:41,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:41,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932391043] [2020-09-25 14:40:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:42,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:42,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:46,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 14:40:46,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:40:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:40:46,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:46,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:40:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:40:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:40:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:46,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:46,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:46,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:46,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:40:46,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:46,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:46,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:40:46,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:46,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:46,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:46,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:40:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:40:46,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:46,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:40:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:46,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:40:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:46,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:46,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:40:46,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:46,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:40:46,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:46,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:40:46,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:40:46,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932391043] [2020-09-25 14:40:46,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:46,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:40:46,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521392737] [2020-09-25 14:40:46,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:40:46,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:46,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:40:46,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:40:46,994 INFO L87 Difference]: Start difference. First operand 2256 states and 2687 transitions. Second operand 7 states. [2020-09-25 14:40:49,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:49,161 INFO L93 Difference]: Finished difference Result 5886 states and 7302 transitions. [2020-09-25 14:40:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:40:49,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 14:40:49,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:49,183 INFO L225 Difference]: With dead ends: 5886 [2020-09-25 14:40:49,183 INFO L226 Difference]: Without dead ends: 3652 [2020-09-25 14:40:49,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:40:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2020-09-25 14:40:49,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3325. [2020-09-25 14:40:49,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3325 states. [2020-09-25 14:40:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 3972 transitions. [2020-09-25 14:40:49,331 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 3972 transitions. Word has length 153 [2020-09-25 14:40:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:49,332 INFO L479 AbstractCegarLoop]: Abstraction has 3325 states and 3972 transitions. [2020-09-25 14:40:49,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:40:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 3972 transitions. [2020-09-25 14:40:49,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 14:40:49,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:49,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:49,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:40:49,346 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:49,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:49,346 INFO L82 PathProgramCache]: Analyzing trace with hash -488871135, now seen corresponding path program 1 times [2020-09-25 14:40:49,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:49,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099757090] [2020-09-25 14:40:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:49,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:49,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:50,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:50,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking...