/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:37,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:37,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:37,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:37,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:37,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:37,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:37,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:37,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:37,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:37,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:37,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:37,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:37,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:37,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:37,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:37,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:37,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:37,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:37,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:37,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:37,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:37,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:37,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:37,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:37,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:37,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:37,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:37,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:37,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:37,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:37,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:37,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:37,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:37,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:37,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:37,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:37,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:37,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:37,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:37,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:37,193 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 07:52:37,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:37,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:37,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:37,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:37,256 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:37,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:37,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:37,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:37,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:37,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:37,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:37,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:37,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:37,259 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:37,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:37,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:37,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:37,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:37,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:37,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:37,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:37,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:37,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:37,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:37,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:37,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:37,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:37,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:37,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:37,264 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:52:37,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:37,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:37,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:37,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:37,742 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:37,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 07:52:37,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e54794b13/a34c4311bf8740de98fb5b44effd32eb/FLAG30ba067b7 [2020-09-25 07:52:38,495 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:38,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 07:52:38,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e54794b13/a34c4311bf8740de98fb5b44effd32eb/FLAG30ba067b7 [2020-09-25 07:52:38,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e54794b13/a34c4311bf8740de98fb5b44effd32eb [2020-09-25 07:52:38,720 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:38,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:38,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:38,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:38,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:38,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:38" (1/1) ... [2020-09-25 07:52:38,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:38, skipping insertion in model container [2020-09-25 07:52:38,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:38" (1/1) ... [2020-09-25 07:52:38,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:38,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:39,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:39,292 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:39,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:39,516 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:39,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:39 WrapperNode [2020-09-25 07:52:39,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:39,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:39,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:39,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:39,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:39" (1/1) ... [2020-09-25 07:52:39,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:39" (1/1) ... [2020-09-25 07:52:39,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:39" (1/1) ... [2020-09-25 07:52:39,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:39" (1/1) ... [2020-09-25 07:52:39,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:39" (1/1) ... [2020-09-25 07:52:39,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:39" (1/1) ... [2020-09-25 07:52:39,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:39" (1/1) ... [2020-09-25 07:52:39,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:39,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:39,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:39,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:39,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:39" (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 07:52:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:41,254 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:41,255 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:41,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:41 BoogieIcfgContainer [2020-09-25 07:52:41,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:41,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:41,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:41,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:41,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:38" (1/3) ... [2020-09-25 07:52:41,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73de41d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:41, skipping insertion in model container [2020-09-25 07:52:41,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:39" (2/3) ... [2020-09-25 07:52:41,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73de41d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:41, skipping insertion in model container [2020-09-25 07:52:41,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:41" (3/3) ... [2020-09-25 07:52:41,286 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2020-09-25 07:52:41,298 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:41,317 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:41,341 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:41,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:41,389 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:41,389 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:41,389 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:41,390 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:41,390 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:41,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:41,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:52:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 07:52:41,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:41,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:41,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:41,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1323495626, now seen corresponding path program 1 times [2020-09-25 07:52:41,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:41,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34633945] [2020-09-25 07:52:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:41,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:46,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 07:52:46,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:52:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:52:46,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:46,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:52:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 07:52:46,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:52:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:47,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:47,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:47,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:52:47,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:52:47,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:47,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:47,119 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 07:52:47,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34633945] [2020-09-25 07:52:47,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:47,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:52:47,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212478783] [2020-09-25 07:52:47,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:52:47,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:47,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:52:47,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:52:47,152 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:52:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:49,438 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 07:52:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:49,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 07:52:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:49,470 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 07:52:49,470 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 07:52:49,483 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 07:52:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 07:52:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 07:52:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 07:52:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 07:52:49,598 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 141 [2020-09-25 07:52:49,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:49,599 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 07:52:49,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:52:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 07:52:49,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 07:52:49,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:49,607 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, 1, 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 07:52:49,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:49,608 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:49,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:49,609 INFO L82 PathProgramCache]: Analyzing trace with hash -427811082, now seen corresponding path program 1 times [2020-09-25 07:52:49,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:49,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515002002] [2020-09-25 07:52:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:49,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:49,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:54,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 07:52:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:52:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 07:52:54,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:54,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:52:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 07:52:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:54,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:54,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:54,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:52:54,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:54,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:52:54,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:54,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:52:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:54,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:54,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:54,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:52:54,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:52:54,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:54,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:52:54,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:54,985 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 07:52:54,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515002002] [2020-09-25 07:52:54,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:54,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:52:54,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159778067] [2020-09-25 07:52:54,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:52:54,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:54,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:52:54,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:54,990 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 07:52:56,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:56,904 INFO L93 Difference]: Finished difference Result 1753 states and 2210 transitions. [2020-09-25 07:52:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:56,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-09-25 07:52:56,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:56,923 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 07:52:56,923 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 07:52:56,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 07:52:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 07:52:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 07:52:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 07:52:56,989 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 159 [2020-09-25 07:52:56,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:56,990 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 07:52:56,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:52:56,991 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 07:52:56,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 07:52:56,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:56,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:56,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:56,996 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:56,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:56,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1927343599, now seen corresponding path program 1 times [2020-09-25 07:52:56,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:56,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094486420] [2020-09-25 07:52:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:02,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 07:53:02,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:02,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 07:53:02,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:02,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 07:53:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 07:53:02,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:02,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:02,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:02,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:02,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:53:02,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:02,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:02,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:02,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:53:02,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:53:02,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:02,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:02,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:53:02,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:02,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094486420] [2020-09-25 07:53:02,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:02,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:02,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611159344] [2020-09-25 07:53:02,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:02,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:02,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:02,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:02,294 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 5 states. [2020-09-25 07:53:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:04,483 INFO L93 Difference]: Finished difference Result 2239 states and 2968 transitions. [2020-09-25 07:53:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:04,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 07:53:04,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:04,493 INFO L225 Difference]: With dead ends: 2239 [2020-09-25 07:53:04,493 INFO L226 Difference]: Without dead ends: 1380 [2020-09-25 07:53:04,498 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 07:53:04,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-09-25 07:53:04,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1341. [2020-09-25 07:53:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-09-25 07:53:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1640 transitions. [2020-09-25 07:53:04,546 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1640 transitions. Word has length 175 [2020-09-25 07:53:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:04,547 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1640 transitions. [2020-09-25 07:53:04,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1640 transitions. [2020-09-25 07:53:04,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 07:53:04,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:04,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:04,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:53:04,554 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:04,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:04,554 INFO L82 PathProgramCache]: Analyzing trace with hash 482825858, now seen corresponding path program 1 times [2020-09-25 07:53:04,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:04,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681427724] [2020-09-25 07:53:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:05,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:05,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:09,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 07:53:09,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:09,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:53:09,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:09,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 07:53:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 07:53:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:09,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:09,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:09,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:53:09,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:09,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:09,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:09,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:09,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:09,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:53:09,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 07:53:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:09,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:53:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:09,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681427724] [2020-09-25 07:53:09,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:09,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:09,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076847447] [2020-09-25 07:53:09,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:09,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:09,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:09,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:09,892 INFO L87 Difference]: Start difference. First operand 1341 states and 1640 transitions. Second operand 5 states. [2020-09-25 07:53:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:12,397 INFO L93 Difference]: Finished difference Result 3580 states and 4555 transitions. [2020-09-25 07:53:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:12,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 07:53:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:12,418 INFO L225 Difference]: With dead ends: 3580 [2020-09-25 07:53:12,418 INFO L226 Difference]: Without dead ends: 2261 [2020-09-25 07:53:12,424 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 07:53:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-09-25 07:53:12,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1970. [2020-09-25 07:53:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1970 states. [2020-09-25 07:53:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2486 transitions. [2020-09-25 07:53:12,507 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2486 transitions. Word has length 179 [2020-09-25 07:53:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:12,507 INFO L479 AbstractCegarLoop]: Abstraction has 1970 states and 2486 transitions. [2020-09-25 07:53:12,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:12,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2486 transitions. [2020-09-25 07:53:12,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 07:53:12,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:12,520 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 07:53:12,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:53:12,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:12,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1193444011, now seen corresponding path program 1 times [2020-09-25 07:53:12,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:12,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439248725] [2020-09-25 07:53:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:15,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:17,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:17,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 07:53:17,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 07:53:17,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:17,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:53:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-09-25 07:53:17,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:17,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:17,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:17,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:17,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:17,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:17,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:53:17,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:17,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:17,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:17,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:17,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:17,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:17,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:17,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:17,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:53:17,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:53:17,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:17,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:53:17,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:53:17,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 07:53:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:17,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:17,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:17,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 07:53:17,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:53:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 07:53:17,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:17,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 07:53:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:53:18,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439248725] [2020-09-25 07:53:18,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:18,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:53:18,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535977913] [2020-09-25 07:53:18,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:53:18,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:18,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:53:18,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:53:18,029 INFO L87 Difference]: Start difference. First operand 1970 states and 2486 transitions. Second operand 6 states. [2020-09-25 07:53:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:20,164 INFO L93 Difference]: Finished difference Result 5371 states and 7394 transitions. [2020-09-25 07:53:20,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:53:20,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2020-09-25 07:53:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:20,190 INFO L225 Difference]: With dead ends: 5371 [2020-09-25 07:53:20,190 INFO L226 Difference]: Without dead ends: 3423 [2020-09-25 07:53:20,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:53:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3423 states. [2020-09-25 07:53:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3423 to 3063. [2020-09-25 07:53:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3063 states. [2020-09-25 07:53:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 3824 transitions. [2020-09-25 07:53:20,309 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 3824 transitions. Word has length 250 [2020-09-25 07:53:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:20,310 INFO L479 AbstractCegarLoop]: Abstraction has 3063 states and 3824 transitions. [2020-09-25 07:53:20,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:53:20,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 3824 transitions. [2020-09-25 07:53:20,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-25 07:53:20,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:20,326 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:20,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:53:20,326 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:20,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:20,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1156040154, now seen corresponding path program 1 times [2020-09-25 07:53:20,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:20,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867711688] [2020-09-25 07:53:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:20,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:21,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:25,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:25,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-09-25 07:53:25,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:25,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 07:53:25,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:25,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:53:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 07:53:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:25,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:25,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:25,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:25,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:53:25,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:25,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:25,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:25,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:25,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:53:25,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:53:25,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:25,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:25,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:25,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:25,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:53:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:25,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:53:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:25,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:25,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:25,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:53:25,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:53:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 07:53:25,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:25,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:53:25,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 07:53:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:25,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:25,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 07:53:25,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:25,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 07:53:25,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:25,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 07:53:25,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 158 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 07:53:25,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867711688] [2020-09-25 07:53:25,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:25,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:53:25,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224675796] [2020-09-25 07:53:25,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:53:25,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:25,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:53:25,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:25,806 INFO L87 Difference]: Start difference. First operand 3063 states and 3824 transitions. Second operand 7 states.