/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:51,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:51,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:51,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:51,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:51,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:51,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:51,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:51,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:51,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:51,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:51,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:51,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:51,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:51,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:51,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:51,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:51,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:51,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:51,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:51,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:51,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:51,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:51,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:51,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:51,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:51,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:51,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:51,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:51,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:51,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:51,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:51,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:51,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:51,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:51,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:51,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:51,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:51,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:51,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:51,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:51,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:12:51,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:51,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:51,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:51,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:51,293 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:51,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:51,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:51,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:51,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:51,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:51,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:51,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:51,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:51,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:51,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:51,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:51,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:51,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:51,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:51,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:51,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:51,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:51,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:51,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:51,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:51,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:51,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:51,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:51,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:51,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:12:51,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:51,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:51,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:51,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:51,773 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:51,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 10:12:51,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be505b106/2e48da2ae3b14f81a369360266e88719/FLAG14df4d996 [2020-09-25 10:12:52,565 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:52,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 10:12:52,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be505b106/2e48da2ae3b14f81a369360266e88719/FLAG14df4d996 [2020-09-25 10:12:52,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be505b106/2e48da2ae3b14f81a369360266e88719 [2020-09-25 10:12:52,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:52,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:52,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:52,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:52,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:52,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:52" (1/1) ... [2020-09-25 10:12:52,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58419e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:52, skipping insertion in model container [2020-09-25 10:12:52,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:52" (1/1) ... [2020-09-25 10:12:52,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:52,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:53,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:53,450 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:53,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:53,708 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:53,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53 WrapperNode [2020-09-25 10:12:53,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:53,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:53,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:53,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:53,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53" (1/1) ... [2020-09-25 10:12:53,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53" (1/1) ... [2020-09-25 10:12:53,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53" (1/1) ... [2020-09-25 10:12:53,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53" (1/1) ... [2020-09-25 10:12:53,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53" (1/1) ... [2020-09-25 10:12:53,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53" (1/1) ... [2020-09-25 10:12:53,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53" (1/1) ... [2020-09-25 10:12:53,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:53,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:53,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:53,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:53,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:53,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:53,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:53,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:53,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:55,492 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:55,492 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:55,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:55 BoogieIcfgContainer [2020-09-25 10:12:55,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:55,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:55,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:55,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:55,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:52" (1/3) ... [2020-09-25 10:12:55,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec20408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:55, skipping insertion in model container [2020-09-25 10:12:55,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:53" (2/3) ... [2020-09-25 10:12:55,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec20408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:55, skipping insertion in model container [2020-09-25 10:12:55,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:55" (3/3) ... [2020-09-25 10:12:55,512 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-09-25 10:12:55,525 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:55,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:55,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:55,599 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:55,600 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:55,600 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:55,600 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:55,600 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:55,600 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:55,601 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:55,601 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:55,632 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:55,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 10:12:55,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:55,646 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] [2020-09-25 10:12:55,646 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:55,655 INFO L82 PathProgramCache]: Analyzing trace with hash -193504545, now seen corresponding path program 1 times [2020-09-25 10:12:55,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:55,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400951559] [2020-09-25 10:12:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:56,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:57,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 10:12:57,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:57,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-09-25 10:12:57,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:57,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:12:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:57,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:57,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:57,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:57,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:12:57,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:57,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:57,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:57,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400951559] [2020-09-25 10:12:57,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:57,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:12:57,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989340558] [2020-09-25 10:12:57,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:12:57,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:57,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:12:57,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:57,643 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 10:13:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:00,403 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 10:13:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:13:00,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-09-25 10:13:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:00,432 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 10:13:00,432 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 10:13:00,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:00,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 10:13:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 10:13:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 10:13:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 10:13:00,573 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 61 [2020-09-25 10:13:00,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:00,574 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 10:13:00,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:13:00,596 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 10:13:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 10:13:00,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:00,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:00,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:00,608 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:00,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:00,609 INFO L82 PathProgramCache]: Analyzing trace with hash 75508103, now seen corresponding path program 1 times [2020-09-25 10:13:00,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:00,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224121688] [2020-09-25 10:13:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:05,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:05,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 10:13:05,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:13:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:05,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:13:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 10:13:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:05,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:05,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:05,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:05,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:05,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:13:05,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:05,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:05,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:05,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:06,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:13:06,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 10:13:06,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:06,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:13:06,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:06,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224121688] [2020-09-25 10:13:06,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:06,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:13:06,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739099374] [2020-09-25 10:13:06,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:13:06,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:06,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:13:06,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:06,355 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 11 states. [2020-09-25 10:13:09,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:09,197 INFO L93 Difference]: Finished difference Result 1731 states and 2374 transitions. [2020-09-25 10:13:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:13:09,198 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 144 [2020-09-25 10:13:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:09,207 INFO L225 Difference]: With dead ends: 1731 [2020-09-25 10:13:09,207 INFO L226 Difference]: Without dead ends: 1009 [2020-09-25 10:13:09,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:13:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-09-25 10:13:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 839. [2020-09-25 10:13:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-09-25 10:13:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1080 transitions. [2020-09-25 10:13:09,279 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1080 transitions. Word has length 144 [2020-09-25 10:13:09,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:09,281 INFO L479 AbstractCegarLoop]: Abstraction has 839 states and 1080 transitions. [2020-09-25 10:13:09,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:13:09,282 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1080 transitions. [2020-09-25 10:13:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 10:13:09,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:09,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:09,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:09,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:09,296 INFO L82 PathProgramCache]: Analyzing trace with hash 118153746, now seen corresponding path program 1 times [2020-09-25 10:13:09,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:09,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013907674] [2020-09-25 10:13:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:13,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 10:13:13,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:13,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4145 [2020-09-25 10:13:13,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:13,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 10:13:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:13,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:13,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:13,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:13,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:13:13,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:13,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:13,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:13,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:13,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:13,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:13,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:13,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:13,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:13,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 10:13:13,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:13,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:13,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:13,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013907674] [2020-09-25 10:13:13,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:13,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:13,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597160306] [2020-09-25 10:13:13,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:13,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:13,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:13,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:13,873 INFO L87 Difference]: Start difference. First operand 839 states and 1080 transitions. Second operand 8 states. [2020-09-25 10:13:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:17,087 INFO L93 Difference]: Finished difference Result 2235 states and 3008 transitions. [2020-09-25 10:13:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:13:17,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2020-09-25 10:13:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:17,105 INFO L225 Difference]: With dead ends: 2235 [2020-09-25 10:13:17,105 INFO L226 Difference]: Without dead ends: 1411 [2020-09-25 10:13:17,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:13:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2020-09-25 10:13:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1182. [2020-09-25 10:13:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2020-09-25 10:13:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1505 transitions. [2020-09-25 10:13:17,188 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1505 transitions. Word has length 150 [2020-09-25 10:13:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:17,191 INFO L479 AbstractCegarLoop]: Abstraction has 1182 states and 1505 transitions. [2020-09-25 10:13:17,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:17,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1505 transitions. [2020-09-25 10:13:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 10:13:17,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:17,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:17,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:17,198 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:17,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:17,199 INFO L82 PathProgramCache]: Analyzing trace with hash -403760050, now seen corresponding path program 1 times [2020-09-25 10:13:17,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:17,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253017811] [2020-09-25 10:13:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:20,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 10:13:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:13:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:22,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 10:13:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:22,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:22,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:22,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:13:22,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:22,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:22,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:22,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:22,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:22,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:23,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:23,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:13:23,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-09-25 10:13:23,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:23,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:23,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:23,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:23,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 10:13:23,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:23,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253017811] [2020-09-25 10:13:23,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:23,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:13:23,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742258058] [2020-09-25 10:13:23,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:13:23,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:23,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:13:23,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:23,372 INFO L87 Difference]: Start difference. First operand 1182 states and 1505 transitions. Second operand 10 states. [2020-09-25 10:13:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:26,378 INFO L93 Difference]: Finished difference Result 3295 states and 4385 transitions. [2020-09-25 10:13:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:13:26,379 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 183 [2020-09-25 10:13:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:26,395 INFO L225 Difference]: With dead ends: 3295 [2020-09-25 10:13:26,395 INFO L226 Difference]: Without dead ends: 2270 [2020-09-25 10:13:26,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:13:26,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2020-09-25 10:13:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1948. [2020-09-25 10:13:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-09-25 10:13:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2427 transitions. [2020-09-25 10:13:26,478 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2427 transitions. Word has length 183 [2020-09-25 10:13:26,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:26,478 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2427 transitions. [2020-09-25 10:13:26,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:13:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2427 transitions. [2020-09-25 10:13:26,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 10:13:26,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:26,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:13:26,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:26,486 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:26,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:26,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1501396597, now seen corresponding path program 1 times [2020-09-25 10:13:26,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:26,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994577321] [2020-09-25 10:13:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:26,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:27,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:30,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:31,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:31,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 10:13:31,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:13:31,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:13:31,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:31,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:31,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:13:31,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:31,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-09-25 10:13:31,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:31,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:31,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:31,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:31,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:31,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:31,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:13:31,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:31,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:31,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:31,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:31,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:31,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:31,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:13:31,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:31,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 10:13:31,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:31,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 10:13:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 10:13:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:32,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:32,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:32,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:32,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:32,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:32,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 10:13:32,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:32,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 93 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:13:32,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994577321] [2020-09-25 10:13:32,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:32,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:13:32,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247841943] [2020-09-25 10:13:32,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:13:32,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:32,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:13:32,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:32,411 INFO L87 Difference]: Start difference. First operand 1948 states and 2427 transitions. Second operand 11 states. [2020-09-25 10:13:37,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:37,595 INFO L93 Difference]: Finished difference Result 6058 states and 7799 transitions. [2020-09-25 10:13:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 10:13:37,596 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 235 [2020-09-25 10:13:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:37,624 INFO L225 Difference]: With dead ends: 6058 [2020-09-25 10:13:37,624 INFO L226 Difference]: Without dead ends: 4619 [2020-09-25 10:13:37,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:13:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4619 states. [2020-09-25 10:13:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4619 to 2801. [2020-09-25 10:13:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2020-09-25 10:13:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3540 transitions. [2020-09-25 10:13:37,788 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3540 transitions. Word has length 235 [2020-09-25 10:13:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:37,789 INFO L479 AbstractCegarLoop]: Abstraction has 2801 states and 3540 transitions. [2020-09-25 10:13:37,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:13:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3540 transitions. [2020-09-25 10:13:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 10:13:37,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:37,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:13:37,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:37,797 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:37,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:37,797 INFO L82 PathProgramCache]: Analyzing trace with hash -2043617017, now seen corresponding path program 1 times [2020-09-25 10:13:37,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:37,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079712868] [2020-09-25 10:13:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:37,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:37,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:37,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:38,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking...