/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=SMALLEST --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/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:09,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:09,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:09,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:09,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:09,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:09,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:09,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:09,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:09,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:09,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:09,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:09,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:09,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:09,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:09,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:09,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:09,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:09,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:09,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:09,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:09,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:09,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:09,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:09,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:09,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:09,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:09,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:09,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:09,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:09,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:09,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:09,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:09,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:09,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:09,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:09,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:09,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:09,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:09,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:09,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:09,302 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 [2020-09-24 18:19:09,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:09,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:09,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:09,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:09,341 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:09,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:09,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:09,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:09,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:09,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:09,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:09,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:09,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:09,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:09,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:09,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:09,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:09,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:09,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:09,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:09,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:09,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:09,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:09,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:09,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:09,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:09,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:09,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:09,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:09,346 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:19:09,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:09,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:09,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:09,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:09,846 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:09,847 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-24 18:19:09,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/101c6113e/a6d32ba7192e4eb980dd05fbde2829df/FLAG755e5d401 [2020-09-24 18:19:10,583 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:10,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-24 18:19:10,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/101c6113e/a6d32ba7192e4eb980dd05fbde2829df/FLAG755e5d401 [2020-09-24 18:19:10,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/101c6113e/a6d32ba7192e4eb980dd05fbde2829df [2020-09-24 18:19:10,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:10,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:10,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:10,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:10,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:10,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:10" (1/1) ... [2020-09-24 18:19:10,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e28bb4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:10, skipping insertion in model container [2020-09-24 18:19:10,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:10" (1/1) ... [2020-09-24 18:19:10,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:10,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:11,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:11,475 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:11,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:11,815 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:11,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:11 WrapperNode [2020-09-24 18:19:11,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:11,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:11,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:11,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:11,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:11" (1/1) ... [2020-09-24 18:19:11,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:11" (1/1) ... [2020-09-24 18:19:11,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:11" (1/1) ... [2020-09-24 18:19:11,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:11" (1/1) ... [2020-09-24 18:19:11,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:11" (1/1) ... [2020-09-24 18:19:11,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:11" (1/1) ... [2020-09-24 18:19:11,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:11" (1/1) ... [2020-09-24 18:19:11,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:11,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:11,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:11,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:11,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:11" (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 [2020-09-24 18:19:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:19:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:19:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:13,688 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:13,688 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:19:13,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:13 BoogieIcfgContainer [2020-09-24 18:19:13,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:13,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:13,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:13,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:13,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:10" (1/3) ... [2020-09-24 18:19:13,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c248f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:13, skipping insertion in model container [2020-09-24 18:19:13,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:11" (2/3) ... [2020-09-24 18:19:13,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c248f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:13, skipping insertion in model container [2020-09-24 18:19:13,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:13" (3/3) ... [2020-09-24 18:19:13,708 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-24 18:19:13,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:13,731 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:13,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:13,787 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:13,787 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:13,788 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:13,788 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:13,788 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:13,788 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:13,788 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:13,789 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:13,828 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:19:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 18:19:13,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:13,851 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] [2020-09-24 18:19:13,851 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:13,860 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-24 18:19:13,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:13,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521608629] [2020-09-24 18:19:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:14,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:19,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:19,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:19:19,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:19:19,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:19:19,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:19:19,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 18:19:19,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:19:19,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:19,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:19,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:19,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:19:19,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:19:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:19,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521608629] [2020-09-24 18:19:19,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:19,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:19:19,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062099654] [2020-09-24 18:19:19,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:19,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:19,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:19,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:19,509 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-24 18:19:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:22,611 INFO L93 Difference]: Finished difference Result 1449 states and 1984 transitions. [2020-09-24 18:19:22,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:19:22,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-09-24 18:19:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:22,643 INFO L225 Difference]: With dead ends: 1449 [2020-09-24 18:19:22,643 INFO L226 Difference]: Without dead ends: 870 [2020-09-24 18:19:22,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:19:22,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-09-24 18:19:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 746. [2020-09-24 18:19:22,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-24 18:19:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 908 transitions. [2020-09-24 18:19:22,799 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 908 transitions. Word has length 122 [2020-09-24 18:19:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:22,800 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 908 transitions. [2020-09-24 18:19:22,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:19:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 908 transitions. [2020-09-24 18:19:22,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 18:19:22,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:22,812 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:19:22,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:19:22,813 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:22,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:22,813 INFO L82 PathProgramCache]: Analyzing trace with hash 812216710, now seen corresponding path program 1 times [2020-09-24 18:19:22,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:22,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396611671] [2020-09-24 18:19:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:22,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 18:19:24,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1220 [2020-09-24 18:19:24,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:24,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:19:24,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 18:19:24,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:24,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:24,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:24,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:19:24,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:24,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:24,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:24,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:19:24,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:19:24,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:24,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396611671] [2020-09-24 18:19:24,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:24,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:19:24,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863732532] [2020-09-24 18:19:24,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:24,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:24,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:24,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:24,383 INFO L87 Difference]: Start difference. First operand 746 states and 908 transitions. Second operand 5 states. [2020-09-24 18:19:26,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:26,469 INFO L93 Difference]: Finished difference Result 1955 states and 2479 transitions. [2020-09-24 18:19:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:19:26,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-24 18:19:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:26,480 INFO L225 Difference]: With dead ends: 1955 [2020-09-24 18:19:26,480 INFO L226 Difference]: Without dead ends: 1233 [2020-09-24 18:19:26,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:19:26,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-24 18:19:26,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1177. [2020-09-24 18:19:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-24 18:19:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1467 transitions. [2020-09-24 18:19:26,541 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1467 transitions. Word has length 143 [2020-09-24 18:19:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:26,542 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1467 transitions. [2020-09-24 18:19:26,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:19:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1467 transitions. [2020-09-24 18:19:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 18:19:26,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:26,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:26,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:19:26,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:26,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:26,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1603318008, now seen corresponding path program 1 times [2020-09-24 18:19:26,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:26,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201480414] [2020-09-24 18:19:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:27,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:28,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:31,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 18:19:31,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:19:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 18:19:31,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:19:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:19:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:31,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:31,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:31,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:31,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:19:31,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:19:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:31,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:31,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:31,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:19:31,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:31,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 18:19:31,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:19:31,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:31,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201480414] [2020-09-24 18:19:31,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:31,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:19:31,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718619947] [2020-09-24 18:19:31,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:19:31,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:31,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:19:31,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:19:31,899 INFO L87 Difference]: Start difference. First operand 1177 states and 1467 transitions. Second operand 7 states. [2020-09-24 18:19:33,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:33,952 INFO L93 Difference]: Finished difference Result 3026 states and 3946 transitions. [2020-09-24 18:19:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:19:33,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-09-24 18:19:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:33,974 INFO L225 Difference]: With dead ends: 3026 [2020-09-24 18:19:33,974 INFO L226 Difference]: Without dead ends: 1873 [2020-09-24 18:19:33,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:19:33,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2020-09-24 18:19:34,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1800. [2020-09-24 18:19:34,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-24 18:19:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2218 transitions. [2020-09-24 18:19:34,088 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2218 transitions. Word has length 159 [2020-09-24 18:19:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:34,090 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 2218 transitions. [2020-09-24 18:19:34,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:19:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2218 transitions. [2020-09-24 18:19:34,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 18:19:34,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:34,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:34,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:19:34,105 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:34,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:34,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1118935241, now seen corresponding path program 1 times [2020-09-24 18:19:34,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:34,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68666579] [2020-09-24 18:19:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:34,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:34,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:35,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:36,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:39,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 18:19:39,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:19:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:19:39,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 18:19:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 18:19:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:39,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:39,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:19:39,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:39,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:19:39,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:39,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 18:19:39,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:19:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:39,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68666579] [2020-09-24 18:19:39,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:39,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:19:39,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969152051] [2020-09-24 18:19:39,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:39,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:39,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:39,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:39,471 INFO L87 Difference]: Start difference. First operand 1800 states and 2218 transitions. Second operand 5 states. [2020-09-24 18:19:42,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:42,014 INFO L93 Difference]: Finished difference Result 4716 states and 5890 transitions. [2020-09-24 18:19:42,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:19:42,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-24 18:19:42,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:42,034 INFO L225 Difference]: With dead ends: 4716 [2020-09-24 18:19:42,035 INFO L226 Difference]: Without dead ends: 2940 [2020-09-24 18:19:42,042 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 [2020-09-24 18:19:42,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-09-24 18:19:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2813. [2020-09-24 18:19:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2813 states. [2020-09-24 18:19:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 3439 transitions. [2020-09-24 18:19:42,142 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 3439 transitions. Word has length 165 [2020-09-24 18:19:42,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:42,143 INFO L479 AbstractCegarLoop]: Abstraction has 2813 states and 3439 transitions. [2020-09-24 18:19:42,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:19:42,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 3439 transitions. [2020-09-24 18:19:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 18:19:42,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:42,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:42,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:19:42,156 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:42,157 INFO L82 PathProgramCache]: Analyzing trace with hash 2047633557, now seen corresponding path program 1 times [2020-09-24 18:19:42,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:42,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586767937] [2020-09-24 18:19:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:42,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:42,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:42,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:43,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:46,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:47,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 18:19:47,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:19:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:19:47,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-24 18:19:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 18:19:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:47,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:47,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:47,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:47,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:47,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:19:47,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:47,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:47,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:47,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:47,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:47,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 18:19:47,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:47,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 18:19:47,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:19:47,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:47,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586767937] [2020-09-24 18:19:47,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:47,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:19:47,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670376746] [2020-09-24 18:19:47,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:47,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:47,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:47,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:47,509 INFO L87 Difference]: Start difference. First operand 2813 states and 3439 transitions. Second operand 5 states. [2020-09-24 18:19:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:49,375 INFO L93 Difference]: Finished difference Result 3698 states and 4542 transitions. [2020-09-24 18:19:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:19:49,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-24 18:19:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:49,396 INFO L225 Difference]: With dead ends: 3698 [2020-09-24 18:19:49,396 INFO L226 Difference]: Without dead ends: 3696 [2020-09-24 18:19:49,399 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 [2020-09-24 18:19:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2020-09-24 18:19:49,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 3107. [2020-09-24 18:19:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2020-09-24 18:19:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 3836 transitions. [2020-09-24 18:19:49,505 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 3836 transitions. Word has length 171 [2020-09-24 18:19:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:49,506 INFO L479 AbstractCegarLoop]: Abstraction has 3107 states and 3836 transitions. [2020-09-24 18:19:49,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:19:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 3836 transitions. [2020-09-24 18:19:49,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-24 18:19:49,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:49,519 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:49,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:19:49,519 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:49,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:49,520 INFO L82 PathProgramCache]: Analyzing trace with hash -488821343, now seen corresponding path program 1 times [2020-09-24 18:19:49,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:49,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495187180] [2020-09-24 18:19:49,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:50,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:54,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-24 18:19:54,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:19:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-24 18:19:54,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-09-24 18:19:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 18:19:54,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:54,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:54,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:54,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:19:54,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:54,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:19:54,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:19:54,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:54,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:54,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 18:19:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:54,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:54,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 18:19:54,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:19:54,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 18:19:54,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 18:19:54,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495187180] [2020-09-24 18:19:54,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:54,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:19:54,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493175907] [2020-09-24 18:19:54,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:54,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:54,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:54,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:54,858 INFO L87 Difference]: Start difference. First operand 3107 states and 3836 transitions. Second operand 5 states. [2020-09-24 18:19:56,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:56,726 INFO L93 Difference]: Finished difference Result 3836 states and 4706 transitions. [2020-09-24 18:19:56,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:19:56,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-09-24 18:19:56,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:56,747 INFO L225 Difference]: With dead ends: 3836 [2020-09-24 18:19:56,748 INFO L226 Difference]: Without dead ends: 3834 [2020-09-24 18:19:56,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:19:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2020-09-24 18:19:56,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 2968. [2020-09-24 18:19:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2968 states. [2020-09-24 18:19:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 3638 transitions. [2020-09-24 18:19:56,834 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 3638 transitions. Word has length 206 [2020-09-24 18:19:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:56,835 INFO L479 AbstractCegarLoop]: Abstraction has 2968 states and 3638 transitions. [2020-09-24 18:19:56,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:19:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 3638 transitions. [2020-09-24 18:19:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 18:19:56,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:56,849 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:56,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:19:56,850 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:56,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:56,850 INFO L82 PathProgramCache]: Analyzing trace with hash -839934027, now seen corresponding path program 1 times [2020-09-24 18:19:56,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:56,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120774494] [2020-09-24 18:19:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:56,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking...