/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:41:55,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:41:55,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:41:55,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:41:55,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:41:55,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:41:55,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:41:55,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:41:55,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:41:55,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:41:55,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:41:55,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:41:55,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:41:55,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:41:55,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:41:55,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:41:55,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:41:55,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:41:55,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:41:55,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:41:55,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:41:55,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:41:55,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:41:55,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:41:55,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:41:55,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:41:55,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:41:55,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:41:55,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:41:55,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:41:55,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:41:55,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:41:55,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:41:55,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:41:55,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:41:55,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:41:55,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:41:55,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:41:55,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:41:55,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:41:55,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:41:55,203 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 06:41:55,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:41:55,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:41:55,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:41:55,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:41:55,236 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:41:55,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:41:55,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:41:55,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:41:55,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:41:55,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:41:55,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:41:55,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:41:55,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:41:55,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:41:55,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:41:55,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:41:55,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:41:55,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:41:55,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:41:55,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:41:55,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:41:55,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:55,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:41:55,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:41:55,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:41:55,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:41:55,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:41:55,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:41:55,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:41:55,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:41:55,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:41:55,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:41:55,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:41:55,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:41:55,712 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:41:55,713 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 06:41:55,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/768f27017/641a1113700b4e82b873a9b3a7dfde87/FLAG94caeb82a [2020-09-25 06:41:56,424 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:41:56,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 06:41:56,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/768f27017/641a1113700b4e82b873a9b3a7dfde87/FLAG94caeb82a [2020-09-25 06:41:56,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/768f27017/641a1113700b4e82b873a9b3a7dfde87 [2020-09-25 06:41:56,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:41:56,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:41:56,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:56,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:41:56,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:41:56,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:56" (1/1) ... [2020-09-25 06:41:56,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a03fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:56, skipping insertion in model container [2020-09-25 06:41:56,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:56" (1/1) ... [2020-09-25 06:41:56,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:41:56,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:41:57,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:57,278 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:41:57,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:57,498 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:41:57,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:57 WrapperNode [2020-09-25 06:41:57,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:57,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:41:57,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:41:57,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:41:57,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:57" (1/1) ... [2020-09-25 06:41:57,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:57" (1/1) ... [2020-09-25 06:41:57,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:57" (1/1) ... [2020-09-25 06:41:57,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:57" (1/1) ... [2020-09-25 06:41:57,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:57" (1/1) ... [2020-09-25 06:41:57,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:57" (1/1) ... [2020-09-25 06:41:57,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:57" (1/1) ... [2020-09-25 06:41:57,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:41:57,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:41:57,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:41:57,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:41:57,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:57" (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 06:41:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:41:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:41:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:41:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:41:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:41:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:41:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:41:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:41:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:41:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:41:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:41:59,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:41:59,099 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:41:59,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:59 BoogieIcfgContainer [2020-09-25 06:41:59,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:41:59,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:41:59,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:41:59,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:41:59,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:41:56" (1/3) ... [2020-09-25 06:41:59,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b6419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:59, skipping insertion in model container [2020-09-25 06:41:59,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:57" (2/3) ... [2020-09-25 06:41:59,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b6419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:59, skipping insertion in model container [2020-09-25 06:41:59,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:59" (3/3) ... [2020-09-25 06:41:59,119 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-25 06:41:59,130 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:41:59,142 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:41:59,165 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:41:59,201 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:41:59,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:41:59,201 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:41:59,201 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:41:59,202 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:41:59,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:41:59,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:41:59,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:41:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:41:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 06:41:59,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:59,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:59,258 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-25 06:41:59,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:59,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234330163] [2020-09-25 06:41:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:04,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:04,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 06:42:04,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:42:04,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-09-25 06:42:04,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:04,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:42:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 06:42:04,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 06:42:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:04,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:05,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:05,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:05,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:42:05,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:05,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:42:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:05,131 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 06:42:05,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234330163] [2020-09-25 06:42:05,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:05,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:42:05,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975370064] [2020-09-25 06:42:05,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:42:05,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:05,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:42:05,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:42:05,165 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:42:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:07,394 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 06:42:07,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:42:07,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 06:42:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:07,422 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 06:42:07,423 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 06:42:07,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:07,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 06:42:07,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 06:42:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:42:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 06:42:07,547 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 141 [2020-09-25 06:42:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:07,548 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 06:42:07,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:42:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 06:42:07,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 06:42:07,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:07,558 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:07,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:42:07,558 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:07,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1572128645, now seen corresponding path program 1 times [2020-09-25 06:42:07,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:07,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9299225] [2020-09-25 06:42:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:11,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:12,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:12,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:12,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 06:42:12,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:42:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:42:12,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:12,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:42:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:42:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:12,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:12,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:12,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 06:42:12,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:12,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:12,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:12,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:12,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:12,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:12,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 06:42:12,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:12,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:12,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:12,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9299225] [2020-09-25 06:42:12,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:12,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:42:12,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319006666] [2020-09-25 06:42:12,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:12,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:12,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:12,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:12,938 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 06:42:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:15,406 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 06:42:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:15,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 06:42:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:15,417 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 06:42:15,418 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 06:42:15,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:15,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 06:42:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 06:42:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 06:42:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1174 transitions. [2020-09-25 06:42:15,470 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1174 transitions. Word has length 162 [2020-09-25 06:42:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:15,471 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1174 transitions. [2020-09-25 06:42:15,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1174 transitions. [2020-09-25 06:42:15,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 06:42:15,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:15,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:15,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:42:15,477 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:15,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:15,478 INFO L82 PathProgramCache]: Analyzing trace with hash 127836767, now seen corresponding path program 1 times [2020-09-25 06:42:15,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:15,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522816922] [2020-09-25 06:42:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:20,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 06:42:20,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:20,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:42:20,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:20,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:42:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:42:20,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:20,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:20,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:20,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:20,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:42:20,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:20,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:20,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:42:20,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:20,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:20,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:20,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:42:20,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:20,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:42:20,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:20,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:42:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:20,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522816922] [2020-09-25 06:42:20,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:20,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:42:20,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812552864] [2020-09-25 06:42:20,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:42:20,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:20,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:42:20,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:42:20,855 INFO L87 Difference]: Start difference. First operand 966 states and 1174 transitions. Second operand 8 states. [2020-09-25 06:42:23,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:23,834 INFO L93 Difference]: Finished difference Result 3165 states and 4132 transitions. [2020-09-25 06:42:23,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:42:23,835 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-09-25 06:42:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:23,857 INFO L225 Difference]: With dead ends: 3165 [2020-09-25 06:42:23,857 INFO L226 Difference]: Without dead ends: 2223 [2020-09-25 06:42:23,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:42:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-09-25 06:42:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2068. [2020-09-25 06:42:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-09-25 06:42:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2597 transitions. [2020-09-25 06:42:23,968 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2597 transitions. Word has length 163 [2020-09-25 06:42:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:23,968 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2597 transitions. [2020-09-25 06:42:23,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:42:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2597 transitions. [2020-09-25 06:42:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 06:42:23,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:23,983 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:23,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:42:23,991 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:23,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1373458601, now seen corresponding path program 1 times [2020-09-25 06:42:23,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:23,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390710794] [2020-09-25 06:42:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:28,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:28,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 06:42:29,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:29,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:42:29,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:29,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:42:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:42:29,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:29,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:29,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:29,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:42:29,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:29,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:29,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:29,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:29,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:29,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:29,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:42:29,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:29,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:29,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:42:29,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:29,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:29,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:29,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:29,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 06:42:29,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:29,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:29,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:29,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:29,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:42:29,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:29,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390710794] [2020-09-25 06:42:29,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:29,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:29,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020650357] [2020-09-25 06:42:29,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:29,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:29,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:29,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:29,357 INFO L87 Difference]: Start difference. First operand 2068 states and 2597 transitions. Second operand 7 states. [2020-09-25 06:42:31,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:31,612 INFO L93 Difference]: Finished difference Result 4591 states and 5920 transitions. [2020-09-25 06:42:31,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:31,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 06:42:31,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:31,630 INFO L225 Difference]: With dead ends: 4591 [2020-09-25 06:42:31,630 INFO L226 Difference]: Without dead ends: 2547 [2020-09-25 06:42:31,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2020-09-25 06:42:31,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2288. [2020-09-25 06:42:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2020-09-25 06:42:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 2818 transitions. [2020-09-25 06:42:31,717 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 2818 transitions. Word has length 193 [2020-09-25 06:42:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:31,718 INFO L479 AbstractCegarLoop]: Abstraction has 2288 states and 2818 transitions. [2020-09-25 06:42:31,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 2818 transitions. [2020-09-25 06:42:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 06:42:31,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:31,728 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:31,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:42:31,729 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:31,729 INFO L82 PathProgramCache]: Analyzing trace with hash 82298840, now seen corresponding path program 1 times [2020-09-25 06:42:31,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:31,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747013287] [2020-09-25 06:42:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:31,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:35,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:35,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:36,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:36,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 06:42:36,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 06:42:36,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:42:36,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:36,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:36,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:36,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 06:42:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 06:42:36,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:36,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:36,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:36,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:36,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:42:36,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:36,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:36,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:37,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:42:37,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:37,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 06:42:37,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:37,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:37,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:37,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:42:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:37,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:37,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:42:37,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 06:42:37,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:37,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:42:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 06:42:37,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747013287] [2020-09-25 06:42:37,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:37,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:42:37,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520088015] [2020-09-25 06:42:37,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:37,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:37,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:37,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:37,187 INFO L87 Difference]: Start difference. First operand 2288 states and 2818 transitions. Second operand 5 states. [2020-09-25 06:42:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:39,098 INFO L93 Difference]: Finished difference Result 5908 states and 7471 transitions. [2020-09-25 06:42:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:39,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-09-25 06:42:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:39,118 INFO L225 Difference]: With dead ends: 5908 [2020-09-25 06:42:39,118 INFO L226 Difference]: Without dead ends: 3644 [2020-09-25 06:42:39,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:42:39,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-09-25 06:42:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3440. [2020-09-25 06:42:39,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3440 states. [2020-09-25 06:42:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 4241 transitions. [2020-09-25 06:42:39,253 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 4241 transitions. Word has length 200 [2020-09-25 06:42:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:39,254 INFO L479 AbstractCegarLoop]: Abstraction has 3440 states and 4241 transitions. [2020-09-25 06:42:39,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 4241 transitions. [2020-09-25 06:42:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 06:42:39,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:39,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:39,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:42:39,269 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:39,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:39,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1184211931, now seen corresponding path program 1 times [2020-09-25 06:42:39,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:39,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717180078] [2020-09-25 06:42:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:39,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:39,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking...