/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=1.0 --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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:46,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:46,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:46,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:46,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:46,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:46,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:46,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:46,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:46,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:46,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:46,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:46,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:46,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:46,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:46,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:46,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:46,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:46,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:46,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:46,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:46,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:46,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:46,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:46,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:46,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:46,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:46,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:46,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:46,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:46,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:46,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:46,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:46,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:46,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:46,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:46,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:46,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:46,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:46,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:46,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:46,157 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 09:00:46,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:46,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:46,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:46,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:46,185 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:46,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:46,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:46,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:46,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:46,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:46,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:46,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:46,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:46,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:46,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:46,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:46,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:46,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:46,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:46,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:46,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:46,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:46,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:46,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:46,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:46,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:46,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:46,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:46,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:46,191 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:00:46,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:00:46,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:00:46,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:00:46,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:00:46,692 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:00:46,693 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 09:00:46,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1738045e/f2aa723092d24c20b549c00296b997df/FLAGc9c61b0d0 [2020-09-25 09:00:47,411 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:00:47,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 09:00:47,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1738045e/f2aa723092d24c20b549c00296b997df/FLAGc9c61b0d0 [2020-09-25 09:00:47,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1738045e/f2aa723092d24c20b549c00296b997df [2020-09-25 09:00:47,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:00:47,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:00:47,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:47,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:00:47,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:00:47,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:47" (1/1) ... [2020-09-25 09:00:47,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b79fd23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:47, skipping insertion in model container [2020-09-25 09:00:47,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:47" (1/1) ... [2020-09-25 09:00:47,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:00:47,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:00:48,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:48,274 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:00:48,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:48,523 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:00:48,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48 WrapperNode [2020-09-25 09:00:48,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:48,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:00:48,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:00:48,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:00:48,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48" (1/1) ... [2020-09-25 09:00:48,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48" (1/1) ... [2020-09-25 09:00:48,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48" (1/1) ... [2020-09-25 09:00:48,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48" (1/1) ... [2020-09-25 09:00:48,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48" (1/1) ... [2020-09-25 09:00:48,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48" (1/1) ... [2020-09-25 09:00:48,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48" (1/1) ... [2020-09-25 09:00:48,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:00:48,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:00:48,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:00:48,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:00:48,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48" (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 09:00:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:00:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:00:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:00:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:00:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:00:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:00:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:00:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:00:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:00:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:00:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:00:50,071 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:00:50,072 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:00:50,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:50 BoogieIcfgContainer [2020-09-25 09:00:50,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:00:50,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:00:50,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:00:50,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:00:50,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:00:47" (1/3) ... [2020-09-25 09:00:50,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c054be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:50, skipping insertion in model container [2020-09-25 09:00:50,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48" (2/3) ... [2020-09-25 09:00:50,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c054be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:50, skipping insertion in model container [2020-09-25 09:00:50,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:50" (3/3) ... [2020-09-25 09:00:50,102 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-09-25 09:00:50,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:00:50,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:00:50,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:00:50,193 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:00:50,193 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:00:50,193 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:00:50,194 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:00:50,194 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:00:50,194 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:00:50,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:00:50,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:00:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:00:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 09:00:50,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:50,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:50,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash -2068005297, now seen corresponding path program 1 times [2020-09-25 09:00:50,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:50,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520454304] [2020-09-25 09:00:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:50,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:55,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:55,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:55,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:55,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 09:00:55,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:00:55,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-09-25 09:00:55,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:55,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:55,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:55,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:00:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 09:00:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:56,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:56,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:56,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:00:56,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:56,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:56,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:00:56,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:56,102 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 09:00:56,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520454304] [2020-09-25 09:00:56,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:56,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:56,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394447586] [2020-09-25 09:00:56,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:56,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:56,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:56,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:56,139 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:58,353 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 09:00:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:58,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 09:00:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:58,381 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 09:00:58,381 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 09:00:58,392 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 09:00:58,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 09:00:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 09:00:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:00:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:00:58,509 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 160 [2020-09-25 09:00:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:58,511 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:00:58,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:00:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 09:00:58,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:58,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:58,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:58,525 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:58,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:58,526 INFO L82 PathProgramCache]: Analyzing trace with hash 305686135, now seen corresponding path program 1 times [2020-09-25 09:00:58,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:58,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857115623] [2020-09-25 09:00:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:03,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:03,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 09:01:03,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:01:03,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:01:03,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:03,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:03,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:01:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 09:01:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:01:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:03,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:03,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:03,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:01:03,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:03,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:03,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:03,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:03,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:03,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:03,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:03,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 09:01:03,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:03,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:03,978 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 09:01:03,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857115623] [2020-09-25 09:01:03,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:03,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:01:03,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748979421] [2020-09-25 09:01:03,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:03,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:03,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:03,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:03,985 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 09:01:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:06,580 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 09:01:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:01:06,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 09:01:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:06,599 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 09:01:06,599 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 09:01:06,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:01:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 09:01:06,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 09:01:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 09:01:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1109 transitions. [2020-09-25 09:01:06,670 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1109 transitions. Word has length 181 [2020-09-25 09:01:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:06,671 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1109 transitions. [2020-09-25 09:01:06,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1109 transitions. [2020-09-25 09:01:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 09:01:06,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:06,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:06,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:06,677 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:06,678 INFO L82 PathProgramCache]: Analyzing trace with hash -166930083, now seen corresponding path program 1 times [2020-09-25 09:01:06,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:06,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001575878] [2020-09-25 09:01:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:07,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:08,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:11,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 09:01:11,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:11,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:01:11,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:11,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:11,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:01:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:01:11,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:11,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:11,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:11,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 09:01:11,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:11,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:01:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:11,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:11,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:01:11,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:12,007 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 09:01:12,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001575878] [2020-09-25 09:01:12,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:12,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:01:12,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022036334] [2020-09-25 09:01:12,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:12,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:12,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:12,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:12,010 INFO L87 Difference]: Start difference. First operand 901 states and 1109 transitions. Second operand 7 states. [2020-09-25 09:01:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:14,441 INFO L93 Difference]: Finished difference Result 2544 states and 3295 transitions. [2020-09-25 09:01:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:14,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 09:01:14,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:14,458 INFO L225 Difference]: With dead ends: 2544 [2020-09-25 09:01:14,460 INFO L226 Difference]: Without dead ends: 1667 [2020-09-25 09:01:14,471 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 [2020-09-25 09:01:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-09-25 09:01:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1554. [2020-09-25 09:01:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-09-25 09:01:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1941 transitions. [2020-09-25 09:01:14,562 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1941 transitions. Word has length 182 [2020-09-25 09:01:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:14,562 INFO L479 AbstractCegarLoop]: Abstraction has 1554 states and 1941 transitions. [2020-09-25 09:01:14,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1941 transitions. [2020-09-25 09:01:14,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 09:01:14,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:14,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:14,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:14,571 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:14,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:14,572 INFO L82 PathProgramCache]: Analyzing trace with hash 621217626, now seen corresponding path program 1 times [2020-09-25 09:01:14,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:14,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137936516] [2020-09-25 09:01:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:14,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:16,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:19,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 09:01:19,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:19,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-09-25 09:01:19,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:19,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:01:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 09:01:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:19,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:19,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:19,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:19,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:01:19,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:19,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:19,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:19,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:19,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:20,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:01:20,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 09:01:20,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:20,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:01:20,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:01:20,214 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:01:20,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137936516] [2020-09-25 09:01:20,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:20,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:20,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866680970] [2020-09-25 09:01:20,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:20,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:20,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:20,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:20,220 INFO L87 Difference]: Start difference. First operand 1554 states and 1941 transitions. Second operand 7 states. [2020-09-25 09:01:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:22,839 INFO L93 Difference]: Finished difference Result 4674 states and 6087 transitions. [2020-09-25 09:01:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 09:01:22,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-09-25 09:01:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:22,862 INFO L225 Difference]: With dead ends: 4674 [2020-09-25 09:01:22,862 INFO L226 Difference]: Without dead ends: 3144 [2020-09-25 09:01:22,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:01:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-09-25 09:01:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 2555. [2020-09-25 09:01:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2555 states. [2020-09-25 09:01:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2555 states to 2555 states and 3325 transitions. [2020-09-25 09:01:22,971 INFO L78 Accepts]: Start accepts. Automaton has 2555 states and 3325 transitions. Word has length 189 [2020-09-25 09:01:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:22,973 INFO L479 AbstractCegarLoop]: Abstraction has 2555 states and 3325 transitions. [2020-09-25 09:01:22,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2555 states and 3325 transitions. [2020-09-25 09:01:22,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 09:01:22,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:22,986 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, 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, 1, 1] [2020-09-25 09:01:22,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:22,987 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:22,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:22,987 INFO L82 PathProgramCache]: Analyzing trace with hash 529535002, now seen corresponding path program 1 times [2020-09-25 09:01:22,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:22,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999601028] [2020-09-25 09:01:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:28,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 09:01:28,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:01:28,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:28,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:01:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 09:01:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:28,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:28,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:28,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:28,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:01:28,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:28,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:28,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:28,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:28,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:28,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:01:28,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:28,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:01:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:01:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:28,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:28,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 09:01:28,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 09:01:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:28,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:01:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:01:28,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999601028] [2020-09-25 09:01:28,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:28,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:28,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695538020] [2020-09-25 09:01:28,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:28,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:28,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:28,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:28,374 INFO L87 Difference]: Start difference. First operand 2555 states and 3325 transitions. Second operand 7 states. [2020-09-25 09:01:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:30,722 INFO L93 Difference]: Finished difference Result 5409 states and 7216 transitions. [2020-09-25 09:01:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:30,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-25 09:01:30,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:30,741 INFO L225 Difference]: With dead ends: 5409 [2020-09-25 09:01:30,742 INFO L226 Difference]: Without dead ends: 2878 [2020-09-25 09:01:30,754 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 09:01:30,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-09-25 09:01:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2741. [2020-09-25 09:01:30,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2741 states. [2020-09-25 09:01:30,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3520 transitions. [2020-09-25 09:01:30,882 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3520 transitions. Word has length 214 [2020-09-25 09:01:30,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:30,882 INFO L479 AbstractCegarLoop]: Abstraction has 2741 states and 3520 transitions. [2020-09-25 09:01:30,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:30,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3520 transitions. [2020-09-25 09:01:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 09:01:30,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:30,898 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, 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, 1, 1, 1, 1, 1] [2020-09-25 09:01:30,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:30,899 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:30,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:30,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2026701369, now seen corresponding path program 1 times [2020-09-25 09:01:30,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:30,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541533617] [2020-09-25 09:01:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:30,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:35,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 09:01:35,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:01:35,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:01:35,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:35,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:01:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 09:01:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 09:01:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:36,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:36,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:36,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:01:36,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:36,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:36,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:36,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:36,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:36,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:36,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:01:36,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 09:01:36,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:36,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:01:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:01:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:36,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 09:01:36,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 09:01:36,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:36,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:01:36,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:01:36,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541533617] [2020-09-25 09:01:36,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:36,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:01:36,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120662266] [2020-09-25 09:01:36,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:01:36,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:36,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:01:36,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:36,395 INFO L87 Difference]: Start difference. First operand 2741 states and 3520 transitions. Second operand 8 states.