/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/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:48,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:48,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:48,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:48,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:48,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:48,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:48,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:48,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:48,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:48,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:48,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:48,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:48,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:48,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:48,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:48,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:48,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:48,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:48,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:48,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:48,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:48,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:48,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:48,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:48,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:48,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:48,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:48,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:48,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:48,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:48,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:48,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:48,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:48,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:48,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:48,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:48,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:48,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:48,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:48,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:48,273 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 09:06:48,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:48,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:48,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:48,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:48,305 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:48,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:48,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:48,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:48,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:48,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:48,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:48,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:48,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:48,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:48,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:48,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:48,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:48,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:48,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:48,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:48,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:48,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:48,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:48,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:48,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:48,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:48,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:48,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:48,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:48,310 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 09:06:48,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:48,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:48,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:48,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:48,807 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:48,808 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 09:06:48,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e243c1d62/25513cee7fd547d3b9be3ea534118150/FLAGc31086903 [2020-09-25 09:06:49,601 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:49,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 09:06:49,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e243c1d62/25513cee7fd547d3b9be3ea534118150/FLAGc31086903 [2020-09-25 09:06:49,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e243c1d62/25513cee7fd547d3b9be3ea534118150 [2020-09-25 09:06:49,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:49,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:49,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:49,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:49,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:49,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:49" (1/1) ... [2020-09-25 09:06:49,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef001ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:49, skipping insertion in model container [2020-09-25 09:06:49,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:49" (1/1) ... [2020-09-25 09:06:49,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:49,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:50,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:50,593 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:50,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:50,787 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:50,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50 WrapperNode [2020-09-25 09:06:50,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:50,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:50,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:50,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:50,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50" (1/1) ... [2020-09-25 09:06:50,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50" (1/1) ... [2020-09-25 09:06:50,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50" (1/1) ... [2020-09-25 09:06:50,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50" (1/1) ... [2020-09-25 09:06:50,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50" (1/1) ... [2020-09-25 09:06:50,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50" (1/1) ... [2020-09-25 09:06:50,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50" (1/1) ... [2020-09-25 09:06:50,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:50,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:50,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:50,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:50,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50" (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 09:06:51,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:51,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:51,044 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:51,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:52,972 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:52,972 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:52,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:52 BoogieIcfgContainer [2020-09-25 09:06:52,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:52,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:52,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:52,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:52,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:49" (1/3) ... [2020-09-25 09:06:52,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aaaf9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:52, skipping insertion in model container [2020-09-25 09:06:52,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50" (2/3) ... [2020-09-25 09:06:52,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aaaf9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:52, skipping insertion in model container [2020-09-25 09:06:52,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:52" (3/3) ... [2020-09-25 09:06:52,994 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-25 09:06:53,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:53,019 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:53,042 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:53,079 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:53,079 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:53,079 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:53,079 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:53,079 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:53,080 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:53,080 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:53,080 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 09:06:53,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 09:06:53,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:53,129 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] [2020-09-25 09:06:53,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:53,137 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-25 09:06:53,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:53,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426769839] [2020-09-25 09:06:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:53,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:53,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 09:06:53,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:53,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-09-25 09:06:53,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:53,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:53,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 09:06:53,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:06:54,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:54,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:54,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:54,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:54,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:06:54,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:54,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:54,138 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 09:06:54,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426769839] [2020-09-25 09:06:54,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:54,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:06:54,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922443578] [2020-09-25 09:06:54,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:06:54,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:54,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:06:54,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:54,173 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 09:06:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:58,338 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 09:06:58,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:06:58,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 09:06:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:58,373 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 09:06:58,373 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 09:06:58,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 09:06:58,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 09:06:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 09:06:58,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 09:06:58,514 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 73 [2020-09-25 09:06:58,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:58,515 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 09:06:58,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:06:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 09:06:58,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 09:06:58,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:58,526 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:58,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:58,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:58,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:58,528 INFO L82 PathProgramCache]: Analyzing trace with hash -893839862, now seen corresponding path program 1 times [2020-09-25 09:06:58,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:58,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621486912] [2020-09-25 09:06:58,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:01,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:02,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 09:07:02,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:07:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3566 [2020-09-25 09:07:02,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:02,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:07:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 09:07:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:02,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:02,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:02,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:02,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:02,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:07:02,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:02,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:07:02,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:07:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:02,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 09:07:02,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 09:07:02,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:02,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 09:07:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:07:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:07:02,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621486912] [2020-09-25 09:07:02,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:02,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:07:02,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696870481] [2020-09-25 09:07:02,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:07:02,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:02,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:07:02,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:07:02,830 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 6 states. [2020-09-25 09:07:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:05,554 INFO L93 Difference]: Finished difference Result 2614 states and 3386 transitions. [2020-09-25 09:07:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:07:05,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-25 09:07:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:05,575 INFO L225 Difference]: With dead ends: 2614 [2020-09-25 09:07:05,576 INFO L226 Difference]: Without dead ends: 1632 [2020-09-25 09:07:05,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:05,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2020-09-25 09:07:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1580. [2020-09-25 09:07:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-09-25 09:07:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 1959 transitions. [2020-09-25 09:07:05,668 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 1959 transitions. Word has length 160 [2020-09-25 09:07:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:05,671 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 1959 transitions. [2020-09-25 09:07:05,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:07:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 1959 transitions. [2020-09-25 09:07:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 09:07:05,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:05,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:05,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:07:05,679 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:05,680 INFO L82 PathProgramCache]: Analyzing trace with hash 760434101, now seen corresponding path program 1 times [2020-09-25 09:07:05,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:05,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574370610] [2020-09-25 09:07:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:05,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:06,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:10,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 09:07:10,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:07:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:07:10,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:10,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 09:07:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 09:07:10,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:10,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:10,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:10,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:10,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:10,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:07:10,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:10,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:10,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:10,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:07:10,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:10,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 09:07:10,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:10,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 09:07:10,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:10,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 09:07:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:10,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:11,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:11,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 09:07:11,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:11,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 09:07:11,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:11,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 09:07:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:11,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574370610] [2020-09-25 09:07:11,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:11,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:07:11,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661538430] [2020-09-25 09:07:11,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:07:11,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:11,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:07:11,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:11,175 INFO L87 Difference]: Start difference. First operand 1580 states and 1959 transitions. Second operand 7 states. [2020-09-25 09:07:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:14,083 INFO L93 Difference]: Finished difference Result 3800 states and 4857 transitions. [2020-09-25 09:07:14,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:07:14,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-09-25 09:07:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:14,104 INFO L225 Difference]: With dead ends: 3800 [2020-09-25 09:07:14,104 INFO L226 Difference]: Without dead ends: 2040 [2020-09-25 09:07:14,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:07:14,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2020-09-25 09:07:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1980. [2020-09-25 09:07:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1980 states. [2020-09-25 09:07:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2386 transitions. [2020-09-25 09:07:14,185 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2386 transitions. Word has length 242 [2020-09-25 09:07:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:14,186 INFO L479 AbstractCegarLoop]: Abstraction has 1980 states and 2386 transitions. [2020-09-25 09:07:14,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2386 transitions. [2020-09-25 09:07:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 09:07:14,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:14,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:14,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:07:14,195 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:14,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:14,196 INFO L82 PathProgramCache]: Analyzing trace with hash -303069568, now seen corresponding path program 1 times [2020-09-25 09:07:14,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:14,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300440744] [2020-09-25 09:07:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:14,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:19,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 09:07:19,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:07:19,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 09:07:19,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:19,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:07:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:07:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-25 09:07:19,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:19,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:19,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:19,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:19,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:07:19,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:19,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:07:19,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:19,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:19,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:07:19,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:19,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 09:07:19,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:19,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:07:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:07:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:07:19,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 09:07:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:19,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:07:19,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:19,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 09:07:19,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:19,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:07:19,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:20,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300440744] [2020-09-25 09:07:20,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:20,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:07:20,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111633353] [2020-09-25 09:07:20,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:07:20,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:20,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:07:20,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:07:20,291 INFO L87 Difference]: Start difference. First operand 1980 states and 2386 transitions. Second operand 10 states. [2020-09-25 09:07:24,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:24,458 INFO L93 Difference]: Finished difference Result 4206 states and 5055 transitions. [2020-09-25 09:07:24,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:07:24,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 249 [2020-09-25 09:07:24,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:24,473 INFO L225 Difference]: With dead ends: 4206 [2020-09-25 09:07:24,473 INFO L226 Difference]: Without dead ends: 1803 [2020-09-25 09:07:24,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:07:24,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2020-09-25 09:07:24,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1745. [2020-09-25 09:07:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1745 states. [2020-09-25 09:07:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 1899 transitions. [2020-09-25 09:07:24,526 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 1899 transitions. Word has length 249 [2020-09-25 09:07:24,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:24,527 INFO L479 AbstractCegarLoop]: Abstraction has 1745 states and 1899 transitions. [2020-09-25 09:07:24,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:07:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 1899 transitions. [2020-09-25 09:07:24,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-25 09:07:24,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:24,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:24,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:07:24,535 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:24,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:24,535 INFO L82 PathProgramCache]: Analyzing trace with hash -505865555, now seen corresponding path program 1 times [2020-09-25 09:07:24,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:24,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970069917] [2020-09-25 09:07:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:24,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:27,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:29,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-09-25 09:07:29,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:07:29,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 09:07:29,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:29,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:07:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-09-25 09:07:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:29,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:29,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:29,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:29,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:07:29,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:29,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:07:29,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:29,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:30,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:30,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 09:07:30,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:30,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 09:07:30,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:30,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 09:07:30,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:30,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 09:07:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:30,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:30,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 09:07:30,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:30,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-25 09:07:30,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:30,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:30,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 09:07:30,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-25 09:07:31,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970069917] [2020-09-25 09:07:31,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:31,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:07:31,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870018977] [2020-09-25 09:07:31,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:07:31,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:31,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:07:31,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:31,081 INFO L87 Difference]: Start difference. First operand 1745 states and 1899 transitions. Second operand 7 states. [2020-09-25 09:07:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:33,200 INFO L93 Difference]: Finished difference Result 4070 states and 4415 transitions. [2020-09-25 09:07:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:07:33,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-09-25 09:07:33,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:33,214 INFO L225 Difference]: With dead ends: 4070 [2020-09-25 09:07:33,214 INFO L226 Difference]: Without dead ends: 2340 [2020-09-25 09:07:33,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:07:33,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2020-09-25 09:07:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 2129. [2020-09-25 09:07:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2129 states. [2020-09-25 09:07:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2290 transitions. [2020-09-25 09:07:33,284 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2290 transitions. Word has length 380 [2020-09-25 09:07:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:33,285 INFO L479 AbstractCegarLoop]: Abstraction has 2129 states and 2290 transitions. [2020-09-25 09:07:33,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2290 transitions. [2020-09-25 09:07:33,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-09-25 09:07:33,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:33,297 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:33,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:07:33,298 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:33,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:33,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1540699335, now seen corresponding path program 1 times [2020-09-25 09:07:33,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:33,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964167167] [2020-09-25 09:07:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:33,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking...