/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem02_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:27,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:27,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:27,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:27,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:27,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:27,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:27,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:27,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:27,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:27,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:27,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:27,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:27,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:27,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:27,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:27,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:27,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:27,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:27,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:27,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:27,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:27,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:27,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:27,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:27,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:27,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:27,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:27,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:27,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:27,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:27,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:27,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:27,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:27,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:27,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:27,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:27,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:27,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:27,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:27,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:27,679 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 13:32:27,716 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:27,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:27,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:27,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:27,718 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:27,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:27,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:27,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:27,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:27,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:27,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:27,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:27,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:27,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:27,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:27,720 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:27,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:27,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:27,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:27,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:27,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:27,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:27,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:27,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:27,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:27,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:27,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:27,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:27,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:27,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:32:28,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:28,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:28,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:28,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:28,256 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:28,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 13:32:28,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f75359a68/445430f2e17d41bcb34b1ee72a4b92d9/FLAG67e16e3e1 [2020-09-25 13:32:28,986 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:28,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 13:32:29,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f75359a68/445430f2e17d41bcb34b1ee72a4b92d9/FLAG67e16e3e1 [2020-09-25 13:32:29,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f75359a68/445430f2e17d41bcb34b1ee72a4b92d9 [2020-09-25 13:32:29,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:29,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:29,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:29,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:29,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:29,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:29" (1/1) ... [2020-09-25 13:32:29,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de25899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:29, skipping insertion in model container [2020-09-25 13:32:29,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:29" (1/1) ... [2020-09-25 13:32:29,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:29,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:29,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:29,812 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:30,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:30,111 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:30,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:30 WrapperNode [2020-09-25 13:32:30,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:30,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:30,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:30,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:30,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:30" (1/1) ... [2020-09-25 13:32:30,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:30" (1/1) ... [2020-09-25 13:32:30,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:30" (1/1) ... [2020-09-25 13:32:30,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:30" (1/1) ... [2020-09-25 13:32:30,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:30" (1/1) ... [2020-09-25 13:32:30,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:30" (1/1) ... [2020-09-25 13:32:30,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:30" (1/1) ... [2020-09-25 13:32:30,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:30,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:30,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:30,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:30,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:30" (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 13:32:30,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:30,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:30,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:30,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:30,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:30,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:30,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:30,316 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:30,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:30,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:31,744 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:31,745 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:31,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:31 BoogieIcfgContainer [2020-09-25 13:32:31,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:31,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:31,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:31,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:31,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:29" (1/3) ... [2020-09-25 13:32:31,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57829fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:31, skipping insertion in model container [2020-09-25 13:32:31,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:30" (2/3) ... [2020-09-25 13:32:31,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57829fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:31, skipping insertion in model container [2020-09-25 13:32:31,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:31" (3/3) ... [2020-09-25 13:32:31,765 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-09-25 13:32:31,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:31,788 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:31,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:31,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:31,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:31,847 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:31,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:31,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:31,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:31,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:31,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:31,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 13:32:31,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:31,902 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] [2020-09-25 13:32:31,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:31,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:31,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1858793511, now seen corresponding path program 1 times [2020-09-25 13:32:31,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:31,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595079322] [2020-09-25 13:32:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:32,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:37,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 13:32:37,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:32:37,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-09-25 13:32:37,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:37,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:32:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 13:32:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:32:37,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:37,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:37,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:32:37,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:37,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:32:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:37,546 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 13:32:37,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595079322] [2020-09-25 13:32:37,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:37,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:32:37,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990179616] [2020-09-25 13:32:37,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:32:37,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:37,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:32:37,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:32:37,579 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:32:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:39,855 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 13:32:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:32:39,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 13:32:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:39,884 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 13:32:39,885 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 13:32:39,896 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 13:32:39,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 13:32:40,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 13:32:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 13:32:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 13:32:40,019 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 116 [2020-09-25 13:32:40,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:40,020 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 13:32:40,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:32:40,021 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 13:32:40,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 13:32:40,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:40,031 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:32:40,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:40,031 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:40,032 INFO L82 PathProgramCache]: Analyzing trace with hash 525477933, now seen corresponding path program 1 times [2020-09-25 13:32:40,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:40,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133559086] [2020-09-25 13:32:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:40,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:40,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:44,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:45,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 13:32:45,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:32:45,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 13:32:45,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:45,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:32:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 13:32:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:45,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:45,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:45,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:32:45,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:45,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:45,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:45,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:32:45,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:45,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:32:45,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:45,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:45,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:32:45,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:45,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133559086] [2020-09-25 13:32:45,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:45,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:45,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460847081] [2020-09-25 13:32:45,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:45,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:45,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:45,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:45,324 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 13:32:47,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:47,644 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 13:32:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:47,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 13:32:47,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:47,653 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 13:32:47,653 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 13:32:47,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 13:32:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 13:32:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 13:32:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 13:32:47,726 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 134 [2020-09-25 13:32:47,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:47,727 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 13:32:47,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:47,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 13:32:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 13:32:47,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:47,740 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:32:47,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:47,740 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:47,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:47,741 INFO L82 PathProgramCache]: Analyzing trace with hash 817356248, now seen corresponding path program 1 times [2020-09-25 13:32:47,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:47,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300105613] [2020-09-25 13:32:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:48,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:52,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:52,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:52,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 13:32:52,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:32:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:32:52,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:52,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 13:32:52,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 13:32:52,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:52,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:52,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:52,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:52,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:52,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:32:52,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:52,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:52,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:52,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:52,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:32:52,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:32:52,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:52,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:32:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:53,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300105613] [2020-09-25 13:32:53,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:53,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:53,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702950068] [2020-09-25 13:32:53,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:53,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:53,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:53,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:53,016 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 5 states. [2020-09-25 13:32:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:55,069 INFO L93 Difference]: Finished difference Result 2417 states and 3009 transitions. [2020-09-25 13:32:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:55,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 13:32:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:55,083 INFO L225 Difference]: With dead ends: 2417 [2020-09-25 13:32:55,083 INFO L226 Difference]: Without dead ends: 1400 [2020-09-25 13:32:55,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:55,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2020-09-25 13:32:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1347. [2020-09-25 13:32:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2020-09-25 13:32:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1594 transitions. [2020-09-25 13:32:55,144 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1594 transitions. Word has length 140 [2020-09-25 13:32:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:55,146 INFO L479 AbstractCegarLoop]: Abstraction has 1347 states and 1594 transitions. [2020-09-25 13:32:55,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:55,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1594 transitions. [2020-09-25 13:32:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 13:32:55,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:55,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:55,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:32:55,161 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:55,162 INFO L82 PathProgramCache]: Analyzing trace with hash 85890291, now seen corresponding path program 1 times [2020-09-25 13:32:55,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:55,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490786505] [2020-09-25 13:32:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:00,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:00,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 13:33:00,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:33:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:33:00,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:00,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:33:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:33:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:33:00,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:00,759 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-09-25 13:33:00,918 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2020-09-25 13:33:01,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:01,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:01,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:01,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:33:01,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:01,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:01,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:01,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:01,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:01,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:01,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:01,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:33:01,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:01,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:01,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:01,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:01,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:01,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:01,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:01,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 13:33:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:01,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:01,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:33:01,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:33:01,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:01,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:33:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:33:01,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 13:33:01,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490786505] [2020-09-25 13:33:01,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:01,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:33:01,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681257006] [2020-09-25 13:33:01,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:33:01,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:01,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:33:01,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:33:01,566 INFO L87 Difference]: Start difference. First operand 1347 states and 1594 transitions. Second operand 13 states. [2020-09-25 13:33:02,034 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 13:33:03,675 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 13:33:05,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:05,888 INFO L93 Difference]: Finished difference Result 3802 states and 4725 transitions. [2020-09-25 13:33:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 13:33:05,891 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 157 [2020-09-25 13:33:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:05,904 INFO L225 Difference]: With dead ends: 3802 [2020-09-25 13:33:05,904 INFO L226 Difference]: Without dead ends: 2213 [2020-09-25 13:33:05,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-09-25 13:33:05,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2020-09-25 13:33:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2203. [2020-09-25 13:33:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2203 states. [2020-09-25 13:33:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2527 transitions. [2020-09-25 13:33:05,977 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2527 transitions. Word has length 157 [2020-09-25 13:33:05,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:05,978 INFO L479 AbstractCegarLoop]: Abstraction has 2203 states and 2527 transitions. [2020-09-25 13:33:05,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:33:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2527 transitions. [2020-09-25 13:33:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 13:33:05,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:05,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:05,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:05,986 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:05,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:05,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1083622314, now seen corresponding path program 1 times [2020-09-25 13:33:05,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:05,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630064750] [2020-09-25 13:33:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:06,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:06,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:11,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 13:33:11,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:11,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:33:11,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:11,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 13:33:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 13:33:11,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:11,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:11,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:11,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:11,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:11,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:11,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:11,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:33:11,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:11,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 13:33:11,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:11,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:33:11,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:11,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630064750] [2020-09-25 13:33:11,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:11,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:11,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217988334] [2020-09-25 13:33:11,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:11,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:11,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:11,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:11,264 INFO L87 Difference]: Start difference. First operand 2203 states and 2527 transitions. Second operand 5 states. [2020-09-25 13:33:13,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:13,115 INFO L93 Difference]: Finished difference Result 5003 states and 5896 transitions. [2020-09-25 13:33:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:13,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-09-25 13:33:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:13,129 INFO L225 Difference]: With dead ends: 5003 [2020-09-25 13:33:13,130 INFO L226 Difference]: Without dead ends: 2822 [2020-09-25 13:33:13,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2020-09-25 13:33:13,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2812. [2020-09-25 13:33:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2020-09-25 13:33:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 3228 transitions. [2020-09-25 13:33:13,214 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 3228 transitions. Word has length 158 [2020-09-25 13:33:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:13,215 INFO L479 AbstractCegarLoop]: Abstraction has 2812 states and 3228 transitions. [2020-09-25 13:33:13,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 3228 transitions. [2020-09-25 13:33:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 13:33:13,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:13,224 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:13,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:33:13,224 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:13,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:13,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1383815381, now seen corresponding path program 1 times [2020-09-25 13:33:13,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:13,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804259861] [2020-09-25 13:33:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:16,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking...