/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:05,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:05,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:05,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:05,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:05,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:05,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:05,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:05,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:05,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:05,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:05,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:05,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:05,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:05,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:05,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:05,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:05,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:05,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:05,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:05,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:05,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:05,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:05,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:05,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:05,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:05,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:05,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:05,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:05,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:05,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:05,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:05,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:05,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:05,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:05,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:05,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:05,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:05,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:05,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:05,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:05,421 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 09:01:05,462 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:05,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:05,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:05,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:05,464 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:05,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:05,465 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:05,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:05,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:05,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:05,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:05,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:05,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:05,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:05,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:05,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:05,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:05,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:05,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:05,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:05,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:05,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:05,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:05,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:05,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:05,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:05,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:05,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:05,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:05,470 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 09:01:05,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:05,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:05,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:05,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:05,963 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:05,965 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 09:01:06,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510cc88b4/01a5732c1a904d4484274d5ba6cd4e39/FLAG70690f0e8 [2020-09-25 09:01:06,675 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:06,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 09:01:06,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510cc88b4/01a5732c1a904d4484274d5ba6cd4e39/FLAG70690f0e8 [2020-09-25 09:01:06,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/510cc88b4/01a5732c1a904d4484274d5ba6cd4e39 [2020-09-25 09:01:06,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:06,944 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:06,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:06,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:06,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:06,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:06" (1/1) ... [2020-09-25 09:01:06,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:06, skipping insertion in model container [2020-09-25 09:01:06,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:06" (1/1) ... [2020-09-25 09:01:06,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:07,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:07,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:07,527 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:07,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:07,776 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:07,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07 WrapperNode [2020-09-25 09:01:07,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:07,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:07,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:07,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:07,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (1/1) ... [2020-09-25 09:01:07,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:07,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:07,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:07,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:07,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (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 09:01:07,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:09,379 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:09,379 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:09,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:09 BoogieIcfgContainer [2020-09-25 09:01:09,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:09,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:09,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:09,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:09,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:06" (1/3) ... [2020-09-25 09:01:09,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:09, skipping insertion in model container [2020-09-25 09:01:09,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:07" (2/3) ... [2020-09-25 09:01:09,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:09, skipping insertion in model container [2020-09-25 09:01:09,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:09" (3/3) ... [2020-09-25 09:01:09,402 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-25 09:01:09,417 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:09,437 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:09,463 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:09,509 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:09,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:09,510 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:09,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:09,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:09,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:09,511 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:09,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:01:09,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 09:01:09,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:09,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:09,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:09,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:09,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1414748743, now seen corresponding path program 1 times [2020-09-25 09:01:09,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:09,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316023275] [2020-09-25 09:01:09,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:10,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:10,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:14,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 09:01:14,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:01:14,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:01:14,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:14,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:14,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:14,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 09:01:14,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 09:01:14,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 09:01:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:15,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:15,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:15,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:15,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:15,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 09:01:15,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:15,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:01:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:15,310 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 09:01:15,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316023275] [2020-09-25 09:01:15,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:15,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:01:15,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173603108] [2020-09-25 09:01:15,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:15,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:15,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:15,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:15,345 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 09:01:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:18,027 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 09:01:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:01:18,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 09:01:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:18,065 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 09:01:18,066 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 09:01:18,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 09:01:18,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 09:01:18,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 09:01:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:01:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 09:01:18,207 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 142 [2020-09-25 09:01:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:18,208 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 09:01:18,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 09:01:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 09:01:18,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:18,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:18,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:01:18,215 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:18,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:18,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1681317672, now seen corresponding path program 1 times [2020-09-25 09:01:18,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:18,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392265004] [2020-09-25 09:01:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:18,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:18,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:23,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 09:01:23,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:01:23,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-09-25 09:01:23,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:23,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:23,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:23,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 09:01:23,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:01:23,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:23,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:23,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:23,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:01:23,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:23,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:23,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:23,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:23,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:01:23,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:23,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:23,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:23,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:23,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 09:01:23,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:23,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:23,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392265004] [2020-09-25 09:01:23,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:23,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:01:23,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349982308] [2020-09-25 09:01:23,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:23,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:23,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:23,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:23,570 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 7 states. [2020-09-25 09:01:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:25,356 INFO L93 Difference]: Finished difference Result 1400 states and 1721 transitions. [2020-09-25 09:01:25,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:25,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 09:01:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:25,364 INFO L225 Difference]: With dead ends: 1400 [2020-09-25 09:01:25,367 INFO L226 Difference]: Without dead ends: 821 [2020-09-25 09:01:25,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:01:25,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-09-25 09:01:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 759. [2020-09-25 09:01:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-09-25 09:01:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 924 transitions. [2020-09-25 09:01:25,417 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 924 transitions. Word has length 163 [2020-09-25 09:01:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:25,418 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 924 transitions. [2020-09-25 09:01:25,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 924 transitions. [2020-09-25 09:01:25,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 09:01:25,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:25,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:25,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:25,423 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:25,423 INFO L82 PathProgramCache]: Analyzing trace with hash -769516074, now seen corresponding path program 1 times [2020-09-25 09:01:25,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:25,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103319074] [2020-09-25 09:01:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:30,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 09:01:30,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:01:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 09:01:30,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:30,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:01:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 09:01:30,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:30,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:30,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:30,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:30,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:30,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:01:30,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:30,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:30,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:30,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:30,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:30,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:30,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 09:01:30,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:30,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:01:30,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103319074] [2020-09-25 09:01:30,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:30,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:01:30,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885729006] [2020-09-25 09:01:30,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:01:30,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:30,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:01:30,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:30,798 INFO L87 Difference]: Start difference. First operand 759 states and 924 transitions. Second operand 6 states. [2020-09-25 09:01:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:32,838 INFO L93 Difference]: Finished difference Result 1994 states and 2535 transitions. [2020-09-25 09:01:32,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:01:32,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-25 09:01:32,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:32,847 INFO L225 Difference]: With dead ends: 1994 [2020-09-25 09:01:32,848 INFO L226 Difference]: Without dead ends: 1259 [2020-09-25 09:01:32,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:32,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2020-09-25 09:01:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1198. [2020-09-25 09:01:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2020-09-25 09:01:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1495 transitions. [2020-09-25 09:01:32,897 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1495 transitions. Word has length 163 [2020-09-25 09:01:32,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:32,898 INFO L479 AbstractCegarLoop]: Abstraction has 1198 states and 1495 transitions. [2020-09-25 09:01:32,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:01:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1495 transitions. [2020-09-25 09:01:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 09:01:32,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:32,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:32,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:32,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:32,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2135172696, now seen corresponding path program 1 times [2020-09-25 09:01:32,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:32,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121810393] [2020-09-25 09:01:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:32,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:37,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 09:01:37,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:01:37,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:37,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:01:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 09:01:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 09:01:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:38,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:38,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:38,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:38,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:01:38,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:38,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:38,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:01:38,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:38,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 09:01:38,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:38,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:01:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:01:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:38,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121810393] [2020-09-25 09:01:38,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:38,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:01:38,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936238148] [2020-09-25 09:01:38,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:01:38,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:38,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:01:38,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:01:38,639 INFO L87 Difference]: Start difference. First operand 1198 states and 1495 transitions. Second operand 10 states. [2020-09-25 09:01:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:42,516 INFO L93 Difference]: Finished difference Result 3351 states and 4398 transitions. [2020-09-25 09:01:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:01:42,517 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-25 09:01:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:42,532 INFO L225 Difference]: With dead ends: 3351 [2020-09-25 09:01:42,532 INFO L226 Difference]: Without dead ends: 1941 [2020-09-25 09:01:42,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:01:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2020-09-25 09:01:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1496. [2020-09-25 09:01:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-09-25 09:01:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1834 transitions. [2020-09-25 09:01:42,615 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1834 transitions. Word has length 179 [2020-09-25 09:01:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:42,616 INFO L479 AbstractCegarLoop]: Abstraction has 1496 states and 1834 transitions. [2020-09-25 09:01:42,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:01:42,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1834 transitions. [2020-09-25 09:01:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 09:01:42,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:42,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:42,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:42,624 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:42,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:42,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1982265959, now seen corresponding path program 1 times [2020-09-25 09:01:42,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:42,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305181829] [2020-09-25 09:01:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:42,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 09:01:47,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:01:47,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:01:47,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 09:01:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 09:01:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:47,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:47,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:01:47,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:47,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:01:47,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 09:01:47,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:47,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 09:01:47,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:01:47,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:47,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305181829] [2020-09-25 09:01:47,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:47,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:47,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087258054] [2020-09-25 09:01:47,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:47,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:47,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:47,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:47,970 INFO L87 Difference]: Start difference. First operand 1496 states and 1834 transitions. Second operand 5 states. [2020-09-25 09:01:50,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:50,345 INFO L93 Difference]: Finished difference Result 4251 states and 5401 transitions. [2020-09-25 09:01:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:01:50,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 09:01:50,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:50,369 INFO L225 Difference]: With dead ends: 4251 [2020-09-25 09:01:50,370 INFO L226 Difference]: Without dead ends: 2779 [2020-09-25 09:01:50,378 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 09:01:50,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2020-09-25 09:01:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2658. [2020-09-25 09:01:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2020-09-25 09:01:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3300 transitions. [2020-09-25 09:01:50,503 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3300 transitions. Word has length 185 [2020-09-25 09:01:50,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:50,504 INFO L479 AbstractCegarLoop]: Abstraction has 2658 states and 3300 transitions. [2020-09-25 09:01:50,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:50,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3300 transitions. [2020-09-25 09:01:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 09:01:50,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:50,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:50,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:50,519 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:50,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1218049893, now seen corresponding path program 1 times [2020-09-25 09:01:50,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:50,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964189195] [2020-09-25 09:01:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking...