/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=SMALLEST --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:32,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:32,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:32,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:32,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:32,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:32,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:32,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:32,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:32,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:32,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:32,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:32,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:32,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:32,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:32,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:32,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:32,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:32,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:32,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:32,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:32,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:32,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:32,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:32,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:32,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:32,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:32,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:32,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:32,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:32,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:32,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:32,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:32,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:32,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:32,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:32,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:32,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:32,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:32,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:32,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:32,628 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 [2020-09-24 18:19:32,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:32,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:32,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:32,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:32,670 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:32,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:32,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:32,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:32,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:32,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:32,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:32,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:32,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:32,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:32,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:32,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:32,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:32,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:32,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:32,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:32,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:32,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:32,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:32,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:32,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:32,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:32,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:32,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:32,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:32,676 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:19:33,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:33,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:33,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:33,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:33,166 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:33,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-24 18:19:33,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c0dae185/9aedbe5e647c41b8b27006208449b7c7/FLAG31fdf14b4 [2020-09-24 18:19:33,905 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:33,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-24 18:19:33,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c0dae185/9aedbe5e647c41b8b27006208449b7c7/FLAG31fdf14b4 [2020-09-24 18:19:34,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c0dae185/9aedbe5e647c41b8b27006208449b7c7 [2020-09-24 18:19:34,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:34,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:34,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:34,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:34,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:34,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:34" (1/1) ... [2020-09-24 18:19:34,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34, skipping insertion in model container [2020-09-24 18:19:34,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:34" (1/1) ... [2020-09-24 18:19:34,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:34,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:34,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:34,654 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:34,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:34,887 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:34,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34 WrapperNode [2020-09-24 18:19:34,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:34,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:34,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:34,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:34,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34" (1/1) ... [2020-09-24 18:19:34,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34" (1/1) ... [2020-09-24 18:19:34,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34" (1/1) ... [2020-09-24 18:19:34,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34" (1/1) ... [2020-09-24 18:19:34,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34" (1/1) ... [2020-09-24 18:19:35,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34" (1/1) ... [2020-09-24 18:19:35,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34" (1/1) ... [2020-09-24 18:19:35,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:35,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:35,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:35,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:35,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34" (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 [2020-09-24 18:19:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:19:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:19:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:36,352 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:36,352 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:19:36,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:36 BoogieIcfgContainer [2020-09-24 18:19:36,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:36,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:36,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:36,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:36,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:34" (1/3) ... [2020-09-24 18:19:36,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:36, skipping insertion in model container [2020-09-24 18:19:36,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:34" (2/3) ... [2020-09-24 18:19:36,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:36, skipping insertion in model container [2020-09-24 18:19:36,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:36" (3/3) ... [2020-09-24 18:19:36,371 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-09-24 18:19:36,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:36,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:36,419 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:36,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:36,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:36,459 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:36,459 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:36,459 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:36,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:36,460 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:36,460 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:19:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-24 18:19:36,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:36,518 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] [2020-09-24 18:19:36,518 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:36,528 INFO L82 PathProgramCache]: Analyzing trace with hash 149723165, now seen corresponding path program 1 times [2020-09-24 18:19:36,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:36,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-24 18:19:36,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:36,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:38,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:40,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:41,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:41,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 18:19:41,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:19:41,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:19:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 18:19:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:19:42,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:42,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:42,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:42,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:42,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:19:42,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:42,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:42,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:42,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:19:42,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:42,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-24 18:19:42,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:42,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:19:42,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339583971] [2020-09-24 18:19:42,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:19:42,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:42,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:19:42,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:19:42,238 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:19:44,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:44,243 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-24 18:19:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:19:44,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-09-24 18:19:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:44,274 INFO L225 Difference]: With dead ends: 1212 [2020-09-24 18:19:44,275 INFO L226 Difference]: Without dead ends: 638 [2020-09-24 18:19:44,284 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 [2020-09-24 18:19:44,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-24 18:19:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-24 18:19:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 18:19:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 18:19:44,379 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 137 [2020-09-24 18:19:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:44,380 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 18:19:44,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:19:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 18:19:44,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 18:19:44,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:44,391 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] [2020-09-24 18:19:44,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:19:44,392 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:44,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1946630892, now seen corresponding path program 1 times [2020-09-24 18:19:44,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:44,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052359147] [2020-09-24 18:19:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:45,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:49,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 18:19:49,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:19:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-09-24 18:19:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:19:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-24 18:19:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:49,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:49,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:49,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:19:49,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:49,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:49,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:19:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:19:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:49,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052359147] [2020-09-24 18:19:49,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:49,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:19:49,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885933239] [2020-09-24 18:19:49,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:49,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:49,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:49,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:49,854 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-24 18:19:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:51,973 INFO L93 Difference]: Finished difference Result 1360 states and 1670 transitions. [2020-09-24 18:19:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:19:51,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-09-24 18:19:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:51,986 INFO L225 Difference]: With dead ends: 1360 [2020-09-24 18:19:51,986 INFO L226 Difference]: Without dead ends: 781 [2020-09-24 18:19:51,989 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 [2020-09-24 18:19:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-24 18:19:52,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 748. [2020-09-24 18:19:52,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-24 18:19:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 893 transitions. [2020-09-24 18:19:52,054 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 893 transitions. Word has length 158 [2020-09-24 18:19:52,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:52,054 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 893 transitions. [2020-09-24 18:19:52,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:19:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 893 transitions. [2020-09-24 18:19:52,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 18:19:52,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:52,060 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:52,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:19:52,061 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:52,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:52,061 INFO L82 PathProgramCache]: Analyzing trace with hash -464697292, now seen corresponding path program 1 times [2020-09-24 18:19:52,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:52,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460682317] [2020-09-24 18:19:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:53,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:57,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 18:19:57,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 18:19:57,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-09-24 18:19:57,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:57,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:57,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 18:19:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-24 18:19:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:57,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:57,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:57,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:57,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:57,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:19:57,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:57,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:57,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:57,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:19:57,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:57,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:19:57,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:19:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:57,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460682317] [2020-09-24 18:19:57,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:57,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:19:57,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376620433] [2020-09-24 18:19:57,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:57,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:57,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:57,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:57,420 INFO L87 Difference]: Start difference. First operand 748 states and 893 transitions. Second operand 5 states. [2020-09-24 18:19:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:59,377 INFO L93 Difference]: Finished difference Result 2037 states and 2498 transitions. [2020-09-24 18:19:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:19:59,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-24 18:19:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:59,390 INFO L225 Difference]: With dead ends: 2037 [2020-09-24 18:19:59,394 INFO L226 Difference]: Without dead ends: 1313 [2020-09-24 18:19:59,397 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 [2020-09-24 18:19:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-09-24 18:19:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1095. [2020-09-24 18:19:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-09-24 18:19:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1308 transitions. [2020-09-24 18:19:59,447 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1308 transitions. Word has length 167 [2020-09-24 18:19:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:59,449 INFO L479 AbstractCegarLoop]: Abstraction has 1095 states and 1308 transitions. [2020-09-24 18:19:59,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:19:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1308 transitions. [2020-09-24 18:19:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-24 18:19:59,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:59,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:59,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:19:59,464 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:59,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:59,464 INFO L82 PathProgramCache]: Analyzing trace with hash 2046884882, now seen corresponding path program 1 times [2020-09-24 18:19:59,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:59,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696151294] [2020-09-24 18:19:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:03,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:04,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:04,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 18:20:04,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:20:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:20:04,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 18:20:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 18:20:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:20:04,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:04,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:04,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:04,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:04,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:04,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:04,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:04,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:20:04,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 18:20:04,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:20:04,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:04,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696151294] [2020-09-24 18:20:04,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:04,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:04,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676258580] [2020-09-24 18:20:04,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:04,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:04,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:04,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:04,846 INFO L87 Difference]: Start difference. First operand 1095 states and 1308 transitions. Second operand 5 states. [2020-09-24 18:20:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:06,253 INFO L93 Difference]: Finished difference Result 2805 states and 3480 transitions. [2020-09-24 18:20:06,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:06,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-09-24 18:20:06,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:06,265 INFO L225 Difference]: With dead ends: 2805 [2020-09-24 18:20:06,265 INFO L226 Difference]: Without dead ends: 1734 [2020-09-24 18:20:06,270 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 [2020-09-24 18:20:06,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2020-09-24 18:20:06,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1667. [2020-09-24 18:20:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2020-09-24 18:20:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2006 transitions. [2020-09-24 18:20:06,335 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2006 transitions. Word has length 184 [2020-09-24 18:20:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:06,335 INFO L479 AbstractCegarLoop]: Abstraction has 1667 states and 2006 transitions. [2020-09-24 18:20:06,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2006 transitions. [2020-09-24 18:20:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-24 18:20:06,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:06,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:20:06,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:06,348 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:06,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2053520457, now seen corresponding path program 1 times [2020-09-24 18:20:06,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:06,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625279466] [2020-09-24 18:20:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:11,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-24 18:20:11,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:11,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 18:20:11,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:20:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 18:20:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:11,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:11,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:11,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:11,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:11,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:20:11,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:11,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:11,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:11,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:20:11,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:20:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:11,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 18:20:11,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 18:20:11,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 18:20:11,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:11,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625279466] [2020-09-24 18:20:11,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:11,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:11,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463948489] [2020-09-24 18:20:11,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:11,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:11,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:11,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:11,838 INFO L87 Difference]: Start difference. First operand 1667 states and 2006 transitions. Second operand 7 states. [2020-09-24 18:20:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:13,831 INFO L93 Difference]: Finished difference Result 3496 states and 4220 transitions. [2020-09-24 18:20:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:20:13,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-09-24 18:20:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:13,841 INFO L225 Difference]: With dead ends: 3496 [2020-09-24 18:20:13,842 INFO L226 Difference]: Without dead ends: 1853 [2020-09-24 18:20:13,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:20:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2020-09-24 18:20:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1675. [2020-09-24 18:20:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1675 states. [2020-09-24 18:20:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 1969 transitions. [2020-09-24 18:20:13,895 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 1969 transitions. Word has length 215 [2020-09-24 18:20:13,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:13,895 INFO L479 AbstractCegarLoop]: Abstraction has 1675 states and 1969 transitions. [2020-09-24 18:20:13,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:13,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 1969 transitions. [2020-09-24 18:20:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-09-24 18:20:13,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:13,904 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:13,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:20:13,904 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:13,905 INFO L82 PathProgramCache]: Analyzing trace with hash 647872981, now seen corresponding path program 1 times [2020-09-24 18:20:13,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:13,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23751367] [2020-09-24 18:20:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:15,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:15,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:16,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:18,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:18,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-09-24 18:20:18,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:18,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-24 18:20:18,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:18,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:18,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:20:18,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:20:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:19,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:19,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:19,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:19,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:19,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:19,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:19,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:19,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:19,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:19,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:19,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:19,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:19,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:20:19,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:20:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:19,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:19,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:19,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:19,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:20:19,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:20:19,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:20:19,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:19,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 18:20:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:19,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:19,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:19,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:20:19,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:20:19,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:20:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:19,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 18:20:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:19,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:19,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 18:20:19,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:19,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 18:20:19,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:20:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-24 18:20:19,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23751367] [2020-09-24 18:20:19,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:19,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:19,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634060929] [2020-09-24 18:20:19,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:19,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:19,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:19,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:19,558 INFO L87 Difference]: Start difference. First operand 1675 states and 1969 transitions. Second operand 7 states. [2020-09-24 18:20:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:22,929 INFO L93 Difference]: Finished difference Result 4484 states and 5583 transitions. [2020-09-24 18:20:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:20:22,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-09-24 18:20:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:22,944 INFO L225 Difference]: With dead ends: 4484 [2020-09-24 18:20:22,945 INFO L226 Difference]: Without dead ends: 2621 [2020-09-24 18:20:22,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:20:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2020-09-24 18:20:23,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2264. [2020-09-24 18:20:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2264 states. [2020-09-24 18:20:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 2594 transitions. [2020-09-24 18:20:23,040 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 2594 transitions. Word has length 281 [2020-09-24 18:20:23,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:23,041 INFO L479 AbstractCegarLoop]: Abstraction has 2264 states and 2594 transitions. [2020-09-24 18:20:23,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:23,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 2594 transitions. [2020-09-24 18:20:23,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-09-24 18:20:23,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:23,052 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:23,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:20:23,052 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:23,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:23,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1472388450, now seen corresponding path program 1 times [2020-09-24 18:20:23,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:23,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986975341] [2020-09-24 18:20:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:23,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:23,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking...