/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/Problem02_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:09,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:09,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:09,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:09,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:09,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:09,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:09,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:09,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:09,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:09,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:09,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:09,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:09,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:09,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:09,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:09,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:09,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:09,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:09,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:09,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:09,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:09,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:09,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:09,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:09,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:09,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:09,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:09,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:09,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:09,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:09,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:09,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:09,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:09,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:09,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:09,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:09,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:09,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:09,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:09,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:09,646 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 18:23:09,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:09,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:09,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:09,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:09,674 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:09,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:09,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:09,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:09,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:09,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:09,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:09,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:09,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:09,675 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:09,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:09,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:09,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:09,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:09,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:09,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:09,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:09,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:09,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:09,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:09,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:09,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:09,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:09,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:09,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:09,679 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 18:23:10,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:10,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:10,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:10,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:10,168 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:10,169 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-24 18:23:10,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec58258ae/f4427aab7a64484e80a1d8e1581f5a87/FLAG1f098f0ae [2020-09-24 18:23:10,925 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:10,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-24 18:23:10,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec58258ae/f4427aab7a64484e80a1d8e1581f5a87/FLAG1f098f0ae [2020-09-24 18:23:11,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec58258ae/f4427aab7a64484e80a1d8e1581f5a87 [2020-09-24 18:23:11,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:11,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:11,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:11,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:11,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:11,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:11" (1/1) ... [2020-09-24 18:23:11,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134b79fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:11, skipping insertion in model container [2020-09-24 18:23:11,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:11" (1/1) ... [2020-09-24 18:23:11,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:11,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:11,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:11,740 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:11,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:12,002 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:12,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:12 WrapperNode [2020-09-24 18:23:12,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:12,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:12,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:12,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:12,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:12" (1/1) ... [2020-09-24 18:23:12,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:12" (1/1) ... [2020-09-24 18:23:12,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:12" (1/1) ... [2020-09-24 18:23:12,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:12" (1/1) ... [2020-09-24 18:23:12,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:12" (1/1) ... [2020-09-24 18:23:12,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:12" (1/1) ... [2020-09-24 18:23:12,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:12" (1/1) ... [2020-09-24 18:23:12,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:12,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:12,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:12,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:12,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:12" (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 18:23:12,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:13,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:13,609 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:13,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:13 BoogieIcfgContainer [2020-09-24 18:23:13,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:13,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:13,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:13,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:13,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:11" (1/3) ... [2020-09-24 18:23:13,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e11ad35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:13, skipping insertion in model container [2020-09-24 18:23:13,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:12" (2/3) ... [2020-09-24 18:23:13,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e11ad35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:13, skipping insertion in model container [2020-09-24 18:23:13,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:13" (3/3) ... [2020-09-24 18:23:13,643 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label47.c [2020-09-24 18:23:13,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:13,665 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:13,688 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:13,721 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:13,722 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:13,722 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:13,722 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:13,722 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:13,722 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:13,722 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:13,722 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 18:23:13,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:13,777 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] [2020-09-24 18:23:13,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:13,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:13,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1682076970, now seen corresponding path program 1 times [2020-09-24 18:23:13,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:13,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710150550] [2020-09-24 18:23:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:15,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:15,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:19,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 18:23:19,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:23:19,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:23:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 18:23:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:19,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:19,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:23:19,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:19,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:23:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:19,382 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 18:23:19,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710150550] [2020-09-24 18:23:19,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:19,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:19,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228539541] [2020-09-24 18:23:19,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:19,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:19,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:19,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:19,416 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:21,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:21,720 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-24 18:23:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:21,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-24 18:23:21,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:21,754 INFO L225 Difference]: With dead ends: 1396 [2020-09-24 18:23:21,755 INFO L226 Difference]: Without dead ends: 788 [2020-09-24 18:23:21,766 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 18:23:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-24 18:23:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-24 18:23:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-24 18:23:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-24 18:23:21,871 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 133 [2020-09-24 18:23:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:21,872 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-24 18:23:21,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-24 18:23:21,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 18:23:21,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:21,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:21,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:21,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:21,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:21,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1624674134, now seen corresponding path program 1 times [2020-09-24 18:23:21,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:21,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088270178] [2020-09-24 18:23:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:26,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-24 18:23:26,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:23:26,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:23:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-24 18:23:26,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:27,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:27,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:27,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:27,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:27,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:27,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:27,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:27,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:27,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:27,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:27,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:27,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:23:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:27,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088270178] [2020-09-24 18:23:27,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:27,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:27,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017191675] [2020-09-24 18:23:27,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:27,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:27,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:27,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:27,174 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-24 18:23:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:28,971 INFO L93 Difference]: Finished difference Result 1624 states and 2084 transitions. [2020-09-24 18:23:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:28,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-24 18:23:28,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:28,981 INFO L225 Difference]: With dead ends: 1624 [2020-09-24 18:23:28,982 INFO L226 Difference]: Without dead ends: 981 [2020-09-24 18:23:28,985 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 18:23:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-09-24 18:23:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 969. [2020-09-24 18:23:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-09-24 18:23:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1223 transitions. [2020-09-24 18:23:29,036 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1223 transitions. Word has length 151 [2020-09-24 18:23:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:29,037 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1223 transitions. [2020-09-24 18:23:29,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1223 transitions. [2020-09-24 18:23:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 18:23:29,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:29,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:29,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:29,044 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:29,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:29,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2099256184, now seen corresponding path program 1 times [2020-09-24 18:23:29,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:29,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747122492] [2020-09-24 18:23:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:29,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:29,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:34,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:34,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-24 18:23:34,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:23:34,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:23:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-24 18:23:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:34,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:34,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:34,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:34,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:34,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:34,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:34,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:34,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:34,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:34,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:34,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:23:34,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:23:34,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:34,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747122492] [2020-09-24 18:23:34,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:34,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:34,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000622330] [2020-09-24 18:23:34,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:34,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:34,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:34,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:34,395 INFO L87 Difference]: Start difference. First operand 969 states and 1223 transitions. Second operand 5 states. [2020-09-24 18:23:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:36,257 INFO L93 Difference]: Finished difference Result 2528 states and 3348 transitions. [2020-09-24 18:23:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:36,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-24 18:23:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:36,272 INFO L225 Difference]: With dead ends: 2528 [2020-09-24 18:23:36,272 INFO L226 Difference]: Without dead ends: 1581 [2020-09-24 18:23:36,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 18:23:36,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-09-24 18:23:36,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1569. [2020-09-24 18:23:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-09-24 18:23:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2037 transitions. [2020-09-24 18:23:36,390 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2037 transitions. Word has length 155 [2020-09-24 18:23:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:36,398 INFO L479 AbstractCegarLoop]: Abstraction has 1569 states and 2037 transitions. [2020-09-24 18:23:36,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2037 transitions. [2020-09-24 18:23:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 18:23:36,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:36,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:36,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:36,414 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:36,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:36,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1527084426, now seen corresponding path program 1 times [2020-09-24 18:23:36,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:36,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172993633] [2020-09-24 18:23:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-24 18:23:41,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:23:41,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 18:23:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 18:23:41,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:41,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:41,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:23:41,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:41,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:23:41,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:41,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:23:41,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:41,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:41,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:23:41,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:41,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172993633] [2020-09-24 18:23:41,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:41,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:41,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766721980] [2020-09-24 18:23:41,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:41,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:41,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:41,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:41,760 INFO L87 Difference]: Start difference. First operand 1569 states and 2037 transitions. Second operand 5 states. [2020-09-24 18:23:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:43,692 INFO L93 Difference]: Finished difference Result 3752 states and 5020 transitions. [2020-09-24 18:23:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:43,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-24 18:23:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:43,712 INFO L225 Difference]: With dead ends: 3752 [2020-09-24 18:23:43,712 INFO L226 Difference]: Without dead ends: 2205 [2020-09-24 18:23:43,719 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 18:23:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2020-09-24 18:23:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2029. [2020-09-24 18:23:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2029 states. [2020-09-24 18:23:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2572 transitions. [2020-09-24 18:23:43,805 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2572 transitions. Word has length 168 [2020-09-24 18:23:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:43,805 INFO L479 AbstractCegarLoop]: Abstraction has 2029 states and 2572 transitions. [2020-09-24 18:23:43,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2572 transitions. [2020-09-24 18:23:43,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 18:23:43,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:43,816 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:23:43,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:43,817 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:43,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:43,817 INFO L82 PathProgramCache]: Analyzing trace with hash -675007840, now seen corresponding path program 1 times [2020-09-24 18:23:43,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:43,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032653607] [2020-09-24 18:23:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:43,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 18:23:48,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:23:48,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:23:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:23:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:48,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:23:48,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:49,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:49,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:49,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:49,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:49,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:23:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:49,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:23:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:49,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:49,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 18:23:49,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:49,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 18:23:49,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 18:23:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:49,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032653607] [2020-09-24 18:23:49,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:49,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:49,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548880865] [2020-09-24 18:23:49,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:49,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:49,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:49,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:49,316 INFO L87 Difference]: Start difference. First operand 2029 states and 2572 transitions. Second operand 7 states. [2020-09-24 18:23:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:52,292 INFO L93 Difference]: Finished difference Result 5020 states and 7011 transitions. [2020-09-24 18:23:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:23:52,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-09-24 18:23:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:52,315 INFO L225 Difference]: With dead ends: 5020 [2020-09-24 18:23:52,315 INFO L226 Difference]: Without dead ends: 3013 [2020-09-24 18:23:52,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:52,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2020-09-24 18:23:52,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 2698. [2020-09-24 18:23:52,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2698 states. [2020-09-24 18:23:52,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 3454 transitions. [2020-09-24 18:23:52,448 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 3454 transitions. Word has length 236 [2020-09-24 18:23:52,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:52,449 INFO L479 AbstractCegarLoop]: Abstraction has 2698 states and 3454 transitions. [2020-09-24 18:23:52,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:52,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 3454 transitions. [2020-09-24 18:23:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-24 18:23:52,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:52,463 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:23:52,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:52,463 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:52,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1362761069, now seen corresponding path program 1 times [2020-09-24 18:23:52,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:52,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673047340] [2020-09-24 18:23:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:52,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:52,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:52,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:54,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:57,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-24 18:23:57,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:23:57,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 18:23:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:23:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:57,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:57,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:57,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:57,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:57,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:23:57,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:57,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:57,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:57,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:57,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:23:57,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:23:57,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:57,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:23:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:57,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:57,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:23:57,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:57,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:23:57,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:57,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 18:23:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:57,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:57,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 18:23:57,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:23:57,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 18:23:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 117 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 18:23:57,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673047340] [2020-09-24 18:23:57,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:57,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:23:57,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732616173] [2020-09-24 18:23:57,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:23:57,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:57,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:23:57,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:23:57,840 INFO L87 Difference]: Start difference. First operand 2698 states and 3454 transitions. Second operand 8 states. [2020-09-24 18:23:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:59,192 INFO L93 Difference]: Finished difference Result 4949 states and 6472 transitions. [2020-09-24 18:23:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:23:59,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 255 [2020-09-24 18:23:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:59,193 INFO L225 Difference]: With dead ends: 4949 [2020-09-24 18:23:59,193 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:23:59,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:23:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:23:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:23:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:23:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:23:59,210 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 255 [2020-09-24 18:23:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:59,210 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:23:59,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:23:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:23:59,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:23:59,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:23:59,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:24:00,233 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 18