/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:27:05,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:27:05,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:27:05,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:27:05,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:27:05,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:27:05,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:27:05,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:27:05,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:27:05,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:27:05,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:27:05,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:27:05,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:27:05,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:27:05,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:27:05,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:27:05,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:27:05,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:27:05,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:27:05,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:27:05,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:27:05,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:27:05,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:27:05,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:27:05,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:27:05,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:27:05,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:27:05,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:27:05,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:27:05,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:27:05,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:27:05,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:27:05,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:27:05,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:27:05,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:27:05,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:27:05,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:27:05,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:27:05,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:27:05,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:27:05,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:27:05,621 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 [2020-10-14 03:27:05,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:27:05,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:27:05,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:27:05,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:27:05,680 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:27:05,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:27:05,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:27:05,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:27:05,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:27:05,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:27:05,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:27:05,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:27:05,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:27:05,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:27:05,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:27:05,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:27:05,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:27:05,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:27:05,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:27:05,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:27:05,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:27:05,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:27:05,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:27:05,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:27:05,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:27:05,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:27:05,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:27:05,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:27:05,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:27:05,689 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:27:06,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:27:06,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:27:06,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:27:06,096 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:27:06,097 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:27:06,098 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label15.c [2020-10-14 03:27:06,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/975d2fdbe/0049acbfeade48138601e316ae4911f3/FLAG73bd7b709 [2020-10-14 03:27:06,997 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:27:06,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label15.c [2020-10-14 03:27:07,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/975d2fdbe/0049acbfeade48138601e316ae4911f3/FLAG73bd7b709 [2020-10-14 03:27:07,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/975d2fdbe/0049acbfeade48138601e316ae4911f3 [2020-10-14 03:27:07,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:27:07,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:27:07,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:27:07,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:27:07,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:27:07,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:27:07" (1/1) ... [2020-10-14 03:27:07,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0642d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:07, skipping insertion in model container [2020-10-14 03:27:07,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:27:07" (1/1) ... [2020-10-14 03:27:07,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:27:07,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:27:08,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:27:08,780 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:27:09,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:27:09,224 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:27:09,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:09 WrapperNode [2020-10-14 03:27:09,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:27:09,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:27:09,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:27:09,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:27:09,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:09" (1/1) ... [2020-10-14 03:27:09,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:09" (1/1) ... [2020-10-14 03:27:09,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:09" (1/1) ... [2020-10-14 03:27:09,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:09" (1/1) ... [2020-10-14 03:27:09,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:09" (1/1) ... [2020-10-14 03:27:09,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:09" (1/1) ... [2020-10-14 03:27:09,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:09" (1/1) ... [2020-10-14 03:27:09,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:27:09,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:27:09,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:27:09,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:27:09,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:09" (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 [2020-10-14 03:27:09,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:27:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:27:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:27:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:27:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:27:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:27:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:27:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:27:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:27:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:27:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:27:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:27:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:27:15,779 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:27:15,780 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:27:15,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:27:15 BoogieIcfgContainer [2020-10-14 03:27:15,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:27:15,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:27:15,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:27:15,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:27:15,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:27:07" (1/3) ... [2020-10-14 03:27:15,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b088cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:27:15, skipping insertion in model container [2020-10-14 03:27:15,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:27:09" (2/3) ... [2020-10-14 03:27:15,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b088cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:27:15, skipping insertion in model container [2020-10-14 03:27:15,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:27:15" (3/3) ... [2020-10-14 03:27:15,799 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label15.c [2020-10-14 03:27:15,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:27:15,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:27:15,843 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:27:15,877 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:27:15,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:27:15,878 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:27:15,878 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:27:15,878 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:27:15,878 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:27:15,878 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:27:15,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:27:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:27:15,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 03:27:15,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:15,921 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] [2020-10-14 03:27:15,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:15,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1844678893, now seen corresponding path program 1 times [2020-10-14 03:27:15,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:15,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171403782] [2020-10-14 03:27:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:16,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:16,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:16,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 03:27:16,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:16,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-14 03:27:16,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:16,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:27:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:27:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 03:27:16,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:27:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:16,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:16,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:16,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:16,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:16,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 03:27:16,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:16,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:27:16,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:27:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:16,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171403782] [2020-10-14 03:27:16,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:27:16,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:27:16,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502396309] [2020-10-14 03:27:16,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:27:16,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:16,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:27:16,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:27:16,660 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:27:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:25,554 INFO L93 Difference]: Finished difference Result 1245 states and 2225 transitions. [2020-10-14 03:27:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:25,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 03:27:25,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:25,584 INFO L225 Difference]: With dead ends: 1245 [2020-10-14 03:27:25,584 INFO L226 Difference]: Without dead ends: 729 [2020-10-14 03:27:25,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-10-14 03:27:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 712. [2020-10-14 03:27:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-14 03:27:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1206 transitions. [2020-10-14 03:27:25,710 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1206 transitions. Word has length 25 [2020-10-14 03:27:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:25,711 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1206 transitions. [2020-10-14 03:27:25,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:27:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1206 transitions. [2020-10-14 03:27:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 03:27:25,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:25,716 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] [2020-10-14 03:27:25,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:27:25,717 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:25,717 INFO L82 PathProgramCache]: Analyzing trace with hash -98981398, now seen corresponding path program 1 times [2020-10-14 03:27:25,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:25,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470042183] [2020-10-14 03:27:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:27,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:27,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:27:27,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:27:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1570 [2020-10-14 03:27:27,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:27,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:27:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 03:27:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:27:27,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:27,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:27,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:27,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:27,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:27:27,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:27,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:27,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:27,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:27,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:27,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:27:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:27,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:27,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:27,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:27:27,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:27,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 03:27:27,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:27,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:27,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:27:27,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 03:27:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:27,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470042183] [2020-10-14 03:27:27,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:27,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:27,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759143549] [2020-10-14 03:27:27,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:27,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:27,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:27,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:27,632 INFO L87 Difference]: Start difference. First operand 712 states and 1206 transitions. Second operand 5 states. [2020-10-14 03:27:36,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:36,908 INFO L93 Difference]: Finished difference Result 2052 states and 3529 transitions. [2020-10-14 03:27:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:36,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-14 03:27:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:36,921 INFO L225 Difference]: With dead ends: 2052 [2020-10-14 03:27:36,921 INFO L226 Difference]: Without dead ends: 1346 [2020-10-14 03:27:36,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:27:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2020-10-14 03:27:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1339. [2020-10-14 03:27:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-10-14 03:27:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1953 transitions. [2020-10-14 03:27:37,016 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1953 transitions. Word has length 94 [2020-10-14 03:27:37,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:37,018 INFO L479 AbstractCegarLoop]: Abstraction has 1339 states and 1953 transitions. [2020-10-14 03:27:37,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:37,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1953 transitions. [2020-10-14 03:27:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 03:27:37,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:37,033 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] [2020-10-14 03:27:37,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:27:37,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:37,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:37,036 INFO L82 PathProgramCache]: Analyzing trace with hash -626949676, now seen corresponding path program 1 times [2020-10-14 03:27:37,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:37,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407006883] [2020-10-14 03:27:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:37,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:37,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:37,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 03:27:37,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:27:37,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-10-14 03:27:37,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:37,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:37,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 03:27:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:27:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 03:27:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:37,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:37,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:37,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:37,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:37,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:27:37,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:37,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:27:37,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:37,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:38,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:38,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:38,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:27:38,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:27:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 03:27:38,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:38,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 03:27:38,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 03:27:38,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407006883] [2020-10-14 03:27:38,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:38,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:27:38,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448239446] [2020-10-14 03:27:38,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:38,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:38,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:38,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:38,319 INFO L87 Difference]: Start difference. First operand 1339 states and 1953 transitions. Second operand 7 states. [2020-10-14 03:27:49,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:49,252 INFO L93 Difference]: Finished difference Result 3644 states and 5463 transitions. [2020-10-14 03:27:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:27:49,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-14 03:27:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:49,267 INFO L225 Difference]: With dead ends: 3644 [2020-10-14 03:27:49,267 INFO L226 Difference]: Without dead ends: 2311 [2020-10-14 03:27:49,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:27:49,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2020-10-14 03:27:49,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2289. [2020-10-14 03:27:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2289 states. [2020-10-14 03:27:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3054 transitions. [2020-10-14 03:27:49,355 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3054 transitions. Word has length 111 [2020-10-14 03:27:49,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:49,355 INFO L479 AbstractCegarLoop]: Abstraction has 2289 states and 3054 transitions. [2020-10-14 03:27:49,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:27:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3054 transitions. [2020-10-14 03:27:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 03:27:49,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:49,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:27:49,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:27:49,365 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:49,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:49,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1706160114, now seen corresponding path program 1 times [2020-10-14 03:27:49,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:49,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950141701] [2020-10-14 03:27:49,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:49,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:49,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:51,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:51,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 03:27:51,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:51,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-10-14 03:27:51,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:51,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:27:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:27:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:51,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:51,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:51,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:27:51,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:51,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:51,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:51,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:51,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:51,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:27:51,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 03:27:51,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:51,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:27:51,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:51,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:27:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:51,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:51,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:51,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:27:51,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 03:27:51,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:51,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:51,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:27:51,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:27:52,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950141701] [2020-10-14 03:27:52,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:52,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:52,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811284029] [2020-10-14 03:27:52,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:52,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:52,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:52,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:52,034 INFO L87 Difference]: Start difference. First operand 2289 states and 3054 transitions. Second operand 7 states. [2020-10-14 03:28:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:04,409 INFO L93 Difference]: Finished difference Result 4960 states and 7113 transitions. [2020-10-14 03:28:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:28:04,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-14 03:28:04,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:04,436 INFO L225 Difference]: With dead ends: 4960 [2020-10-14 03:28:04,437 INFO L226 Difference]: Without dead ends: 3604 [2020-10-14 03:28:04,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:28:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2020-10-14 03:28:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3243. [2020-10-14 03:28:04,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-10-14 03:28:04,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4178 transitions. [2020-10-14 03:28:04,564 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4178 transitions. Word has length 203 [2020-10-14 03:28:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:04,566 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4178 transitions. [2020-10-14 03:28:04,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4178 transitions. [2020-10-14 03:28:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-14 03:28:04,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:04,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:04,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:28:04,574 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:04,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2100086539, now seen corresponding path program 1 times [2020-10-14 03:28:04,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:04,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203450916] [2020-10-14 03:28:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:04,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:04,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:06,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:07,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:09,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:09,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 03:28:09,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:28:09,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-14 03:28:09,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:09,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 336 [2020-10-14 03:28:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:28:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:09,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:09,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:09,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:09,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:09,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:28:09,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:09,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:09,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:09,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:09,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:09,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:09,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:09,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:09,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:09,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:28:09,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 03:28:09,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:09,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:09,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:09,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:09,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:28:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:10,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:10,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:10,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:28:10,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 03:28:10,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:10,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 03:28:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:28:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-14 03:28:10,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203450916] [2020-10-14 03:28:10,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:28:10,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:28:10,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933305725] [2020-10-14 03:28:10,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:28:10,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:10,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:28:10,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:28:10,370 INFO L87 Difference]: Start difference. First operand 3243 states and 4178 transitions. Second operand 5 states. [2020-10-14 03:28:18,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:18,787 INFO L93 Difference]: Finished difference Result 7739 states and 10415 transitions. [2020-10-14 03:28:18,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:18,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 351 [2020-10-14 03:28:18,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:18,821 INFO L225 Difference]: With dead ends: 7739 [2020-10-14 03:28:18,822 INFO L226 Difference]: Without dead ends: 4809 [2020-10-14 03:28:18,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:28:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2020-10-14 03:28:18,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4804. [2020-10-14 03:28:18,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4804 states. [2020-10-14 03:28:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 6287 transitions. [2020-10-14 03:28:18,967 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 6287 transitions. Word has length 351 [2020-10-14 03:28:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:18,970 INFO L479 AbstractCegarLoop]: Abstraction has 4804 states and 6287 transitions. [2020-10-14 03:28:18,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 6287 transitions. [2020-10-14 03:28:18,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-14 03:28:18,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:18,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 03:28:18,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:28:18,990 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:18,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:18,991 INFO L82 PathProgramCache]: Analyzing trace with hash -836216241, now seen corresponding path program 1 times [2020-10-14 03:28:18,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:18,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384105258] [2020-10-14 03:28:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:19,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:24,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:24,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-14 03:28:24,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:28:24,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 03:28:24,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:24,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:24,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:24,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-14 03:28:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 03:28:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:24,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:24,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:24,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:24,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:28:24,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:24,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:24,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:24,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:24,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:24,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:28:24,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:24,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 03:28:24,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:24,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:24,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:28:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:24,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:24,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:28:24,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 03:28:24,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:24,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:28:24,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:24,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 03:28:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:24,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:24,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 03:28:24,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:24,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 03:28:24,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:24,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:24,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 03:28:24,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 03:28:25,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384105258] [2020-10-14 03:28:25,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:25,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:28:25,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529765250] [2020-10-14 03:28:25,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:28:25,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:25,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:28:25,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:28:25,187 INFO L87 Difference]: Start difference. First operand 4804 states and 6287 transitions. Second operand 8 states. [2020-10-14 03:28:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:37,817 INFO L93 Difference]: Finished difference Result 11232 states and 15019 transitions. [2020-10-14 03:28:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:28:37,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 393 [2020-10-14 03:28:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:37,853 INFO L225 Difference]: With dead ends: 11232 [2020-10-14 03:28:37,853 INFO L226 Difference]: Without dead ends: 6741 [2020-10-14 03:28:37,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 03:28:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2020-10-14 03:28:38,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 6716. [2020-10-14 03:28:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6716 states. [2020-10-14 03:28:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6716 states to 6716 states and 8569 transitions. [2020-10-14 03:28:38,081 INFO L78 Accepts]: Start accepts. Automaton has 6716 states and 8569 transitions. Word has length 393 [2020-10-14 03:28:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:38,082 INFO L479 AbstractCegarLoop]: Abstraction has 6716 states and 8569 transitions. [2020-10-14 03:28:38,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:28:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 6716 states and 8569 transitions. [2020-10-14 03:28:38,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-14 03:28:38,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:38,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:28:38,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:28:38,098 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:38,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:38,098 INFO L82 PathProgramCache]: Analyzing trace with hash 502199864, now seen corresponding path program 1 times [2020-10-14 03:28:38,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:38,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054847377] [2020-10-14 03:28:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:38,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:38,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:39,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:41,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:41,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-14 03:28:41,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:28:41,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3055 [2020-10-14 03:28:41,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:41,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:41,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:28:41,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-14 03:28:41,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:41,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:41,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:28:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:41,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:41,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:41,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:41,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:28:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 03:28:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:41,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:28:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:41,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:28:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:41,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:41,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:28:41,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:41,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 03:28:41,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:41,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:41,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-14 03:28:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:28:42,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054847377] [2020-10-14 03:28:42,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:42,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:28:42,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496253316] [2020-10-14 03:28:42,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:28:42,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:42,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:28:42,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:28:42,067 INFO L87 Difference]: Start difference. First operand 6716 states and 8569 transitions. Second operand 7 states. [2020-10-14 03:28:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:55,303 INFO L93 Difference]: Finished difference Result 16603 states and 22126 transitions. [2020-10-14 03:28:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:28:55,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-10-14 03:28:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:55,362 INFO L225 Difference]: With dead ends: 16603 [2020-10-14 03:28:55,363 INFO L226 Difference]: Without dead ends: 9857 [2020-10-14 03:28:55,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:28:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9857 states. [2020-10-14 03:28:55,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9857 to 9533. [2020-10-14 03:28:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9533 states. [2020-10-14 03:28:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9533 states to 9533 states and 11320 transitions. [2020-10-14 03:28:55,689 INFO L78 Accepts]: Start accepts. Automaton has 9533 states and 11320 transitions. Word has length 394 [2020-10-14 03:28:55,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:55,690 INFO L479 AbstractCegarLoop]: Abstraction has 9533 states and 11320 transitions. [2020-10-14 03:28:55,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:55,690 INFO L276 IsEmpty]: Start isEmpty. Operand 9533 states and 11320 transitions. [2020-10-14 03:28:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-14 03:28:55,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:55,707 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 03:28:55,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:28:55,707 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:55,708 INFO L82 PathProgramCache]: Analyzing trace with hash -734156361, now seen corresponding path program 1 times [2020-10-14 03:28:55,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:55,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499146044] [2020-10-14 03:28:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:56,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:58,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:58,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:00,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:00,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:00,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-14 03:29:00,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:29:00,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 03:29:00,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:00,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 03:29:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:29:00,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:00,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:00,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:00,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:00,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:00,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:00,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:29:00,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:00,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:00,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:00,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:00,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:00,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:00,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:01,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:01,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:01,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:29:01,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:01,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 03:29:01,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:01,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:01,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:01,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:01,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:29:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:01,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:01,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:29:01,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:29:01,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:01,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:29:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:29:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:29:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:01,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:01,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:01,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:29:01,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:01,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 03:29:01,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:01,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:29:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:01,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-10-14 03:29:01,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499146044] [2020-10-14 03:29:01,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:01,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:29:01,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6058887] [2020-10-14 03:29:01,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:29:01,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:01,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:29:01,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:29:01,571 INFO L87 Difference]: Start difference. First operand 9533 states and 11320 transitions. Second operand 5 states. [2020-10-14 03:29:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:07,794 INFO L93 Difference]: Finished difference Result 22805 states and 27375 transitions. [2020-10-14 03:29:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:29:07,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 397 [2020-10-14 03:29:07,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:07,838 INFO L225 Difference]: With dead ends: 22805 [2020-10-14 03:29:07,838 INFO L226 Difference]: Without dead ends: 13585 [2020-10-14 03:29:07,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:29:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13585 states. [2020-10-14 03:29:08,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13585 to 12952. [2020-10-14 03:29:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12952 states. [2020-10-14 03:29:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12952 states to 12952 states and 15400 transitions. [2020-10-14 03:29:08,143 INFO L78 Accepts]: Start accepts. Automaton has 12952 states and 15400 transitions. Word has length 397 [2020-10-14 03:29:08,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:08,145 INFO L479 AbstractCegarLoop]: Abstraction has 12952 states and 15400 transitions. [2020-10-14 03:29:08,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:29:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 12952 states and 15400 transitions. [2020-10-14 03:29:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-14 03:29:08,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:08,157 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 03:29:08,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:29:08,157 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:08,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:08,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1276315175, now seen corresponding path program 1 times [2020-10-14 03:29:08,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:08,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36166634] [2020-10-14 03:29:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:08,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:10,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:13,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:13,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-14 03:29:13,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:29:13,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 03:29:13,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:13,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 03:29:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:29:13,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:13,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:13,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:13,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:29:13,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:13,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:13,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:13,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:13,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:29:13,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:13,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 03:29:13,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:13,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:13,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:29:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:13,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:13,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:29:13,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 03:29:13,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:13,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:29:13,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:13,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:29:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:13,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:13,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 03:29:13,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 03:29:13,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:13,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 03:29:13,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 03:29:13,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36166634] [2020-10-14 03:29:13,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:13,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:13,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111130061] [2020-10-14 03:29:13,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:13,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:13,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:13,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:13,814 INFO L87 Difference]: Start difference. First operand 12952 states and 15400 transitions. Second operand 7 states. [2020-10-14 03:29:27,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:27,193 INFO L93 Difference]: Finished difference Result 27120 states and 34345 transitions. [2020-10-14 03:29:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:29:27,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 399 [2020-10-14 03:29:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:27,265 INFO L225 Difference]: With dead ends: 27120 [2020-10-14 03:29:27,265 INFO L226 Difference]: Without dead ends: 16029 [2020-10-14 03:29:27,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:29:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16029 states. [2020-10-14 03:29:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16029 to 15813. [2020-10-14 03:29:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15813 states. [2020-10-14 03:29:27,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15813 states to 15813 states and 18837 transitions. [2020-10-14 03:29:27,713 INFO L78 Accepts]: Start accepts. Automaton has 15813 states and 18837 transitions. Word has length 399 [2020-10-14 03:29:27,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:27,714 INFO L479 AbstractCegarLoop]: Abstraction has 15813 states and 18837 transitions. [2020-10-14 03:29:27,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:27,715 INFO L276 IsEmpty]: Start isEmpty. Operand 15813 states and 18837 transitions. [2020-10-14 03:29:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-14 03:29:27,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:27,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:27,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:29:27,730 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:27,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:27,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1329413327, now seen corresponding path program 1 times [2020-10-14 03:29:27,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:27,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318733222] [2020-10-14 03:29:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:28,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:29,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:29,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-14 03:29:29,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:29:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-10-14 03:29:29,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:29,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:29:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 03:29:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:29,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:29,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:29,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:29,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:29,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:29:29,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:29,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:29,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:29,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:29,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:29,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:29,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:29:29,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 03:29:29,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:29,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:29:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:30,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:29:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:30,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:30,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:30,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:29:30,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 03:29:30,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:30,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:29:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:29:30,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318733222] [2020-10-14 03:29:30,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:30,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:29:30,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989419921] [2020-10-14 03:29:30,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:29:30,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:30,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:29:30,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:29:30,453 INFO L87 Difference]: Start difference. First operand 15813 states and 18837 transitions. Second operand 8 states. [2020-10-14 03:29:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:39,995 INFO L93 Difference]: Finished difference Result 36907 states and 44658 transitions. [2020-10-14 03:29:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:29:39,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 398 [2020-10-14 03:29:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:40,065 INFO L225 Difference]: With dead ends: 36907 [2020-10-14 03:29:40,065 INFO L226 Difference]: Without dead ends: 21096 [2020-10-14 03:29:40,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:29:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21096 states. [2020-10-14 03:29:40,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21096 to 19859. [2020-10-14 03:29:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19859 states. [2020-10-14 03:29:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19859 states to 19859 states and 23200 transitions. [2020-10-14 03:29:40,457 INFO L78 Accepts]: Start accepts. Automaton has 19859 states and 23200 transitions. Word has length 398 [2020-10-14 03:29:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:40,458 INFO L479 AbstractCegarLoop]: Abstraction has 19859 states and 23200 transitions. [2020-10-14 03:29:40,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:29:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 19859 states and 23200 transitions. [2020-10-14 03:29:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-14 03:29:40,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:40,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:40,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:29:40,470 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:40,471 INFO L82 PathProgramCache]: Analyzing trace with hash 863579303, now seen corresponding path program 1 times [2020-10-14 03:29:40,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:40,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320811083] [2020-10-14 03:29:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:40,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:42,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:42,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-14 03:29:42,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:29:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1977 [2020-10-14 03:29:42,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:42,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:29:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:29:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:42,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:42,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:42,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:42,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:42,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:29:42,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:42,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:42,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:42,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:42,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:29:42,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 03:29:42,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:42,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:29:42,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:42,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:29:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:42,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:43,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:43,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:29:43,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:43,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 03:29:43,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:43,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:29:43,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:29:43,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320811083] [2020-10-14 03:29:43,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:43,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:29:43,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287042208] [2020-10-14 03:29:43,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:29:43,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:43,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:29:43,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:29:43,388 INFO L87 Difference]: Start difference. First operand 19859 states and 23200 transitions. Second operand 8 states. [2020-10-14 03:29:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:51,156 INFO L93 Difference]: Finished difference Result 40618 states and 49237 transitions. [2020-10-14 03:29:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:29:51,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 410 [2020-10-14 03:29:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:51,240 INFO L225 Difference]: With dead ends: 40618 [2020-10-14 03:29:51,241 INFO L226 Difference]: Without dead ends: 21072 [2020-10-14 03:29:51,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:29:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21072 states. [2020-10-14 03:29:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21072 to 20183. [2020-10-14 03:29:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20183 states. [2020-10-14 03:29:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20183 states to 20183 states and 23538 transitions. [2020-10-14 03:29:51,811 INFO L78 Accepts]: Start accepts. Automaton has 20183 states and 23538 transitions. Word has length 410 [2020-10-14 03:29:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:51,812 INFO L479 AbstractCegarLoop]: Abstraction has 20183 states and 23538 transitions. [2020-10-14 03:29:51,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:29:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 20183 states and 23538 transitions. [2020-10-14 03:29:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-14 03:29:51,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:51,824 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:51,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:29:51,825 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:51,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:51,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1352280133, now seen corresponding path program 1 times [2020-10-14 03:29:51,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:51,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731910660] [2020-10-14 03:29:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:51,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:52,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:56,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:56,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-14 03:29:56,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:29:56,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 03:29:56,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:56,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:29:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:29:56,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:57,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:57,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:57,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:57,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:57,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:57,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:29:57,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:57,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:57,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:57,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:57,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:57,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:29:57,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 03:29:57,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:57,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:29:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:29:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:57,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:57,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:57,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:29:57,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 03:29:57,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:57,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:29:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:29:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:57,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:57,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:57,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 03:29:57,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 03:29:57,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:57,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:29:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 166 proven. 87 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 03:29:57,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731910660] [2020-10-14 03:29:57,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:57,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:57,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42815302] [2020-10-14 03:29:57,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:57,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:57,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:57,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:57,604 INFO L87 Difference]: Start difference. First operand 20183 states and 23538 transitions. Second operand 7 states. [2020-10-14 03:30:11,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:11,783 INFO L93 Difference]: Finished difference Result 42518 states and 51520 transitions. [2020-10-14 03:30:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:30:11,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 424 [2020-10-14 03:30:11,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:11,847 INFO L225 Difference]: With dead ends: 42518 [2020-10-14 03:30:11,848 INFO L226 Difference]: Without dead ends: 22648 [2020-10-14 03:30:11,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:30:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22648 states. [2020-10-14 03:30:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22648 to 21728. [2020-10-14 03:30:12,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21728 states. [2020-10-14 03:30:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21728 states to 21728 states and 25288 transitions. [2020-10-14 03:30:12,454 INFO L78 Accepts]: Start accepts. Automaton has 21728 states and 25288 transitions. Word has length 424 [2020-10-14 03:30:12,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:12,455 INFO L479 AbstractCegarLoop]: Abstraction has 21728 states and 25288 transitions. [2020-10-14 03:30:12,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:12,455 INFO L276 IsEmpty]: Start isEmpty. Operand 21728 states and 25288 transitions. [2020-10-14 03:30:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-14 03:30:12,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:12,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:12,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:30:12,465 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:12,465 INFO L82 PathProgramCache]: Analyzing trace with hash 91796719, now seen corresponding path program 1 times [2020-10-14 03:30:12,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:12,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233470148] [2020-10-14 03:30:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:13,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:14,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:17,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:17,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-14 03:30:17,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:30:17,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 03:30:17,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:17,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:17,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:17,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 03:30:17,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:30:17,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:17,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:17,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:17,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:17,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:17,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:30:17,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:17,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:17,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:17,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:17,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:17,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:30:17,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:30:17,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:17,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:17,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:30:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:17,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:17,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:17,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:30:17,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:17,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 03:30:17,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:17,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:30:17,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:17,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-14 03:30:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:17,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:17,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:17,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:30:17,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:17,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:30:17,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:17,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:30:17,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 259 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 03:30:18,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233470148] [2020-10-14 03:30:18,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:18,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:18,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942665051] [2020-10-14 03:30:18,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:18,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:18,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:18,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:18,079 INFO L87 Difference]: Start difference. First operand 21728 states and 25288 transitions. Second operand 7 states. [2020-10-14 03:30:30,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:30,467 INFO L93 Difference]: Finished difference Result 46491 states and 54502 transitions. [2020-10-14 03:30:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:30:30,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-14 03:30:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:30,553 INFO L225 Difference]: With dead ends: 46491 [2020-10-14 03:30:30,553 INFO L226 Difference]: Without dead ends: 27557 [2020-10-14 03:30:30,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:30:30,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27557 states. [2020-10-14 03:30:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27557 to 25713. [2020-10-14 03:30:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25713 states. [2020-10-14 03:30:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25713 states to 25713 states and 29669 transitions. [2020-10-14 03:30:31,082 INFO L78 Accepts]: Start accepts. Automaton has 25713 states and 29669 transitions. Word has length 433 [2020-10-14 03:30:31,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:31,083 INFO L479 AbstractCegarLoop]: Abstraction has 25713 states and 29669 transitions. [2020-10-14 03:30:31,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 25713 states and 29669 transitions. [2020-10-14 03:30:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-14 03:30:31,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:31,096 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:31,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:30:31,096 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:31,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:31,097 INFO L82 PathProgramCache]: Analyzing trace with hash -104485440, now seen corresponding path program 1 times [2020-10-14 03:30:31,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:31,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360783427] [2020-10-14 03:30:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:31,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:32,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:36,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:36,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-14 03:30:36,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:30:36,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 03:30:36,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:36,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:30:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 03:30:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:36,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:36,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:36,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:36,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:36,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:36,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:30:36,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:36,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:36,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:36,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:36,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:36,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:30:36,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:36,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 03:30:36,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:36,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:36,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:36,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:30:36,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:30:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:36,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:36,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 03:30:36,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:36,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 03:30:36,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:36,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 03:30:36,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:37,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-14 03:30:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:37,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:37,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:37,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 03:30:37,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:30:37,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:37,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:30:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 199 proven. 87 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 03:30:37,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360783427] [2020-10-14 03:30:37,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:37,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:37,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216820461] [2020-10-14 03:30:37,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:37,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:37,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:37,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:37,160 INFO L87 Difference]: Start difference. First operand 25713 states and 29669 transitions. Second operand 7 states. [2020-10-14 03:30:47,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:47,982 INFO L93 Difference]: Finished difference Result 55136 states and 63661 transitions. [2020-10-14 03:30:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:30:47,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 457 [2020-10-14 03:30:47,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:48,086 INFO L225 Difference]: With dead ends: 55136 [2020-10-14 03:30:48,087 INFO L226 Difference]: Without dead ends: 29405 [2020-10-14 03:30:48,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:30:48,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29405 states. [2020-10-14 03:30:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29405 to 28476. [2020-10-14 03:30:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28476 states. [2020-10-14 03:30:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28476 states to 28476 states and 32180 transitions. [2020-10-14 03:30:48,666 INFO L78 Accepts]: Start accepts. Automaton has 28476 states and 32180 transitions. Word has length 457 [2020-10-14 03:30:48,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:48,666 INFO L479 AbstractCegarLoop]: Abstraction has 28476 states and 32180 transitions. [2020-10-14 03:30:48,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:30:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 28476 states and 32180 transitions. [2020-10-14 03:30:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-14 03:30:48,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:48,675 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:48,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:30:48,676 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:48,676 INFO L82 PathProgramCache]: Analyzing trace with hash 393054957, now seen corresponding path program 1 times [2020-10-14 03:30:48,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:48,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612228129] [2020-10-14 03:30:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:49,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:49,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking...