/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/Problem13_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:13:02,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:13:02,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:13:02,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:13:02,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:13:02,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:13:02,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:13:02,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:13:02,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:13:02,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:13:02,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:13:02,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:13:02,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:13:02,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:13:02,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:13:02,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:13:02,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:13:02,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:13:02,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:13:02,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:13:02,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:13:02,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:13:02,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:13:02,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:13:02,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:13:02,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:13:02,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:13:02,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:13:02,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:13:02,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:13:02,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:13:02,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:13:02,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:13:02,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:13:02,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:13:02,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:13:02,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:13:02,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:13:02,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:13:02,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:13:02,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:13:02,817 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 03:13:02,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:13:02,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:13:02,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:13:02,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:13:02,843 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:13:02,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:13:02,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:13:02,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:13:02,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:13:02,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:13:02,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:13:02,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:13:02,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:13:02,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:13:02,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:13:02,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:13:02,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:13:02,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:13:02,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:13:02,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:13:02,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:13:02,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:13:02,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:13:02,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:13:02,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:13:02,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:13:02,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:13:02,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:13:02,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:13:02,848 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 03:13:03,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:13:03,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:13:03,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:13:03,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:13:03,218 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:13:03,219 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label58.c [2020-10-14 03:13:03,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/733228da2/c432da14383345e1b1ddd29c4531966f/FLAG4ee5ee4c6 [2020-10-14 03:13:04,118 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:13:04,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label58.c [2020-10-14 03:13:04,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/733228da2/c432da14383345e1b1ddd29c4531966f/FLAG4ee5ee4c6 [2020-10-14 03:13:04,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/733228da2/c432da14383345e1b1ddd29c4531966f [2020-10-14 03:13:04,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:13:04,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:13:04,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:13:04,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:13:04,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:13:04,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:13:04" (1/1) ... [2020-10-14 03:13:04,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:04, skipping insertion in model container [2020-10-14 03:13:04,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:13:04" (1/1) ... [2020-10-14 03:13:04,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:13:04,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:13:06,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:13:06,542 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:13:07,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:13:07,359 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:13:07,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:07 WrapperNode [2020-10-14 03:13:07,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:13:07,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:13:07,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:13:07,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:13:07,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:07" (1/1) ... [2020-10-14 03:13:07,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:07" (1/1) ... [2020-10-14 03:13:07,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:07" (1/1) ... [2020-10-14 03:13:07,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:07" (1/1) ... [2020-10-14 03:13:07,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:07" (1/1) ... [2020-10-14 03:13:07,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:07" (1/1) ... [2020-10-14 03:13:07,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:07" (1/1) ... [2020-10-14 03:13:07,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:13:07,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:13:07,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:13:07,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:13:07,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:13:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:13:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:13:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:13:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:13:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:13:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:13:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:13:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:13:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:13:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:13:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:13:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:13:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:13:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:13:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:13:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:13:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:13:19,476 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:13:19,477 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:13:19,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:13:19 BoogieIcfgContainer [2020-10-14 03:13:19,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:13:19,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:13:19,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:13:19,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:13:19,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:13:04" (1/3) ... [2020-10-14 03:13:19,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a0ac15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:13:19, skipping insertion in model container [2020-10-14 03:13:19,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:13:07" (2/3) ... [2020-10-14 03:13:19,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a0ac15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:13:19, skipping insertion in model container [2020-10-14 03:13:19,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:13:19" (3/3) ... [2020-10-14 03:13:19,510 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label58.c [2020-10-14 03:13:19,538 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:13:19,551 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:13:19,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:13:19,619 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:13:19,619 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:13:19,619 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:13:19,620 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:13:19,620 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:13:19,620 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:13:19,620 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:13:19,621 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:13:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:13:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 03:13:19,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:19,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:13:19,686 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:19,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1431834345, now seen corresponding path program 1 times [2020-10-14 03:13:19,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:19,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428738379] [2020-10-14 03:13:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:19,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:20,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:20,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 03:13:20,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:20,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 03:13:20,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:20,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:13:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:13:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 03:13:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:13:20,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:20,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:20,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:20,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:20,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:20,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:13:20,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:20,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:13:20,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:20,467 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 03:13:20,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428738379] [2020-10-14 03:13:20,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:13:20,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 03:13:20,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345469267] [2020-10-14 03:13:20,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:13:20,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:13:20,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:13:20,506 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 03:13:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:37,866 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-14 03:13:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:13:37,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-14 03:13:37,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:37,913 INFO L225 Difference]: With dead ends: 4080 [2020-10-14 03:13:37,913 INFO L226 Difference]: Without dead ends: 2872 [2020-10-14 03:13:37,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:13:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-14 03:13:38,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-14 03:13:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-14 03:13:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-14 03:13:38,141 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 18 [2020-10-14 03:13:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:38,142 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-14 03:13:38,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:13:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-14 03:13:38,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 03:13:38,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:38,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:13:38,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:13:38,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:38,148 INFO L82 PathProgramCache]: Analyzing trace with hash 6915315, now seen corresponding path program 1 times [2020-10-14 03:13:38,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:38,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547079719] [2020-10-14 03:13:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:39,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:39,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 03:13:39,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:13:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-14 03:13:39,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:39,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:13:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 03:13:39,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:13:39,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:39,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:39,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:39,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:13:39,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:39,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:13:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:13:39,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:13:39,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:39,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:39,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:39,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:13:39,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:39,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 03:13:39,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:39,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:13:39,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:13:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:13:39,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547079719] [2020-10-14 03:13:39,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:13:39,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:13:39,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460556011] [2020-10-14 03:13:39,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:13:39,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:39,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:13:39,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:13:39,918 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 6 states. [2020-10-14 03:14:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:14:02,747 INFO L93 Difference]: Finished difference Result 7169 states and 12033 transitions. [2020-10-14 03:14:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:14:02,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-14 03:14:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:14:02,789 INFO L225 Difference]: With dead ends: 7169 [2020-10-14 03:14:02,790 INFO L226 Difference]: Without dead ends: 5241 [2020-10-14 03:14:02,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:14:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5241 states. [2020-10-14 03:14:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5241 to 5224. [2020-10-14 03:14:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5224 states. [2020-10-14 03:14:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5224 states to 5224 states and 7999 transitions. [2020-10-14 03:14:03,014 INFO L78 Accepts]: Start accepts. Automaton has 5224 states and 7999 transitions. Word has length 93 [2020-10-14 03:14:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:14:03,016 INFO L479 AbstractCegarLoop]: Abstraction has 5224 states and 7999 transitions. [2020-10-14 03:14:03,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:14:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5224 states and 7999 transitions. [2020-10-14 03:14:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 03:14:03,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:14:03,035 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:14:03,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:14:03,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:14:03,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:14:03,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1055201033, now seen corresponding path program 1 times [2020-10-14 03:14:03,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:14:03,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723278299] [2020-10-14 03:14:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:14:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:04,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:08,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:08,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 03:14:08,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:14:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 03:14:08,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:08,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:14:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:14:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:14:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:08,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:14:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:08,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:08,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:14:08,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:14:08,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:08,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:14:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:14:08,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:08,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:14:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:08,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:08,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:08,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:14:08,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 03:14:08,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:08,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:14:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:14:08,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:14:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:08,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:08,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:08,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:14:08,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 03:14:08,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:08,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:14:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:14:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:14:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:14:08,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723278299] [2020-10-14 03:14:08,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:14:08,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:14:08,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405494194] [2020-10-14 03:14:08,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:14:08,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:14:08,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:14:08,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:14:08,684 INFO L87 Difference]: Start difference. First operand 5224 states and 7999 transitions. Second operand 7 states. [2020-10-14 03:14:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:14:37,808 INFO L93 Difference]: Finished difference Result 15656 states and 24839 transitions. [2020-10-14 03:14:37,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:14:37,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-14 03:14:37,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:14:37,872 INFO L225 Difference]: With dead ends: 15656 [2020-10-14 03:14:37,872 INFO L226 Difference]: Without dead ends: 10438 [2020-10-14 03:14:37,887 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 03:14:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10438 states. [2020-10-14 03:14:38,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10438 to 10313. [2020-10-14 03:14:38,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10313 states. [2020-10-14 03:14:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10313 states to 10313 states and 16188 transitions. [2020-10-14 03:14:38,189 INFO L78 Accepts]: Start accepts. Automaton has 10313 states and 16188 transitions. Word has length 169 [2020-10-14 03:14:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:14:38,192 INFO L479 AbstractCegarLoop]: Abstraction has 10313 states and 16188 transitions. [2020-10-14 03:14:38,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:14:38,193 INFO L276 IsEmpty]: Start isEmpty. Operand 10313 states and 16188 transitions. [2020-10-14 03:14:38,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 03:14:38,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:14:38,203 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 03:14:38,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:14:38,204 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:14:38,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:14:38,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1919871411, now seen corresponding path program 1 times [2020-10-14 03:14:38,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:14:38,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769245691] [2020-10-14 03:14:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:14:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:38,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:42,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:42,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 03:14:42,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:14:42,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4357 [2020-10-14 03:14:42,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:42,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:14:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:14:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:14:42,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:42,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:14:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:42,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:42,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:14:42,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:14:42,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:42,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:14:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:14:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:14:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:42,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:42,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:42,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 03:14:42,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 03:14:42,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:42,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:14:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:14:42,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:42,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 03:14:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:43,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:43,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:14:43,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:43,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 03:14:43,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:43,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:14:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:14:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 03:14:43,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:14:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:14:43,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769245691] [2020-10-14 03:14:43,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:14:43,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:14:43,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046196065] [2020-10-14 03:14:43,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:14:43,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:14:43,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:14:43,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:14:43,259 INFO L87 Difference]: Start difference. First operand 10313 states and 16188 transitions. Second operand 7 states. [2020-10-14 03:15:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:15:03,929 INFO L93 Difference]: Finished difference Result 24421 states and 41593 transitions. [2020-10-14 03:15:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:15:03,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-14 03:15:03,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:15:04,012 INFO L225 Difference]: With dead ends: 24421 [2020-10-14 03:15:04,012 INFO L226 Difference]: Without dead ends: 14114 [2020-10-14 03:15:04,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:15:04,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14114 states. [2020-10-14 03:15:04,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14114 to 13886. [2020-10-14 03:15:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13886 states. [2020-10-14 03:15:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13886 states to 13886 states and 21249 transitions. [2020-10-14 03:15:04,485 INFO L78 Accepts]: Start accepts. Automaton has 13886 states and 21249 transitions. Word has length 214 [2020-10-14 03:15:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:15:04,487 INFO L479 AbstractCegarLoop]: Abstraction has 13886 states and 21249 transitions. [2020-10-14 03:15:04,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:15:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 13886 states and 21249 transitions. [2020-10-14 03:15:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 03:15:04,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:15:04,494 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 03:15:04,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:15:04,495 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:15:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:15:04,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1284263961, now seen corresponding path program 1 times [2020-10-14 03:15:04,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:15:04,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463860758] [2020-10-14 03:15:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:15:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:04,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:04,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:07,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:09,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:09,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 03:15:09,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:15:09,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4648 [2020-10-14 03:15:09,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:09,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:15:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 03:15:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:15:09,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:15:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:15:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:09,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:09,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:09,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:15:09,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:09,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:15:09,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:09,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:09,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:15:09,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:09,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:15:09,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:09,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:15:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:09,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:09,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:09,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:15:09,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:09,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 03:15:09,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:09,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:15:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:09,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 03:15:09,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:09,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 03:15:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:09,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:09,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:15:09,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 03:15:09,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:09,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:15:09,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:15:09,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 03:15:09,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:15:09,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463860758] [2020-10-14 03:15:09,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:15:09,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:15:09,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735670414] [2020-10-14 03:15:09,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:15:09,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:15:09,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:15:09,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:15:09,766 INFO L87 Difference]: Start difference. First operand 13886 states and 21249 transitions. Second operand 7 states. [2020-10-14 03:15:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:15:37,856 INFO L93 Difference]: Finished difference Result 42090 states and 75001 transitions. [2020-10-14 03:15:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:15:37,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-14 03:15:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:15:38,011 INFO L225 Difference]: With dead ends: 42090 [2020-10-14 03:15:38,011 INFO L226 Difference]: Without dead ends: 28210 [2020-10-14 03:15:38,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:15:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28210 states. [2020-10-14 03:15:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28210 to 27695. [2020-10-14 03:15:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27695 states. [2020-10-14 03:15:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27695 states to 27695 states and 39408 transitions. [2020-10-14 03:15:38,942 INFO L78 Accepts]: Start accepts. Automaton has 27695 states and 39408 transitions. Word has length 215 [2020-10-14 03:15:38,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:15:38,943 INFO L479 AbstractCegarLoop]: Abstraction has 27695 states and 39408 transitions. [2020-10-14 03:15:38,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:15:38,944 INFO L276 IsEmpty]: Start isEmpty. Operand 27695 states and 39408 transitions. [2020-10-14 03:15:38,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 03:15:38,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:15:38,956 INFO L422 BasicCegarLoop]: trace histogram [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, 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 03:15:38,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:15:38,956 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:15:38,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:15:38,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2087810757, now seen corresponding path program 1 times [2020-10-14 03:15:38,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:15:38,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252119774] [2020-10-14 03:15:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:15:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:39,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:39,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:41,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:41,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 03:15:41,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:15:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2737 [2020-10-14 03:15:41,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:41,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:15:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 03:15:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:15:41,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:15:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:41,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:41,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:41,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:15:41,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:41,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:15:41,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:41,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:15:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:15:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:15:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:41,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:41,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:41,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:15:41,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 03:15:41,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:41,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:15:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:15:41,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:42,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:15:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:42,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:15:42,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 03:15:42,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:42,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:15:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:15:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 03:15:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:15:42,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252119774] [2020-10-14 03:15:42,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:15:42,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:15:42,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889050294] [2020-10-14 03:15:42,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:15:42,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:15:42,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:15:42,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:15:42,430 INFO L87 Difference]: Start difference. First operand 27695 states and 39408 transitions. Second operand 7 states. [2020-10-14 03:16:08,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:16:08,540 INFO L93 Difference]: Finished difference Result 78221 states and 121150 transitions. [2020-10-14 03:16:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:16:08,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-14 03:16:08,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:16:08,744 INFO L225 Difference]: With dead ends: 78221 [2020-10-14 03:16:08,744 INFO L226 Difference]: Without dead ends: 50532 [2020-10-14 03:16:08,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 03:16:08,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50532 states. [2020-10-14 03:16:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50532 to 50176. [2020-10-14 03:16:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50176 states. [2020-10-14 03:16:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50176 states to 50176 states and 76035 transitions. [2020-10-14 03:16:10,279 INFO L78 Accepts]: Start accepts. Automaton has 50176 states and 76035 transitions. Word has length 218 [2020-10-14 03:16:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:16:10,280 INFO L479 AbstractCegarLoop]: Abstraction has 50176 states and 76035 transitions. [2020-10-14 03:16:10,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:16:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 50176 states and 76035 transitions. [2020-10-14 03:16:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 03:16:10,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:16:10,295 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:10,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:16:10,295 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:16:10,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:16:10,296 INFO L82 PathProgramCache]: Analyzing trace with hash 802077938, now seen corresponding path program 1 times [2020-10-14 03:16:10,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:16:10,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649299741] [2020-10-14 03:16:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:16:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:10,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:10,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:11,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:15,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:15,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:16:15,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:16:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 03:16:15,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:15,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:16:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 03:16:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 03:16:15,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:16:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:16:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:15,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:15,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:15,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:16:15,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:16:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:16:15,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:15,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:16:15,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:16:15,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:16:15,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:16:15,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:16:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:15,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:15,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:15,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:16:15,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:16:15,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 03:16:15,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:15,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:16:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:16:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:16:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:16:15,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:16:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:15,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:16,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 03:16:16,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:16:16,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-14 03:16:16,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:16,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:16:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:16:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 03:16:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:16:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:16:16,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649299741] [2020-10-14 03:16:16,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:16:16,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:16:16,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903103716] [2020-10-14 03:16:16,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:16:16,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:16:16,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:16:16,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:16:16,327 INFO L87 Difference]: Start difference. First operand 50176 states and 76035 transitions. Second operand 7 states. [2020-10-14 03:16:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:16:42,274 INFO L93 Difference]: Finished difference Result 127308 states and 215892 transitions. [2020-10-14 03:16:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:16:42,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-14 03:16:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:16:42,649 INFO L225 Difference]: With dead ends: 127308 [2020-10-14 03:16:42,649 INFO L226 Difference]: Without dead ends: 77138 [2020-10-14 03:16:42,749 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 03:16:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77138 states. [2020-10-14 03:16:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77138 to 76890. [2020-10-14 03:16:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76890 states. [2020-10-14 03:16:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76890 states to 76890 states and 120924 transitions. [2020-10-14 03:16:44,808 INFO L78 Accepts]: Start accepts. Automaton has 76890 states and 120924 transitions. Word has length 275 [2020-10-14 03:16:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:16:44,809 INFO L479 AbstractCegarLoop]: Abstraction has 76890 states and 120924 transitions. [2020-10-14 03:16:44,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:16:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 76890 states and 120924 transitions. [2020-10-14 03:16:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-14 03:16:44,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:16:44,836 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:16:44,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:16:44,837 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:16:44,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:16:44,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1829939329, now seen corresponding path program 1 times [2020-10-14 03:16:44,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:16:44,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421843402] [2020-10-14 03:16:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:16:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:45,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:47,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:49,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:49,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 03:16:49,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:16:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 03:16:49,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:49,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:16:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-14 03:16:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 03:16:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:16:50,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:16:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:50,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:50,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:16:50,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:16:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:16:50,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:50,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:50,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:16:50,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:16:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:16:50,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:16:50,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:16:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:50,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:16:50,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 03:16:50,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:16:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 03:16:50,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:16:50,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:16:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:16:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:16:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:16:50,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:16:50,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113