/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem12_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:13:49,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:13:49,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:13:49,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:13:49,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:13:49,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:13:49,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:13:49,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:13:49,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:13:49,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:13:49,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:13:49,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:13:49,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:13:49,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:13:49,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:13:49,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:13:49,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:13:49,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:13:49,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:13:49,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:13:49,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:13:49,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:13:49,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:13:49,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:13:49,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:13:49,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:13:49,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:13:49,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:13:49,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:13:49,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:13:49,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:13:49,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:13:49,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:13:49,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:13:49,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:13:49,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:13:49,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:13:49,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:13:49,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:13:49,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:13:49,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:13:49,154 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 21:13:49,177 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:13:49,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:13:49,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:13:49,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:13:49,180 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:13:49,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:13:49,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:13:49,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:13:49,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:13:49,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:13:49,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:13:49,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:13:49,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:13:49,182 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:13:49,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:13:49,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:13:49,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:13:49,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:13:49,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:13:49,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:13:49,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:13:49,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:13:49,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:13:49,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:13:49,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:13:49,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:13:49,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:13:49,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:13:49,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:13:49,185 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:13:49,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:13:49,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:13:49,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:13:49,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:13:49,523 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:13:49,524 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label32.c [2020-10-14 21:13:49,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4492849b3/eff2cf7406e2465a8f6408c7294a073c/FLAG03d827f06 [2020-10-14 21:13:50,453 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:13:50,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label32.c [2020-10-14 21:13:50,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4492849b3/eff2cf7406e2465a8f6408c7294a073c/FLAG03d827f06 [2020-10-14 21:13:50,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4492849b3/eff2cf7406e2465a8f6408c7294a073c [2020-10-14 21:13:50,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:13:50,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:13:50,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:13:50,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:13:50,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:13:50,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:50" (1/1) ... [2020-10-14 21:13:50,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1573d552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:50, skipping insertion in model container [2020-10-14 21:13:50,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:50" (1/1) ... [2020-10-14 21:13:50,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:13:50,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:13:52,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:13:52,424 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:13:53,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:13:53,226 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:13:53,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:53 WrapperNode [2020-10-14 21:13:53,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:13:53,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:13:53,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:13:53,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:13:53,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:53" (1/1) ... [2020-10-14 21:13:53,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:53" (1/1) ... [2020-10-14 21:13:53,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:53" (1/1) ... [2020-10-14 21:13:53,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:53" (1/1) ... [2020-10-14 21:13:53,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:53" (1/1) ... [2020-10-14 21:13:53,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:53" (1/1) ... [2020-10-14 21:13:53,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:53" (1/1) ... [2020-10-14 21:13:53,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:13:53,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:13:53,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:13:53,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:13:53,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:53" (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 21:13:53,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:13:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:13:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:13:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:13:53,675 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:13:53,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:13:53,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:13:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:13:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:13:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:13:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:13:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:13:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:13:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:13:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:13:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:13:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:13:59,444 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:13:59,444 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:13:59,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:59 BoogieIcfgContainer [2020-10-14 21:13:59,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:13:59,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:13:59,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:13:59,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:13:59,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:13:50" (1/3) ... [2020-10-14 21:13:59,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2848ef5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:59, skipping insertion in model container [2020-10-14 21:13:59,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:53" (2/3) ... [2020-10-14 21:13:59,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2848ef5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:59, skipping insertion in model container [2020-10-14 21:13:59,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:59" (3/3) ... [2020-10-14 21:13:59,473 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label32.c [2020-10-14 21:13:59,484 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:13:59,495 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:13:59,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:13:59,547 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:13:59,548 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:13:59,548 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:13:59,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:13:59,548 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:13:59,548 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:13:59,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:13:59,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:13:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:13:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 21:13:59,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:59,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:13:59,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:59,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:59,608 INFO L82 PathProgramCache]: Analyzing trace with hash 234588538, now seen corresponding path program 1 times [2020-10-14 21:13:59,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:59,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225892437] [2020-10-14 21:13:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:00,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:00,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 21:14:00,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-14 21:14:00,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:00,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 21:14:00,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:14:00,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:00,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:00,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:00,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:00,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:14:00,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:00,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:00,438 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 21:14:00,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225892437] [2020-10-14 21:14:00,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:00,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:14:00,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986611720] [2020-10-14 21:14:00,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:14:00,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:00,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:14:00,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:14:00,465 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:14:10,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:10,606 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-14 21:14:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:14:10,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-14 21:14:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:10,643 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:14:10,644 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:14:10,658 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 21:14:10,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:14:10,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-14 21:14:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-14 21:14:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-14 21:14:10,850 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 49 [2020-10-14 21:14:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:10,851 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-14 21:14:10,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:14:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-14 21:14:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 21:14:10,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:10,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:14:10,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:14:10,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:10,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:10,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1283279725, now seen corresponding path program 1 times [2020-10-14 21:14:10,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:10,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841096183] [2020-10-14 21:14:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:10,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:11,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:11,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 21:14:11,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:14:11,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-10-14 21:14:11,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:11,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:14:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:11,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 21:14:11,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:14:11,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:11,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:11,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:11,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:11,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:14:11,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:11,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:11,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:11,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:11,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:11,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:12,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:12,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:14:12,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 21:14:12,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:12,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:14:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:14:12,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841096183] [2020-10-14 21:14:12,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:12,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:14:12,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086024505] [2020-10-14 21:14:12,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:14:12,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:12,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:14:12,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:14:12,168 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 6 states. [2020-10-14 21:14:23,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:23,179 INFO L93 Difference]: Finished difference Result 4689 states and 7282 transitions. [2020-10-14 21:14:23,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:14:23,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-10-14 21:14:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:23,201 INFO L225 Difference]: With dead ends: 4689 [2020-10-14 21:14:23,201 INFO L226 Difference]: Without dead ends: 3140 [2020-10-14 21:14:23,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:14:23,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2020-10-14 21:14:23,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3127. [2020-10-14 21:14:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2020-10-14 21:14:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4276 transitions. [2020-10-14 21:14:23,306 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4276 transitions. Word has length 124 [2020-10-14 21:14:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:23,307 INFO L479 AbstractCegarLoop]: Abstraction has 3127 states and 4276 transitions. [2020-10-14 21:14:23,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:14:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4276 transitions. [2020-10-14 21:14:23,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 21:14:23,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:23,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:14:23,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:14:23,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:23,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:23,312 INFO L82 PathProgramCache]: Analyzing trace with hash -2095384129, now seen corresponding path program 1 times [2020-10-14 21:14:23,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:23,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448892990] [2020-10-14 21:14:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:23,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:24,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:24,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 21:14:24,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-14 21:14:24,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:24,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:14:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:24,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:24,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:24,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:24,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:24,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:24,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:14:24,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:24,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:24,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:24,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:24,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:24,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:24,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 21:14:24,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:24,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:14:24,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:24,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 21:14:24,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:24,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448892990] [2020-10-14 21:14:24,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:24,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:24,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799987703] [2020-10-14 21:14:24,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:24,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:24,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:24,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:24,789 INFO L87 Difference]: Start difference. First operand 3127 states and 4276 transitions. Second operand 7 states. [2020-10-14 21:14:36,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:36,823 INFO L93 Difference]: Finished difference Result 9481 states and 13037 transitions. [2020-10-14 21:14:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:14:36,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-14 21:14:36,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:36,856 INFO L225 Difference]: With dead ends: 9481 [2020-10-14 21:14:36,856 INFO L226 Difference]: Without dead ends: 6360 [2020-10-14 21:14:36,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 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 21:14:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2020-10-14 21:14:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 6306. [2020-10-14 21:14:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6306 states. [2020-10-14 21:14:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6306 states to 6306 states and 8033 transitions. [2020-10-14 21:14:37,021 INFO L78 Accepts]: Start accepts. Automaton has 6306 states and 8033 transitions. Word has length 130 [2020-10-14 21:14:37,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:37,022 INFO L479 AbstractCegarLoop]: Abstraction has 6306 states and 8033 transitions. [2020-10-14 21:14:37,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6306 states and 8033 transitions. [2020-10-14 21:14:37,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 21:14:37,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:37,036 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:14:37,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:14:37,037 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:37,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:37,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1993831038, now seen corresponding path program 1 times [2020-10-14 21:14:37,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:37,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440840253] [2020-10-14 21:14:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:37,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:37,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:38,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:38,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 21:14:38,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:38,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1705 [2020-10-14 21:14:38,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:38,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:14:38,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:38,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:38,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:38,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:38,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:38,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:38,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:14:38,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:38,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:39,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:39,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:39,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:39,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:14:39,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 21:14:39,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:39,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:14:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:39,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440840253] [2020-10-14 21:14:39,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:39,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:14:39,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058649907] [2020-10-14 21:14:39,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:14:39,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:39,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:14:39,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:14:39,749 INFO L87 Difference]: Start difference. First operand 6306 states and 8033 transitions. Second operand 8 states. [2020-10-14 21:15:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:02,357 INFO L93 Difference]: Finished difference Result 15219 states and 20961 transitions. [2020-10-14 21:15:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:15:02,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-10-14 21:15:02,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:02,401 INFO L225 Difference]: With dead ends: 15219 [2020-10-14 21:15:02,401 INFO L226 Difference]: Without dead ends: 9686 [2020-10-14 21:15:02,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:15:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9686 states. [2020-10-14 21:15:02,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9686 to 7967. [2020-10-14 21:15:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7967 states. [2020-10-14 21:15:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7967 states to 7967 states and 9725 transitions. [2020-10-14 21:15:02,607 INFO L78 Accepts]: Start accepts. Automaton has 7967 states and 9725 transitions. Word has length 197 [2020-10-14 21:15:02,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:02,608 INFO L479 AbstractCegarLoop]: Abstraction has 7967 states and 9725 transitions. [2020-10-14 21:15:02,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:15:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand 7967 states and 9725 transitions. [2020-10-14 21:15:02,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 21:15:02,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:02,612 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:02,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:15:02,613 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:02,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:02,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1907121490, now seen corresponding path program 1 times [2020-10-14 21:15:02,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:02,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589828007] [2020-10-14 21:15:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:02,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:03,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:03,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 21:15:04,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:15:04,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1542 [2020-10-14 21:15:04,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:15:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:15:04,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:04,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:04,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:15:04,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:15:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 21:15:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:15:04,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:15:04,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:15:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:15:04,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 21:15:04,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:15:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:15:04,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589828007] [2020-10-14 21:15:04,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:04,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:15:04,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645223672] [2020-10-14 21:15:04,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:15:04,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:04,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:15:04,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:15:04,825 INFO L87 Difference]: Start difference. First operand 7967 states and 9725 transitions. Second operand 6 states. [2020-10-14 21:15:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:25,473 INFO L93 Difference]: Finished difference Result 21520 states and 28211 transitions. [2020-10-14 21:15:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:15:25,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 269 [2020-10-14 21:15:25,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:25,533 INFO L225 Difference]: With dead ends: 21520 [2020-10-14 21:15:25,533 INFO L226 Difference]: Without dead ends: 14326 [2020-10-14 21:15:25,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 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 21:15:25,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14326 states. [2020-10-14 21:15:25,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14326 to 14275. [2020-10-14 21:15:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14275 states. [2020-10-14 21:15:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14275 states to 14275 states and 17699 transitions. [2020-10-14 21:15:25,858 INFO L78 Accepts]: Start accepts. Automaton has 14275 states and 17699 transitions. Word has length 269 [2020-10-14 21:15:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:25,859 INFO L479 AbstractCegarLoop]: Abstraction has 14275 states and 17699 transitions. [2020-10-14 21:15:25,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:15:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states and 17699 transitions. [2020-10-14 21:15:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-14 21:15:25,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:25,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:25,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:15:25,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:25,866 INFO L82 PathProgramCache]: Analyzing trace with hash -970711454, now seen corresponding path program 1 times [2020-10-14 21:15:25,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:25,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411195824] [2020-10-14 21:15:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:25,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:26,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:26,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 21:15:26,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-14 21:15:26,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:26,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:15:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:15:26,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:26,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:26,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:26,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:26,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:26,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:26,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:15:26,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:26,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:26,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:26,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:26,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:27,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:27,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:27,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:15:27,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 21:15:27,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:27,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:15:27,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:15:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:27,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:27,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:27,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:15:27,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 21:15:27,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:27,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:15:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:15:27,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411195824] [2020-10-14 21:15:27,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:27,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:27,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251160834] [2020-10-14 21:15:27,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:27,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:27,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:27,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:27,640 INFO L87 Difference]: Start difference. First operand 14275 states and 17699 transitions. Second operand 7 states. [2020-10-14 21:15:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:49,251 INFO L93 Difference]: Finished difference Result 31557 states and 41050 transitions. [2020-10-14 21:15:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:15:49,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-14 21:15:49,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:49,312 INFO L225 Difference]: With dead ends: 31557 [2020-10-14 21:15:49,313 INFO L226 Difference]: Without dead ends: 18055 [2020-10-14 21:15:49,348 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 21:15:49,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18055 states. [2020-10-14 21:15:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18055 to 17838. [2020-10-14 21:15:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17838 states. [2020-10-14 21:15:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17838 states to 17838 states and 22272 transitions. [2020-10-14 21:15:49,854 INFO L78 Accepts]: Start accepts. Automaton has 17838 states and 22272 transitions. Word has length 287 [2020-10-14 21:15:49,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:49,855 INFO L479 AbstractCegarLoop]: Abstraction has 17838 states and 22272 transitions. [2020-10-14 21:15:49,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 17838 states and 22272 transitions. [2020-10-14 21:15:49,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-14 21:15:49,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:49,862 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-14 21:15:49,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:15:49,863 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:49,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:49,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2097591974, now seen corresponding path program 1 times [2020-10-14 21:15:49,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:49,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182776160] [2020-10-14 21:15:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:49,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:50,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:50,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 21:15:50,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:50,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-14 21:15:50,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:50,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-14 21:15:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 21:15:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:50,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:50,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:50,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:50,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:50,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:15:50,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:50,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:50,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:50,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:50,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:50,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:50,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:50,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:50,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:15:50,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:50,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:15:50,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:50,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:50,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:50,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:15:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:50,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:50,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:50,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 21:15:50,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 21:15:50,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:50,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:50,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:50,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:50,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:15:50,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 21:15:51,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182776160] [2020-10-14 21:15:51,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:51,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:15:51,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019422837] [2020-10-14 21:15:51,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:15:51,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:51,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:15:51,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:15:51,122 INFO L87 Difference]: Start difference. First operand 17838 states and 22272 transitions. Second operand 5 states. [2020-10-14 21:16:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:11,287 INFO L93 Difference]: Finished difference Result 40567 states and 53431 transitions. [2020-10-14 21:16:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:16:11,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-14 21:16:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:11,381 INFO L225 Difference]: With dead ends: 40567 [2020-10-14 21:16:11,382 INFO L226 Difference]: Without dead ends: 23502 [2020-10-14 21:16:11,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:16:11,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23502 states. [2020-10-14 21:16:11,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23502 to 23418. [2020-10-14 21:16:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23418 states. [2020-10-14 21:16:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23418 states to 23418 states and 30733 transitions. [2020-10-14 21:16:11,917 INFO L78 Accepts]: Start accepts. Automaton has 23418 states and 30733 transitions. Word has length 315 [2020-10-14 21:16:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:11,918 INFO L479 AbstractCegarLoop]: Abstraction has 23418 states and 30733 transitions. [2020-10-14 21:16:11,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:16:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 23418 states and 30733 transitions. [2020-10-14 21:16:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-14 21:16:11,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:11,928 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:16:11,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:16:11,929 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:11,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:11,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1803197109, now seen corresponding path program 1 times [2020-10-14 21:16:11,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:11,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391917583] [2020-10-14 21:16:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:12,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:14,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:15,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:17,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:17,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-14 21:16:17,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:16:17,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 21:16:17,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:17,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:16:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-14 21:16:17,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:17,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:17,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:17,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:17,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:17,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:16:17,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:17,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:17,260 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-14 21:16:17,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:17,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:17,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:17,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:16:17,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:16:17,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:17,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:16:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:16:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:17,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:17,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:17,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:17,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:16:17,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:17,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 21:16:17,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:17,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:16:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:17,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-14 21:16:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:17,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:17,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:17,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:16:17,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:17,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 21:16:17,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:17,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:17,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:17,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:16:17,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 308 proven. 4 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 21:16:18,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391917583] [2020-10-14 21:16:18,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:18,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:16:18,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125056407] [2020-10-14 21:16:18,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:18,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:18,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:18,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:18,153 INFO L87 Difference]: Start difference. First operand 23418 states and 30733 transitions. Second operand 7 states. [2020-10-14 21:16:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:47,736 INFO L93 Difference]: Finished difference Result 51806 states and 70227 transitions. [2020-10-14 21:16:47,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:16:47,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 382 [2020-10-14 21:16:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:47,824 INFO L225 Difference]: With dead ends: 51806 [2020-10-14 21:16:47,825 INFO L226 Difference]: Without dead ends: 29161 [2020-10-14 21:16:47,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:16:47,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29161 states. [2020-10-14 21:16:48,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29161 to 28246. [2020-10-14 21:16:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28246 states. [2020-10-14 21:16:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28246 states to 28246 states and 38266 transitions. [2020-10-14 21:16:48,456 INFO L78 Accepts]: Start accepts. Automaton has 28246 states and 38266 transitions. Word has length 382 [2020-10-14 21:16:48,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:48,457 INFO L479 AbstractCegarLoop]: Abstraction has 28246 states and 38266 transitions. [2020-10-14 21:16:48,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 28246 states and 38266 transitions. [2020-10-14 21:16:48,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-14 21:16:48,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:48,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:16:48,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:16:48,469 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:48,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:48,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1807100849, now seen corresponding path program 1 times [2020-10-14 21:16:48,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:48,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284740375] [2020-10-14 21:16:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:48,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:48,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:53,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:53,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-14 21:16:53,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:16:53,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 21:16:53,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:53,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:16:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:16:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 349 [2020-10-14 21:16:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:53,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:53,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:53,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:53,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:53,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:16:53,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:53,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:16:53,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:53,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:54,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:54,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:16:54,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 21:16:54,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:54,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:54,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:16:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:16:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:16:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:54,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:54,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:54,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:54,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 21:16:54,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 21:16:54,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:54,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:16:54,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:54,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-14 21:16:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:54,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:54,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:54,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:16:54,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:54,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 21:16:54,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:54,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:54,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:54,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:16:54,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 260 proven. 4 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-14 21:16:54,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284740375] [2020-10-14 21:16:54,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:54,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:16:54,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091810592] [2020-10-14 21:16:54,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:54,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:54,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:54,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:54,931 INFO L87 Difference]: Start difference. First operand 28246 states and 38266 transitions. Second operand 7 states. [2020-10-14 21:17:23,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:23,686 INFO L93 Difference]: Finished difference Result 78620 states and 111628 transitions. [2020-10-14 21:17:23,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:17:23,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-14 21:17:23,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:23,870 INFO L225 Difference]: With dead ends: 78620 [2020-10-14 21:17:23,870 INFO L226 Difference]: Without dead ends: 51147 [2020-10-14 21:17:23,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:17:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51147 states. [2020-10-14 21:17:25,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51147 to 48575. [2020-10-14 21:17:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48575 states. [2020-10-14 21:17:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48575 states to 48575 states and 64655 transitions. [2020-10-14 21:17:25,256 INFO L78 Accepts]: Start accepts. Automaton has 48575 states and 64655 transitions. Word has length 388 [2020-10-14 21:17:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:25,257 INFO L479 AbstractCegarLoop]: Abstraction has 48575 states and 64655 transitions. [2020-10-14 21:17:25,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:17:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 48575 states and 64655 transitions. [2020-10-14 21:17:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-14 21:17:25,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:25,277 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:17:25,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:17:25,279 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:25,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:25,280 INFO L82 PathProgramCache]: Analyzing trace with hash -278071801, now seen corresponding path program 1 times [2020-10-14 21:17:25,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:25,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183741424] [2020-10-14 21:17:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:30,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:30,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-14 21:17:30,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:30,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 21:17:30,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:30,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:17:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:17:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 21:17:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:30,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:30,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:30,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:30,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:17:30,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:30,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:30,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:30,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:30,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:17:30,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 21:17:30,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:30,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:17:30,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:30,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:17:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:31,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:31,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:17:31,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:31,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 21:17:31,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:31,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:31,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:17:31,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:31,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:17:31,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:31,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 21:17:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:31,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:31,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:17:31,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:31,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 21:17:31,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:31,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:17:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 318 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 21:17:31,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183741424] [2020-10-14 21:17:31,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:31,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:17:31,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428033324] [2020-10-14 21:17:31,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:17:31,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:31,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:17:31,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:17:31,596 INFO L87 Difference]: Start difference. First operand 48575 states and 64655 transitions. Second operand 9 states.