/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/Problem13_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:25:01,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:25:01,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:25:02,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:25:02,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:25:02,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:25:02,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:25:02,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:25:02,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:25:02,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:25:02,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:25:02,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:25:02,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:25:02,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:25:02,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:25:02,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:25:02,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:25:02,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:25:02,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:25:02,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:25:02,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:25:02,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:25:02,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:25:02,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:25:02,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:25:02,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:25:02,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:25:02,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:25:02,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:25:02,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:25:02,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:25:02,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:25:02,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:25:02,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:25:02,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:25:02,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:25:02,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:25:02,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:25:02,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:25:02,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:25:02,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:25:02,143 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 21:25:02,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:25:02,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:25:02,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:25:02,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:25:02,186 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:25:02,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:25:02,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:25:02,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:25:02,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:25:02,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:25:02,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:25:02,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:25:02,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:25:02,188 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:25:02,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:25:02,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:25:02,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:25:02,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:25:02,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:25:02,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:25:02,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:25:02,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:25:02,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:25:02,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:25:02,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:25:02,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:25:02,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:25:02,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:25:02,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:25:02,191 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 21:25:02,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:25:02,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:25:02,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:25:02,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:25:02,592 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:25:02,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13.c [2020-10-14 21:25:02,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b77ff19/4b8c4f63679241fd8478c7ea6f5486d1/FLAG50473f33b [2020-10-14 21:25:03,667 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:25:03,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label13.c [2020-10-14 21:25:03,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b77ff19/4b8c4f63679241fd8478c7ea6f5486d1/FLAG50473f33b [2020-10-14 21:25:04,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b77ff19/4b8c4f63679241fd8478c7ea6f5486d1 [2020-10-14 21:25:04,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:25:04,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:25:04,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:25:04,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:25:04,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:25:04,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:25:04" (1/1) ... [2020-10-14 21:25:04,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1613be08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:04, skipping insertion in model container [2020-10-14 21:25:04,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:25:04" (1/1) ... [2020-10-14 21:25:04,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:25:04,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:25:06,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:25:06,359 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:25:07,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:25:07,329 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:25:07,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:07 WrapperNode [2020-10-14 21:25:07,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:25:07,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:25:07,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:25:07,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:25:07,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:07" (1/1) ... [2020-10-14 21:25:07,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:07" (1/1) ... [2020-10-14 21:25:07,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:07" (1/1) ... [2020-10-14 21:25:07,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:07" (1/1) ... [2020-10-14 21:25:07,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:07" (1/1) ... [2020-10-14 21:25:07,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:07" (1/1) ... [2020-10-14 21:25:07,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:07" (1/1) ... [2020-10-14 21:25:07,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:25:07,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:25:07,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:25:07,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:25:07,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:25:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:25:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:25:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:25:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:25:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:25:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:25:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:25:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:25:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:25:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:25:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:25:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:25:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:25:07,951 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:25:07,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:25:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:25:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:25:20,649 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:25:20,649 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:25:20,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:25:20 BoogieIcfgContainer [2020-10-14 21:25:20,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:25:20,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:25:20,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:25:20,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:25:20,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:25:04" (1/3) ... [2020-10-14 21:25:20,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695363ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:25:20, skipping insertion in model container [2020-10-14 21:25:20,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:07" (2/3) ... [2020-10-14 21:25:20,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695363ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:25:20, skipping insertion in model container [2020-10-14 21:25:20,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:25:20" (3/3) ... [2020-10-14 21:25:20,679 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label13.c [2020-10-14 21:25:20,694 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:25:20,707 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:25:20,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:25:20,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:25:20,768 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:25:20,768 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:25:20,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:25:20,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:25:20,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:25:20,769 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:25:20,769 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:25:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:25:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 21:25:20,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:25:20,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:25:20,835 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:25:20,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:25:20,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1383037944, now seen corresponding path program 1 times [2020-10-14 21:25:20,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:25:20,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845798511] [2020-10-14 21:25:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:25:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:21,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:21,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:21,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:25:21,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:21,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-14 21:25:21,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:21,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:25:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:25:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 21:25:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:25:21,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:25:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:21,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:21,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:21,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:25:21,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 21:25:21,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:21,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:25:21,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:21,918 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 21:25:21,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845798511] [2020-10-14 21:25:21,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:25:21,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:25:21,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400969886] [2020-10-14 21:25:21,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:25:21,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:25:21,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:25:21,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:25:21,962 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:25:40,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:25:40,518 INFO L93 Difference]: Finished difference Result 3204 states and 5913 transitions. [2020-10-14 21:25:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:25:40,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 21:25:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:25:40,567 INFO L225 Difference]: With dead ends: 3204 [2020-10-14 21:25:40,567 INFO L226 Difference]: Without dead ends: 2006 [2020-10-14 21:25:40,584 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 21:25:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2020-10-14 21:25:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1920. [2020-10-14 21:25:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-14 21:25:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3311 transitions. [2020-10-14 21:25:40,832 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3311 transitions. Word has length 63 [2020-10-14 21:25:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:25:40,833 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3311 transitions. [2020-10-14 21:25:40,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:25:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3311 transitions. [2020-10-14 21:25:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 21:25:40,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:25:40,842 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:25:40,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:25:40,844 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:25:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:25:40,845 INFO L82 PathProgramCache]: Analyzing trace with hash 141627569, now seen corresponding path program 1 times [2020-10-14 21:25:40,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:25:40,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681576453] [2020-10-14 21:25:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:25:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:41,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:42,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:43,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:43,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 21:25:43,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:25:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2115 [2020-10-14 21:25:43,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:43,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:25:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 21:25:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 21:25:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:25:43,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:25:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:43,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:43,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:25:43,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:25:43,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:43,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:25:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:25:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:43,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:25:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:43,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:43,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:43,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:25:43,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 21:25:43,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:43,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:43,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:25:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:25:43,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681576453] [2020-10-14 21:25:43,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:25:43,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:25:43,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612848295] [2020-10-14 21:25:43,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:25:43,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:25:43,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:25:43,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:25:43,454 INFO L87 Difference]: Start difference. First operand 1920 states and 3311 transitions. Second operand 5 states. [2020-10-14 21:26:02,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:02,226 INFO L93 Difference]: Finished difference Result 5543 states and 9678 transitions. [2020-10-14 21:26:02,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:26:02,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-14 21:26:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:02,252 INFO L225 Difference]: With dead ends: 5543 [2020-10-14 21:26:02,253 INFO L226 Difference]: Without dead ends: 3629 [2020-10-14 21:26:02,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:26:02,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2020-10-14 21:26:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3603. [2020-10-14 21:26:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3603 states. [2020-10-14 21:26:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 5379 transitions. [2020-10-14 21:26:02,387 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 5379 transitions. Word has length 132 [2020-10-14 21:26:02,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:02,388 INFO L479 AbstractCegarLoop]: Abstraction has 3603 states and 5379 transitions. [2020-10-14 21:26:02,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:26:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 5379 transitions. [2020-10-14 21:26:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 21:26:02,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:02,392 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, 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] [2020-10-14 21:26:02,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:26:02,393 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:02,393 INFO L82 PathProgramCache]: Analyzing trace with hash -112912263, now seen corresponding path program 1 times [2020-10-14 21:26:02,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:02,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146978954] [2020-10-14 21:26:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:02,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:02,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:03,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:03,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:26:03,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:26:03,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-14 21:26:03,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:03,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:26:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:03,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:03,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:03,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:03,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:03,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:26:03,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:03,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:03,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:03,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:03,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:03,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:26:03,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 21:26:03,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:03,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:26:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:26:03,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:26:03,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146978954] [2020-10-14 21:26:03,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:03,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:26:03,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23906148] [2020-10-14 21:26:03,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:26:03,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:03,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:26:03,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:03,882 INFO L87 Difference]: Start difference. First operand 3603 states and 5379 transitions. Second operand 7 states. [2020-10-14 21:26:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:22,668 INFO L93 Difference]: Finished difference Result 10809 states and 16441 transitions. [2020-10-14 21:26:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:26:22,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-14 21:26:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:22,715 INFO L225 Difference]: With dead ends: 10809 [2020-10-14 21:26:22,715 INFO L226 Difference]: Without dead ends: 7212 [2020-10-14 21:26:22,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:26:22,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7212 states. [2020-10-14 21:26:22,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7212 to 7139. [2020-10-14 21:26:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7139 states. [2020-10-14 21:26:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7139 states to 7139 states and 9956 transitions. [2020-10-14 21:26:22,955 INFO L78 Accepts]: Start accepts. Automaton has 7139 states and 9956 transitions. Word has length 136 [2020-10-14 21:26:22,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:22,956 INFO L479 AbstractCegarLoop]: Abstraction has 7139 states and 9956 transitions. [2020-10-14 21:26:22,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:26:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 7139 states and 9956 transitions. [2020-10-14 21:26:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 21:26:22,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:22,969 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:26:22,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:26:22,969 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:22,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:22,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1800974653, now seen corresponding path program 1 times [2020-10-14 21:26:22,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:22,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912583947] [2020-10-14 21:26:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:23,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:25,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:25,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:26:25,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:26:25,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2160 [2020-10-14 21:26:25,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:25,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:26:25,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:25,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:25,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:25,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:25,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:26:25,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:25,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:25,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:25,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:26:25,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 21:26:25,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:25,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:25,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:26:25,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:26:25,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:26:25,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912583947] [2020-10-14 21:26:25,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:25,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:26:25,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888618508] [2020-10-14 21:26:25,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:26:25,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:25,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:26:25,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:25,710 INFO L87 Difference]: Start difference. First operand 7139 states and 9956 transitions. Second operand 7 states. [2020-10-14 21:26:54,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:54,279 INFO L93 Difference]: Finished difference Result 21490 states and 32552 transitions. [2020-10-14 21:26:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:26:54,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-14 21:26:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:54,363 INFO L225 Difference]: With dead ends: 21490 [2020-10-14 21:26:54,364 INFO L226 Difference]: Without dead ends: 14357 [2020-10-14 21:26:54,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:26:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14357 states. [2020-10-14 21:26:54,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14357 to 14101. [2020-10-14 21:26:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14101 states. [2020-10-14 21:26:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14101 states to 14101 states and 19063 transitions. [2020-10-14 21:26:54,962 INFO L78 Accepts]: Start accepts. Automaton has 14101 states and 19063 transitions. Word has length 138 [2020-10-14 21:26:54,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:54,964 INFO L479 AbstractCegarLoop]: Abstraction has 14101 states and 19063 transitions. [2020-10-14 21:26:54,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:26:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14101 states and 19063 transitions. [2020-10-14 21:26:54,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 21:26:54,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:54,969 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:26:54,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:26:54,970 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:54,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1905388931, now seen corresponding path program 1 times [2020-10-14 21:26:54,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:54,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293889739] [2020-10-14 21:26:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:55,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:55,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:55,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 21:26:55,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:26:55,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-10-14 21:26:55,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:55,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:26:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:26:56,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:56,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:56,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:56,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:56,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:56,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:26:56,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:56,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:56,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:56,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:56,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:56,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:26:56,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 21:26:56,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:56,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:26:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:26:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:26:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:26:56,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293889739] [2020-10-14 21:26:56,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:56,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:26:56,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237777505] [2020-10-14 21:26:56,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:26:56,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:56,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:26:56,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:56,400 INFO L87 Difference]: Start difference. First operand 14101 states and 19063 transitions. Second operand 7 states. [2020-10-14 21:27:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:18,349 INFO L93 Difference]: Finished difference Result 36036 states and 52712 transitions. [2020-10-14 21:27:18,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:27:18,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-14 21:27:18,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:18,466 INFO L225 Difference]: With dead ends: 36036 [2020-10-14 21:27:18,466 INFO L226 Difference]: Without dead ends: 21941 [2020-10-14 21:27:18,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:27:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21941 states. [2020-10-14 21:27:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21941 to 21630. [2020-10-14 21:27:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21630 states. [2020-10-14 21:27:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21630 states to 21630 states and 29267 transitions. [2020-10-14 21:27:19,187 INFO L78 Accepts]: Start accepts. Automaton has 21630 states and 29267 transitions. Word has length 170 [2020-10-14 21:27:19,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:19,188 INFO L479 AbstractCegarLoop]: Abstraction has 21630 states and 29267 transitions. [2020-10-14 21:27:19,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 21630 states and 29267 transitions. [2020-10-14 21:27:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 21:27:19,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:19,192 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, 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] [2020-10-14 21:27:19,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:27:19,193 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:19,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:19,193 INFO L82 PathProgramCache]: Analyzing trace with hash -974234694, now seen corresponding path program 1 times [2020-10-14 21:27:19,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:19,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339422135] [2020-10-14 21:27:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:19,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:20,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:22,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:22,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 21:27:22,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:27:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2771 [2020-10-14 21:27:22,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:22,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:27:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 21:27:22,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:22,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:22,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:22,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:22,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:22,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:27:22,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:22,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:22,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:22,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:22,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:22,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 21:27:22,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:27:22,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-14 21:27:22,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:22,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:22,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:27:22,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:27:22,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339422135] [2020-10-14 21:27:22,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:27:22,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:27:22,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854877906] [2020-10-14 21:27:22,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:22,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:22,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:22,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:22,867 INFO L87 Difference]: Start difference. First operand 21630 states and 29267 transitions. Second operand 7 states. [2020-10-14 21:27:49,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:49,956 INFO L93 Difference]: Finished difference Result 62314 states and 88153 transitions. [2020-10-14 21:27:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:27:49,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-10-14 21:27:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:50,146 INFO L225 Difference]: With dead ends: 62314 [2020-10-14 21:27:50,146 INFO L226 Difference]: Without dead ends: 40690 [2020-10-14 21:27:50,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:27:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40690 states. [2020-10-14 21:27:51,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40690 to 40549. [2020-10-14 21:27:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40549 states. [2020-10-14 21:27:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40549 states to 40549 states and 55409 transitions. [2020-10-14 21:27:51,422 INFO L78 Accepts]: Start accepts. Automaton has 40549 states and 55409 transitions. Word has length 181 [2020-10-14 21:27:51,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:51,423 INFO L479 AbstractCegarLoop]: Abstraction has 40549 states and 55409 transitions. [2020-10-14 21:27:51,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:51,423 INFO L276 IsEmpty]: Start isEmpty. Operand 40549 states and 55409 transitions. [2020-10-14 21:27:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 21:27:51,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:51,435 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, 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] [2020-10-14 21:27:51,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:27:51,436 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:51,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1671452684, now seen corresponding path program 1 times [2020-10-14 21:27:51,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:51,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767563059] [2020-10-14 21:27:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:51,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:51,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:52,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:54,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:56,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:56,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 21:27:56,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:27:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 21:27:56,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:56,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:27:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:27:56,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:56,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:56,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:56,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:56,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:27:56,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:56,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:57,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:57,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:27:57,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:57,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-14 21:27:57,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:57,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:27:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:57,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-14 21:27:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:57,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:57,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:57,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:27:57,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:57,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 21:27:57,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:57,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:27:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 21:27:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:27:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 112 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:27:57,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767563059] [2020-10-14 21:27:57,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:27:57,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:27:57,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474246739] [2020-10-14 21:27:57,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:57,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:57,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:57,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:57,746 INFO L87 Difference]: Start difference. First operand 40549 states and 55409 transitions. Second operand 7 states. [2020-10-14 21:28:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:26,928 INFO L93 Difference]: Finished difference Result 74075 states and 103940 transitions. [2020-10-14 21:28:26,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:28:26,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-14 21:28:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:27,136 INFO L225 Difference]: With dead ends: 74075 [2020-10-14 21:28:27,136 INFO L226 Difference]: Without dead ends: 41735 [2020-10-14 21:28:27,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:28:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41735 states. [2020-10-14 21:28:28,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41735 to 41138. [2020-10-14 21:28:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41138 states. [2020-10-14 21:28:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41138 states to 41138 states and 56518 transitions. [2020-10-14 21:28:28,204 INFO L78 Accepts]: Start accepts. Automaton has 41138 states and 56518 transitions. Word has length 272 [2020-10-14 21:28:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:28:28,205 INFO L479 AbstractCegarLoop]: Abstraction has 41138 states and 56518 transitions. [2020-10-14 21:28:28,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:28:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 41138 states and 56518 transitions. [2020-10-14 21:28:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-14 21:28:28,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:28,217 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, 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] [2020-10-14 21:28:28,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:28:28,217 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:28,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:28,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1315230189, now seen corresponding path program 1 times [2020-10-14 21:28:28,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:28,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702632261] [2020-10-14 21:28:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:28,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:31,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:31,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:31,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-14 21:28:31,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:28:31,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3298 [2020-10-14 21:28:31,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:31,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:28:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 21:28:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 21:28:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:28:32,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:32,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:32,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:32,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:28:32,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:32,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:28:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:28:32,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:32,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:28:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:32,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:32,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:28:32,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:28:32,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:32,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:32,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:32,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:32,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:28:32,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:28:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:32,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:32,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:33,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:33,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:28:33,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:28:33,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-14 21:28:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:33,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:28:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:28:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 151 proven. 56 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:28:33,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702632261] [2020-10-14 21:28:33,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:28:33,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:28:33,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548509536] [2020-10-14 21:28:33,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:28:33,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:33,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:28:33,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:28:33,422 INFO L87 Difference]: Start difference. First operand 41138 states and 56518 transitions. Second operand 7 states.