/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:19:09,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:19:09,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:19:09,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:19:09,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:19:09,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:19:09,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:19:09,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:19:09,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:19:09,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:19:09,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:19:09,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:19:09,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:19:09,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:19:09,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:19:09,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:19:09,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:19:09,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:19:09,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:19:09,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:19:09,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:19:09,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:19:09,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:19:09,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:19:09,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:19:09,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:19:09,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:19:09,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:19:09,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:19:09,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:19:09,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:19:09,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:19:09,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:19:09,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:19:09,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:19:09,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:19:09,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:19:09,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:19:09,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:19:09,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:19:09,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:19:09,907 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 [2020-10-28 12:19:09,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:19:09,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:19:09,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:19:09,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:19:09,972 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:19:09,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:19:09,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:19:09,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:19:09,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:19:09,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:19:09,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:19:09,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:19:09,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:19:09,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:19:09,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:19:09,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:19:09,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:19:09,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:19:09,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:19:09,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:19:09,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:19:09,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:19:09,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:19:09,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:19:09,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:19:09,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:19:09,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:19:09,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:19:09,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:19:09,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:19:10,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:19:10,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:19:10,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:19:10,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:19:10,472 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:19:10,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27.c [2020-10-28 12:19:10,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cd5efccd/cd05138e032d4fd6b99820dca522f805/FLAG344febcc7 [2020-10-28 12:19:11,723 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:19:11,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label27.c [2020-10-28 12:19:11,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cd5efccd/cd05138e032d4fd6b99820dca522f805/FLAG344febcc7 [2020-10-28 12:19:12,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cd5efccd/cd05138e032d4fd6b99820dca522f805 [2020-10-28 12:19:12,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:19:12,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:19:12,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:19:12,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:19:12,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:19:12,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:19:12" (1/1) ... [2020-10-28 12:19:12,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5540fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:12, skipping insertion in model container [2020-10-28 12:19:12,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:19:12" (1/1) ... [2020-10-28 12:19:12,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:19:12,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:19:14,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:19:14,198 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:19:15,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:19:15,156 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:19:15,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:15 WrapperNode [2020-10-28 12:19:15,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:19:15,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:19:15,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:19:15,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:19:15,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:15" (1/1) ... [2020-10-28 12:19:15,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:15" (1/1) ... [2020-10-28 12:19:15,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:15" (1/1) ... [2020-10-28 12:19:15,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:15" (1/1) ... [2020-10-28 12:19:15,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:15" (1/1) ... [2020-10-28 12:19:15,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:15" (1/1) ... [2020-10-28 12:19:15,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:15" (1/1) ... [2020-10-28 12:19:15,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:19:15,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:19:15,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:19:15,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:19:15,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:15" (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 [2020-10-28 12:19:15,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:19:15,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:19:15,679 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:19:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:19:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:19:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:19:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:19:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:19:15,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:19:15,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:19:15,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:19:15,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:19:15,681 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:19:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:19:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:19:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:19:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:19:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:19:15,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:19:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:19:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:19:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:19:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:19:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:19:15,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:19:21,718 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:19:21,718 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:19:21,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:19:21 BoogieIcfgContainer [2020-10-28 12:19:21,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:19:21,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:19:21,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:19:21,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:19:21,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:19:12" (1/3) ... [2020-10-28 12:19:21,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398acd6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:19:21, skipping insertion in model container [2020-10-28 12:19:21,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:15" (2/3) ... [2020-10-28 12:19:21,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398acd6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:19:21, skipping insertion in model container [2020-10-28 12:19:21,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:19:21" (3/3) ... [2020-10-28 12:19:21,749 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label27.c [2020-10-28 12:19:21,767 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:19:21,774 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:19:21,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:19:21,835 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:19:21,836 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:19:21,836 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:19:21,836 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:19:21,836 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:19:21,836 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:19:21,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:19:21,837 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:19:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:19:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 12:19:21,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:21,899 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] [2020-10-28 12:19:21,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1992184844, now seen corresponding path program 1 times [2020-10-28 12:19:21,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:21,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556487216] [2020-10-28 12:19:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:22,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:22,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:22,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 12:19:22,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-28 12:19:22,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:22,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:19:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 12:19:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:19:23,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:23,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:23,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:23,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:23,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:19:23,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:23,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:23,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:23,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:19:23,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:19:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:19:23,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556487216] [2020-10-28 12:19:23,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:19:23,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:19:23,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317477009] [2020-10-28 12:19:23,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:19:23,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:23,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:19:23,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:19:23,348 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:19:23,516 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:19:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:35,588 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:19:35,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:19:35,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 12:19:35,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:35,642 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:19:35,642 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:19:35,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:19:35,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:19:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:19:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:19:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-28 12:19:35,853 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 38 [2020-10-28 12:19:35,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:35,855 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-28 12:19:35,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:19:35,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-28 12:19:35,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 12:19:35,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:35,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:35,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:19:35,867 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:35,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:35,868 INFO L82 PathProgramCache]: Analyzing trace with hash 77970902, now seen corresponding path program 1 times [2020-10-28 12:19:35,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:35,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770917592] [2020-10-28 12:19:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:36,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:37,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:37,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 12:19:37,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-28 12:19:37,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:37,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:19:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:19:37,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:37,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:37,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:37,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:37,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:19:37,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:37,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:37,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:19:37,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:19:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:37,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:37,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:37,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:19:37,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:37,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:19:37,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:37,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:19:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:19:37,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770917592] [2020-10-28 12:19:37,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:19:37,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:19:37,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655511887] [2020-10-28 12:19:37,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:19:37,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:37,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:19:37,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:19:37,639 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 7 states. [2020-10-28 12:19:53,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:53,396 INFO L93 Difference]: Finished difference Result 4740 states and 8695 transitions. [2020-10-28 12:19:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:19:53,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-28 12:19:53,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:53,435 INFO L225 Difference]: With dead ends: 4740 [2020-10-28 12:19:53,435 INFO L226 Difference]: Without dead ends: 3192 [2020-10-28 12:19:53,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:19:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2020-10-28 12:19:53,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3137. [2020-10-28 12:19:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3137 states. [2020-10-28 12:19:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 4989 transitions. [2020-10-28 12:19:53,622 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 4989 transitions. Word has length 111 [2020-10-28 12:19:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:53,623 INFO L481 AbstractCegarLoop]: Abstraction has 3137 states and 4989 transitions. [2020-10-28 12:19:53,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 4989 transitions. [2020-10-28 12:19:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 12:19:53,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:53,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:53,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:19:53,627 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:53,628 INFO L82 PathProgramCache]: Analyzing trace with hash 726256786, now seen corresponding path program 1 times [2020-10-28 12:19:53,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:53,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157704091] [2020-10-28 12:19:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:53,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:53,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:54,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:54,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 12:19:54,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-10-28 12:19:54,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:54,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:19:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 12:19:54,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:19:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:54,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:54,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:54,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:54,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:54,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:19:54,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:54,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:55,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:55,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:55,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:19:55,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:55,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 12:19:55,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:55,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:55,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:55,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:19:55,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:19:55,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157704091] [2020-10-28 12:19:55,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:55,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:19:55,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361354265] [2020-10-28 12:19:55,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:19:55,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:55,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:19:55,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:19:55,215 INFO L87 Difference]: Start difference. First operand 3137 states and 4989 transitions. Second operand 5 states. [2020-10-28 12:20:09,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:09,894 INFO L93 Difference]: Finished difference Result 7860 states and 13018 transitions. [2020-10-28 12:20:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:20:09,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-28 12:20:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:09,924 INFO L225 Difference]: With dead ends: 7860 [2020-10-28 12:20:09,925 INFO L226 Difference]: Without dead ends: 4729 [2020-10-28 12:20:09,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:20:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2020-10-28 12:20:10,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4717. [2020-10-28 12:20:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4717 states. [2020-10-28 12:20:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 7163 transitions. [2020-10-28 12:20:10,094 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 7163 transitions. Word has length 113 [2020-10-28 12:20:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:10,095 INFO L481 AbstractCegarLoop]: Abstraction has 4717 states and 7163 transitions. [2020-10-28 12:20:10,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:20:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 7163 transitions. [2020-10-28 12:20:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 12:20:10,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:10,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:10,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:20:10,102 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:10,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:10,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1865825980, now seen corresponding path program 1 times [2020-10-28 12:20:10,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:10,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688770037] [2020-10-28 12:20:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:10,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:11,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:11,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 12:20:11,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:20:11,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1512 [2020-10-28 12:20:11,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:11,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:20:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:20:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:20:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:11,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:11,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:11,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:11,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:20:11,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:11,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:20:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:11,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:11,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:12,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:12,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:20:12,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:12,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-28 12:20:12,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:12,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:20:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:20:12,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688770037] [2020-10-28 12:20:12,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:20:12,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:20:12,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208560252] [2020-10-28 12:20:12,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:20:12,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:12,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:20:12,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:20:12,348 INFO L87 Difference]: Start difference. First operand 4717 states and 7163 transitions. Second operand 7 states. [2020-10-28 12:20:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:29,600 INFO L93 Difference]: Finished difference Result 14413 states and 22569 transitions. [2020-10-28 12:20:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:20:29,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-28 12:20:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:29,672 INFO L225 Difference]: With dead ends: 14413 [2020-10-28 12:20:29,672 INFO L226 Difference]: Without dead ends: 9702 [2020-10-28 12:20:29,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:20:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9702 states. [2020-10-28 12:20:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9702 to 9630. [2020-10-28 12:20:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9630 states. [2020-10-28 12:20:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9630 states to 9630 states and 14360 transitions. [2020-10-28 12:20:30,020 INFO L78 Accepts]: Start accepts. Automaton has 9630 states and 14360 transitions. Word has length 146 [2020-10-28 12:20:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:30,023 INFO L481 AbstractCegarLoop]: Abstraction has 9630 states and 14360 transitions. [2020-10-28 12:20:30,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:20:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 9630 states and 14360 transitions. [2020-10-28 12:20:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 12:20:30,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:30,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:30,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:20:30,031 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:30,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:30,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1836775336, now seen corresponding path program 1 times [2020-10-28 12:20:30,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:30,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970610044] [2020-10-28 12:20:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:31,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:31,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:20:31,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:20:31,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1603 [2020-10-28 12:20:31,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:31,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:20:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:20:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 12:20:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:31,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:31,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:31,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:20:31,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:31,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:20:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:31,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:32,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:32,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:20:32,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:32,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 12:20:32,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:32,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:20:32,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:20:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:20:32,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970610044] [2020-10-28 12:20:32,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:20:32,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:20:32,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882613865] [2020-10-28 12:20:32,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:20:32,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:32,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:20:32,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:20:32,391 INFO L87 Difference]: Start difference. First operand 9630 states and 14360 transitions. Second operand 7 states. [2020-10-28 12:20:50,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:50,272 INFO L93 Difference]: Finished difference Result 24554 states and 38256 transitions. [2020-10-28 12:20:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:20:50,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-28 12:20:50,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:50,358 INFO L225 Difference]: With dead ends: 24554 [2020-10-28 12:20:50,358 INFO L226 Difference]: Without dead ends: 14930 [2020-10-28 12:20:50,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:20:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14930 states. [2020-10-28 12:20:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14930 to 14775. [2020-10-28 12:20:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14775 states. [2020-10-28 12:20:50,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14775 states to 14775 states and 21382 transitions. [2020-10-28 12:20:50,810 INFO L78 Accepts]: Start accepts. Automaton has 14775 states and 21382 transitions. Word has length 164 [2020-10-28 12:20:50,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:50,811 INFO L481 AbstractCegarLoop]: Abstraction has 14775 states and 21382 transitions. [2020-10-28 12:20:50,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:20:50,811 INFO L276 IsEmpty]: Start isEmpty. Operand 14775 states and 21382 transitions. [2020-10-28 12:20:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-28 12:20:50,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:50,815 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:20:50,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:20:50,816 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:50,819 INFO L82 PathProgramCache]: Analyzing trace with hash -595894536, now seen corresponding path program 1 times [2020-10-28 12:20:50,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:50,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631806156] [2020-10-28 12:20:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:50,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:52,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:53,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:53,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-28 12:20:53,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:20:53,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2249 [2020-10-28 12:20:53,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:53,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:20:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:20:53,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:53,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:53,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:53,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:53,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:53,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:20:53,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:53,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:53,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:53,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:53,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:20:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 12:20:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:53,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:20:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:53,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:20:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:53,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:53,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:20:53,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:53,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 12:20:53,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:53,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:20:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:20:53,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631806156] [2020-10-28 12:20:53,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:53,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:20:53,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973176965] [2020-10-28 12:20:53,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:20:53,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:53,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:20:53,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:20:53,746 INFO L87 Difference]: Start difference. First operand 14775 states and 21382 transitions. Second operand 8 states. [2020-10-28 12:21:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:17,623 INFO L93 Difference]: Finished difference Result 34350 states and 51127 transitions. [2020-10-28 12:21:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:21:17,626 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2020-10-28 12:21:17,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:17,700 INFO L225 Difference]: With dead ends: 34350 [2020-10-28 12:21:17,700 INFO L226 Difference]: Without dead ends: 19581 [2020-10-28 12:21:17,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:21:17,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19581 states. [2020-10-28 12:21:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19581 to 19519. [2020-10-28 12:21:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19519 states. [2020-10-28 12:21:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19519 states to 19519 states and 25816 transitions. [2020-10-28 12:21:18,312 INFO L78 Accepts]: Start accepts. Automaton has 19519 states and 25816 transitions. Word has length 186 [2020-10-28 12:21:18,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:18,313 INFO L481 AbstractCegarLoop]: Abstraction has 19519 states and 25816 transitions. [2020-10-28 12:21:18,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:21:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 19519 states and 25816 transitions. [2020-10-28 12:21:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-28 12:21:18,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:18,320 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:21:18,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:21:18,320 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:18,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:18,322 INFO L82 PathProgramCache]: Analyzing trace with hash -844807520, now seen corresponding path program 1 times [2020-10-28 12:21:18,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:18,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703710383] [2020-10-28 12:21:18,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:18,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:19,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:22,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-28 12:21:22,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:21:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4168 [2020-10-28 12:21:22,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:22,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:21:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:21:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:22,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:22,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:22,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:21:22,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:22,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:22,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:22,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:22,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 12:21:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 12:21:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:22,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:21:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:22,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 12:21:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:23,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:23,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:21:23,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:23,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:21:23,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:23,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 12:21:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:23,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:23,183 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 60 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:21:23,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703710383] [2020-10-28 12:21:23,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:23,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:21:23,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559997854] [2020-10-28 12:21:23,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:23,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:23,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:23,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:23,187 INFO L87 Difference]: Start difference. First operand 19519 states and 25816 transitions. Second operand 7 states. [2020-10-28 12:21:43,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:43,237 INFO L93 Difference]: Finished difference Result 57204 states and 78899 transitions. [2020-10-28 12:21:43,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:21:43,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-28 12:21:43,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:43,378 INFO L225 Difference]: With dead ends: 57204 [2020-10-28 12:21:43,379 INFO L226 Difference]: Without dead ends: 37691 [2020-10-28 12:21:43,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:21:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37691 states. [2020-10-28 12:21:44,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37691 to 36618. [2020-10-28 12:21:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36618 states. [2020-10-28 12:21:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36618 states to 36618 states and 46720 transitions. [2020-10-28 12:21:44,527 INFO L78 Accepts]: Start accepts. Automaton has 36618 states and 46720 transitions. Word has length 222 [2020-10-28 12:21:44,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:44,528 INFO L481 AbstractCegarLoop]: Abstraction has 36618 states and 46720 transitions. [2020-10-28 12:21:44,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:21:44,528 INFO L276 IsEmpty]: Start isEmpty. Operand 36618 states and 46720 transitions. [2020-10-28 12:21:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-28 12:21:44,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:44,535 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:21:44,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:21:44,536 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:44,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:44,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1693653154, now seen corresponding path program 1 times [2020-10-28 12:21:44,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:44,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944649920] [2020-10-28 12:21:44,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:44,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:44,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:47,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:47,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-28 12:21:47,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:21:47,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3088 [2020-10-28 12:21:47,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:47,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:21:47,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:47,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:47,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:47,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:47,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:47,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:47,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:21:47,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:47,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:47,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:48,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:48,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:21:48,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:48,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 12:21:48,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:48,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:21:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:48,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:21:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:48,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:48,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:21:48,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:21:48,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:48,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:21:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 60 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:21:48,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944649920] [2020-10-28 12:21:48,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:48,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:21:48,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013540709] [2020-10-28 12:21:48,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:48,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:48,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:48,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:48,881 INFO L87 Difference]: Start difference. First operand 36618 states and 46720 transitions. Second operand 7 states. [2020-10-28 12:21:49,025 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 12:22:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:05,764 INFO L93 Difference]: Finished difference Result 74204 states and 95031 transitions. [2020-10-28 12:22:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:22:05,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-28 12:22:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:05,897 INFO L225 Difference]: With dead ends: 74204 [2020-10-28 12:22:05,897 INFO L226 Difference]: Without dead ends: 37592 [2020-10-28 12:22:05,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:22:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37592 states. [2020-10-28 12:22:06,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37592 to 37447. [2020-10-28 12:22:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37447 states. [2020-10-28 12:22:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37447 states to 37447 states and 47782 transitions. [2020-10-28 12:22:07,258 INFO L78 Accepts]: Start accepts. Automaton has 37447 states and 47782 transitions. Word has length 259 [2020-10-28 12:22:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:07,258 INFO L481 AbstractCegarLoop]: Abstraction has 37447 states and 47782 transitions. [2020-10-28 12:22:07,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:22:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 37447 states and 47782 transitions. [2020-10-28 12:22:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-28 12:22:07,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:07,266 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:07,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:22:07,266 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:07,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:07,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1726697676, now seen corresponding path program 1 times [2020-10-28 12:22:07,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:07,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688500374] [2020-10-28 12:22:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:07,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:07,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:08,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:12,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:12,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-28 12:22:12,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:22:12,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 12:22:12,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:12,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:22:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:22:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:12,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:12,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:12,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:12,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:22:12,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:12,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:12,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:12,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:12,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:22:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:22:12,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:12,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:22:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:22:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:12,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:12,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:22:12,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:12,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 12:22:12,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:12,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:12,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:12,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:22:12,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:12,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-28 12:22:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:12,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:12,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:12,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:22:12,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:22:12,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:12,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 12:22:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 166 proven. 80 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 12:22:13,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688500374] [2020-10-28 12:22:13,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:13,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:22:13,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247444222] [2020-10-28 12:22:13,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:22:13,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:13,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:22:13,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:22:13,128 INFO L87 Difference]: Start difference. First operand 37447 states and 47782 transitions. Second operand 7 states. [2020-10-28 12:22:13,271 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:22:33,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:33,895 INFO L93 Difference]: Finished difference Result 96943 states and 127859 transitions. [2020-10-28 12:22:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:22:33,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-28 12:22:33,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:34,098 INFO L225 Difference]: With dead ends: 96943 [2020-10-28 12:22:34,099 INFO L226 Difference]: Without dead ends: 55206 [2020-10-28 12:22:34,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:22:34,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55206 states. [2020-10-28 12:22:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55206 to 50443. [2020-10-28 12:22:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50443 states. [2020-10-28 12:22:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50443 states to 50443 states and 59899 transitions. [2020-10-28 12:22:35,762 INFO L78 Accepts]: Start accepts. Automaton has 50443 states and 59899 transitions. Word has length 280 [2020-10-28 12:22:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:35,762 INFO L481 AbstractCegarLoop]: Abstraction has 50443 states and 59899 transitions. [2020-10-28 12:22:35,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:22:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 50443 states and 59899 transitions. [2020-10-28 12:22:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-28 12:22:35,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:35,774 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:22:35,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:22:35,775 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:35,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:35,776 INFO L82 PathProgramCache]: Analyzing trace with hash 334173286, now seen corresponding path program 1 times [2020-10-28 12:22:35,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:35,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061510908] [2020-10-28 12:22:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:36,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:38,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:38,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-28 12:22:38,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:22:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2598 [2020-10-28 12:22:38,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:38,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:22:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:22:38,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:38,824 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:22:38,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:38,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:38,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:38,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:22:38,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:38,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:39,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:39,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:22:39,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:22:39,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:39,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:22:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:22:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:39,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:39,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:22:39,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 12:22:39,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:39,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:22:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:39,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-28 12:22:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:39,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:39,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:22:39,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:22:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:39,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:22:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 212 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:22:39,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061510908] [2020-10-28 12:22:39,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:39,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:22:39,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141807820] [2020-10-28 12:22:39,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:22:39,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:39,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:22:39,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:22:39,573 INFO L87 Difference]: Start difference. First operand 50443 states and 59899 transitions. Second operand 7 states.