/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_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:14:29,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:14:29,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:14:29,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:14:29,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:14:29,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:14:29,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:14:29,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:14:29,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:14:29,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:14:29,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:14:29,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:14:29,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:14:29,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:14:29,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:14:29,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:14:29,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:14:29,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:14:29,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:14:29,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:14:29,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:14:29,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:14:29,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:14:29,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:14:29,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:14:29,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:14:29,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:14:29,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:14:29,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:14:29,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:14:29,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:14:29,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:14:29,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:14:29,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:14:29,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:14:29,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:14:29,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:14:29,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:14:29,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:14:29,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:14:29,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:14:29,145 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 12:14:29,178 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:14:29,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:14:29,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:14:29,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:14:29,183 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:14:29,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:14:29,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:14:29,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:14:29,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:14:29,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:14:29,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:14:29,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:14:29,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:14:29,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:14:29,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:14:29,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:14:29,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:14:29,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:14:29,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:14:29,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:14:29,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:14:29,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:14:29,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:14:29,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:14:29,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:14:29,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:14:29,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:14:29,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:14:29,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:14:29,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:14:29,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:14:29,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:14:29,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:14:29,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:14:29,656 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:14:29,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2020-10-28 12:14:29,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f06da5b3/21256235d4924f00b460cfbf846bac84/FLAGd7ec07024 [2020-10-28 12:14:30,775 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:14:30,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2020-10-28 12:14:30,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f06da5b3/21256235d4924f00b460cfbf846bac84/FLAGd7ec07024 [2020-10-28 12:14:31,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f06da5b3/21256235d4924f00b460cfbf846bac84 [2020-10-28 12:14:31,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:14:31,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:14:31,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:14:31,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:14:31,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:14:31,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:14:31" (1/1) ... [2020-10-28 12:14:31,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb0ce25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:31, skipping insertion in model container [2020-10-28 12:14:31,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:14:31" (1/1) ... [2020-10-28 12:14:31,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:14:31,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:14:32,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:14:32,796 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:14:33,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:14:33,486 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:14:33,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:33 WrapperNode [2020-10-28 12:14:33,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:14:33,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:14:33,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:14:33,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:14:33,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:33" (1/1) ... [2020-10-28 12:14:33,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:33" (1/1) ... [2020-10-28 12:14:33,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:33" (1/1) ... [2020-10-28 12:14:33,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:33" (1/1) ... [2020-10-28 12:14:33,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:33" (1/1) ... [2020-10-28 12:14:33,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:33" (1/1) ... [2020-10-28 12:14:33,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:33" (1/1) ... [2020-10-28 12:14:33,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:14:33,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:14:33,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:14:33,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:14:33,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:33" (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 12:14:33,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:14:33,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:14:33,957 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:14:33,957 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:14:33,957 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:14:33,957 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:14:33,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:14:33,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:14:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:14:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:14:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:14:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:14:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:14:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:14:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:14:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:14:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:14:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:14:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:14:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:14:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:14:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:14:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:14:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:14:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:14:39,775 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:14:39,776 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:14:39,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:14:39 BoogieIcfgContainer [2020-10-28 12:14:39,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:14:39,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:14:39,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:14:39,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:14:39,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:14:31" (1/3) ... [2020-10-28 12:14:39,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f632685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:14:39, skipping insertion in model container [2020-10-28 12:14:39,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:33" (2/3) ... [2020-10-28 12:14:39,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f632685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:14:39, skipping insertion in model container [2020-10-28 12:14:39,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:14:39" (3/3) ... [2020-10-28 12:14:39,794 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label09.c [2020-10-28 12:14:39,814 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:14:39,821 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:14:39,838 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:14:39,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:14:39,887 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:14:39,887 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:14:39,888 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:14:39,888 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:14:39,888 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:14:39,888 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:14:39,888 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:14:39,939 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:14:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 12:14:39,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:39,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:39,957 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:39,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:39,967 INFO L82 PathProgramCache]: Analyzing trace with hash -387387116, now seen corresponding path program 1 times [2020-10-28 12:14:39,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:39,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160555328] [2020-10-28 12:14:39,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:40,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:40,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:40,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 12:14:40,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-28 12:14:40,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:40,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:14:40,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:14:40,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:14:40,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:14:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:41,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:41,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:41,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:41,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:41,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:14:41,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:41,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:41,279 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 12:14:41,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160555328] [2020-10-28 12:14:41,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:14:41,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:14:41,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909439190] [2020-10-28 12:14:41,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:14:41,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:41,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:14:41,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:14:41,314 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:14:53,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:53,170 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:14:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:14:53,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-28 12:14:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:53,202 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:14:53,202 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:14:53,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:14:53,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:14:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:14:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:14:53,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-28 12:14:53,391 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 73 [2020-10-28 12:14:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:53,392 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-28 12:14:53,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:14:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-28 12:14:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 12:14:53,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:53,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:14:53,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:14:53,400 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:53,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:53,401 INFO L82 PathProgramCache]: Analyzing trace with hash 837735313, now seen corresponding path program 1 times [2020-10-28 12:14:53,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:53,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772854179] [2020-10-28 12:14:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:54,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:55,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:55,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 12:14:55,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1601 [2020-10-28 12:14:55,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:55,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:14:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:14:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:14:55,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:14:55,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:55,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:55,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:55,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:55,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:55,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:14:55,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:55,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:14:55,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:55,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:55,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:55,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:14:55,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 12:14:55,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:55,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:14:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:14:55,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772854179] [2020-10-28 12:14:55,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:14:55,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:14:55,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694030156] [2020-10-28 12:14:55,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:55,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:55,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:55,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:55,616 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 7 states. [2020-10-28 12:15:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:09,165 INFO L93 Difference]: Finished difference Result 3995 states and 7283 transitions. [2020-10-28 12:15:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:15:09,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-28 12:15:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:09,192 INFO L225 Difference]: With dead ends: 3995 [2020-10-28 12:15:09,202 INFO L226 Difference]: Without dead ends: 2447 [2020-10-28 12:15:09,208 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 12:15:09,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2020-10-28 12:15:09,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2373. [2020-10-28 12:15:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-28 12:15:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3837 transitions. [2020-10-28 12:15:09,321 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3837 transitions. Word has length 146 [2020-10-28 12:15:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:09,322 INFO L481 AbstractCegarLoop]: Abstraction has 2373 states and 3837 transitions. [2020-10-28 12:15:09,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:15:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3837 transitions. [2020-10-28 12:15:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 12:15:09,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:09,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:15:09,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:15:09,326 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:09,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:09,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1801977963, now seen corresponding path program 1 times [2020-10-28 12:15:09,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:09,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277501889] [2020-10-28 12:15:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:09,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:09,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:09,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:10,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:10,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:15:10,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:15:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-28 12:15:10,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:10,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:15:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:15:10,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:15:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:10,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:10,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:10,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:15:10,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:10,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:10,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:10,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:11,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:11,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:15:11,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:15:11,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:11,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:15:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:15:11,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277501889] [2020-10-28 12:15:11,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:15:11,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:15:11,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623942221] [2020-10-28 12:15:11,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:15:11,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:11,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:15:11,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:15:11,105 INFO L87 Difference]: Start difference. First operand 2373 states and 3837 transitions. Second operand 5 states. [2020-10-28 12:15:23,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:23,597 INFO L93 Difference]: Finished difference Result 7137 states and 11732 transitions. [2020-10-28 12:15:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:15:23,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-28 12:15:23,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:23,627 INFO L225 Difference]: With dead ends: 7137 [2020-10-28 12:15:23,627 INFO L226 Difference]: Without dead ends: 4770 [2020-10-28 12:15:23,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:15:23,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2020-10-28 12:15:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 4752. [2020-10-28 12:15:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4752 states. [2020-10-28 12:15:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 6828 transitions. [2020-10-28 12:15:23,785 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 6828 transitions. Word has length 148 [2020-10-28 12:15:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:23,786 INFO L481 AbstractCegarLoop]: Abstraction has 4752 states and 6828 transitions. [2020-10-28 12:15:23,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:15:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 6828 transitions. [2020-10-28 12:15:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 12:15:23,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:23,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:15:23,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:15:23,790 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:23,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:23,791 INFO L82 PathProgramCache]: Analyzing trace with hash -220896351, now seen corresponding path program 1 times [2020-10-28 12:15:23,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:23,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99577193] [2020-10-28 12:15:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:23,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:24,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:24,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 12:15:24,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:15:24,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-10-28 12:15:24,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:24,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:24,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:15:24,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:15:24,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:15:24,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:25,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:25,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:25,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:25,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:25,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:15:25,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:25,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:15:25,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:25,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:25,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:25,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:15:25,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:25,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 12:15:25,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:25,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:15:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:15:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:15:25,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99577193] [2020-10-28 12:15:25,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:15:25,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:15:25,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520487354] [2020-10-28 12:15:25,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:15:25,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:25,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:15:25,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:15:25,351 INFO L87 Difference]: Start difference. First operand 4752 states and 6828 transitions. Second operand 7 states. [2020-10-28 12:15:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:43,454 INFO L93 Difference]: Finished difference Result 14556 states and 21726 transitions. [2020-10-28 12:15:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:15:43,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-28 12:15:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:43,512 INFO L225 Difference]: With dead ends: 14556 [2020-10-28 12:15:43,512 INFO L226 Difference]: Without dead ends: 9810 [2020-10-28 12:15:43,527 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 12:15:43,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9810 states. [2020-10-28 12:15:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9810 to 9728. [2020-10-28 12:15:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9728 states. [2020-10-28 12:15:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9728 states to 9728 states and 13788 transitions. [2020-10-28 12:15:43,832 INFO L78 Accepts]: Start accepts. Automaton has 9728 states and 13788 transitions. Word has length 154 [2020-10-28 12:15:43,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:43,832 INFO L481 AbstractCegarLoop]: Abstraction has 9728 states and 13788 transitions. [2020-10-28 12:15:43,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:15:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand 9728 states and 13788 transitions. [2020-10-28 12:15:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 12:15:43,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:43,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:15:43,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:15:43,836 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash -943551575, now seen corresponding path program 1 times [2020-10-28 12:15:43,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:43,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642779050] [2020-10-28 12:15:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:43,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:44,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:44,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 12:15:44,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:15:44,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-10-28 12:15:44,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:44,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:15:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:15:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:15:44,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:44,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:44,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:44,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:44,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:15:44,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:44,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:15:44,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:45,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:45,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:15:45,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:45,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:15:45,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:45,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:15:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:15:45,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642779050] [2020-10-28 12:15:45,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:15:45,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:15:45,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269315613] [2020-10-28 12:15:45,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:15:45,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:45,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:15:45,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:15:45,264 INFO L87 Difference]: Start difference. First operand 9728 states and 13788 transitions. Second operand 7 states. [2020-10-28 12:16:03,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:03,607 INFO L93 Difference]: Finished difference Result 28711 states and 42655 transitions. [2020-10-28 12:16:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:16:03,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-10-28 12:16:03,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:03,730 INFO L225 Difference]: With dead ends: 28711 [2020-10-28 12:16:03,731 INFO L226 Difference]: Without dead ends: 18989 [2020-10-28 12:16:03,771 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 12:16:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18989 states. [2020-10-28 12:16:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18989 to 18011. [2020-10-28 12:16:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18011 states. [2020-10-28 12:16:04,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18011 states to 18011 states and 24673 transitions. [2020-10-28 12:16:04,444 INFO L78 Accepts]: Start accepts. Automaton has 18011 states and 24673 transitions. Word has length 158 [2020-10-28 12:16:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:16:04,445 INFO L481 AbstractCegarLoop]: Abstraction has 18011 states and 24673 transitions. [2020-10-28 12:16:04,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:16:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 18011 states and 24673 transitions. [2020-10-28 12:16:04,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 12:16:04,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:16:04,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:16:04,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:16:04,453 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:16:04,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:16:04,453 INFO L82 PathProgramCache]: Analyzing trace with hash -920091058, now seen corresponding path program 1 times [2020-10-28 12:16:04,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:16:04,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306731664] [2020-10-28 12:16:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:16:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:04,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:06,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:06,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:06,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 12:16:06,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:16:06,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1857 [2020-10-28 12:16:06,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:06,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:06,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:16:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:16:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 12:16:06,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:06,833 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:16:06,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:16:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:06,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:06,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:06,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:16:06,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:06,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:16:06,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:06,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:16:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:16:06,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:06,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:16:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:06,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:06,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:06,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:16:06,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:06,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 12:16:06,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:06,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:06,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:16:06,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:06,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:16:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:07,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:07,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:07,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:16:07,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:16:07,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-28 12:16:07,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:07,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:16:07,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 12:16:07,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306731664] [2020-10-28 12:16:07,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:16:07,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:16:07,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65350382] [2020-10-28 12:16:07,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:16:07,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:16:07,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:16:07,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:16:07,431 INFO L87 Difference]: Start difference. First operand 18011 states and 24673 transitions. Second operand 6 states. [2020-10-28 12:16:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:28,863 INFO L93 Difference]: Finished difference Result 43998 states and 62860 transitions. [2020-10-28 12:16:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:16:28,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 256 [2020-10-28 12:16:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:29,076 INFO L225 Difference]: With dead ends: 43998 [2020-10-28 12:16:29,076 INFO L226 Difference]: Without dead ends: 25993 [2020-10-28 12:16:29,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:16:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25993 states. [2020-10-28 12:16:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25993 to 24327. [2020-10-28 12:16:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24327 states. [2020-10-28 12:16:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24327 states to 24327 states and 33471 transitions. [2020-10-28 12:16:29,948 INFO L78 Accepts]: Start accepts. Automaton has 24327 states and 33471 transitions. Word has length 256 [2020-10-28 12:16:29,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:16:29,949 INFO L481 AbstractCegarLoop]: Abstraction has 24327 states and 33471 transitions. [2020-10-28 12:16:29,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:16:29,949 INFO L276 IsEmpty]: Start isEmpty. Operand 24327 states and 33471 transitions. [2020-10-28 12:16:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 12:16:29,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:16:29,956 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:16:29,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:16:29,956 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:16:29,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:16:29,958 INFO L82 PathProgramCache]: Analyzing trace with hash 991466368, now seen corresponding path program 1 times [2020-10-28 12:16:29,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:16:29,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559730720] [2020-10-28 12:16:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:16:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:30,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:30,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:31,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:31,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 12:16:31,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:16:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-10-28 12:16:31,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:31,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:16:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:16:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:16:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:31,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:16:31,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:16:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:31,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:16:31,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:31,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:16:31,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:31,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:16:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:31,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:31,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:16:31,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:31,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:16:31,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:31,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:16:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:16:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:16:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:31,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:16:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:31,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:31,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:16:31,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:16:31,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:16:31,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 12:16:31,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:16:31,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:16:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:16:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:16:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:16:31,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:16:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:16:32,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559730720] [2020-10-28 12:16:32,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:16:32,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:16:32,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666718394] [2020-10-28 12:16:32,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:16:32,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:16:32,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:16:32,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:16:32,155 INFO L87 Difference]: Start difference. First operand 24327 states and 33471 transitions. Second operand 7 states. [2020-10-28 12:16:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:54,899 INFO L93 Difference]: Finished difference Result 71086 states and 111900 transitions. [2020-10-28 12:16:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:16:54,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-28 12:16:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:55,303 INFO L225 Difference]: With dead ends: 71086 [2020-10-28 12:16:55,304 INFO L226 Difference]: Without dead ends: 46765 [2020-10-28 12:16:55,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:16:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46765 states. [2020-10-28 12:16:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46765 to 43836. [2020-10-28 12:16:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43836 states. [2020-10-28 12:16:57,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43836 states to 43836 states and 59526 transitions. [2020-10-28 12:16:57,118 INFO L78 Accepts]: Start accepts. Automaton has 43836 states and 59526 transitions. Word has length 261 [2020-10-28 12:16:57,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:16:57,119 INFO L481 AbstractCegarLoop]: Abstraction has 43836 states and 59526 transitions. [2020-10-28 12:16:57,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:16:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand 43836 states and 59526 transitions. [2020-10-28 12:16:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-28 12:16:57,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:16:57,129 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:16:57,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:16:57,130 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:16:57,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:16:57,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1537398568, now seen corresponding path program 1 times [2020-10-28 12:16:57,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:16:57,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100196964] [2020-10-28 12:16:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:16:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:16:57,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:16:57,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:00,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:00,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-28 12:17:00,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:17:00,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3513 [2020-10-28 12:17:00,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:00,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:00,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:00,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:00,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:17:00,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:00,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:00,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:00,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:00,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:17:00,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:00,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:00,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:00,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:00,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:01,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:01,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:17:01,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 12:17:01,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:01,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:01,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:17:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:17:01,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:01,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:17:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:01,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:01,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:17:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:17:01,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:01,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:17:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 130 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:17:01,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100196964] [2020-10-28 12:17:01,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:17:01,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:17:01,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573086841] [2020-10-28 12:17:01,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:17:01,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:01,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:17:01,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:17:01,677 INFO L87 Difference]: Start difference. First operand 43836 states and 59526 transitions. Second operand 7 states. [2020-10-28 12:17:20,995 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:17:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:22,927 INFO L93 Difference]: Finished difference Result 88145 states and 120394 transitions. [2020-10-28 12:17:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:17:22,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-28 12:17:22,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:23,110 INFO L225 Difference]: With dead ends: 88145 [2020-10-28 12:17:23,111 INFO L226 Difference]: Without dead ends: 43530 [2020-10-28 12:17:23,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:17:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43530 states. [2020-10-28 12:17:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43530 to 43288. [2020-10-28 12:17:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43288 states. [2020-10-28 12:17:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43288 states to 43288 states and 59186 transitions. [2020-10-28 12:17:24,949 INFO L78 Accepts]: Start accepts. Automaton has 43288 states and 59186 transitions. Word has length 294 [2020-10-28 12:17:24,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:24,949 INFO L481 AbstractCegarLoop]: Abstraction has 43288 states and 59186 transitions. [2020-10-28 12:17:24,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:17:24,950 INFO L276 IsEmpty]: Start isEmpty. Operand 43288 states and 59186 transitions. [2020-10-28 12:17:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 12:17:24,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:24,964 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:24,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:17:24,964 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:24,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1584096256, now seen corresponding path program 1 times [2020-10-28 12:17:24,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:24,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138796170] [2020-10-28 12:17:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:25,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:25,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:26,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:27,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:27,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-28 12:17:27,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:17:27,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2018 [2020-10-28 12:17:27,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:27,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:17:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:17:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:27,411 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:17:27,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:27,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:27,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:27,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:27,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:17:27,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:27,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:27,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:27,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:27,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:27,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:17:27,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 12:17:27,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:27,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:17:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:27,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:17:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:28,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:28,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:17:28,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-28 12:17:28,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:28,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:28,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:17:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:17:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:17:28,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138796170] [2020-10-28 12:17:28,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:17:28,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:17:28,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476539702] [2020-10-28 12:17:28,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:17:28,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:28,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:17:28,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:17:28,308 INFO L87 Difference]: Start difference. First operand 43288 states and 59186 transitions. Second operand 7 states. [2020-10-28 12:17:29,324 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:17:45,879 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:17:55,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:55,639 INFO L93 Difference]: Finished difference Result 91612 states and 125871 transitions. [2020-10-28 12:17:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:17:55,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-28 12:17:55,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:55,789 INFO L225 Difference]: With dead ends: 91612 [2020-10-28 12:17:55,789 INFO L226 Difference]: Without dead ends: 43428 [2020-10-28 12:17:55,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:17:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43428 states. [2020-10-28 12:17:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43428 to 42339. [2020-10-28 12:17:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42339 states. [2020-10-28 12:17:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42339 states to 42339 states and 50838 transitions. [2020-10-28 12:17:57,179 INFO L78 Accepts]: Start accepts. Automaton has 42339 states and 50838 transitions. Word has length 325 [2020-10-28 12:17:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:57,179 INFO L481 AbstractCegarLoop]: Abstraction has 42339 states and 50838 transitions. [2020-10-28 12:17:57,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:17:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 42339 states and 50838 transitions. [2020-10-28 12:17:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-28 12:17:57,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:57,191 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 12:17:57,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:17:57,192 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:57,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:57,192 INFO L82 PathProgramCache]: Analyzing trace with hash 241301857, now seen corresponding path program 1 times [2020-10-28 12:17:57,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:57,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346219242] [2020-10-28 12:17:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:57,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:02,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:02,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-28 12:18:02,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:18:02,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 12:18:02,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:02,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:18:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 12:18:02,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:02,504 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:18:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:02,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:02,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:02,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:02,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:18:02,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:02,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:02,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:02,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:02,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:02,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:18:02,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:02,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:18:02,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:02,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:18:02,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:02,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:18:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:03,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:03,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:18:03,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:18:03,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:03,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:18:03,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:03,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-28 12:18:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:03,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:03,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:18:03,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:18:03,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:03,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:18:03,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 351 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:18:03,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346219242] [2020-10-28 12:18:03,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:03,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:18:03,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569220944] [2020-10-28 12:18:03,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:18:03,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:03,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:18:03,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:18:03,470 INFO L87 Difference]: Start difference. First operand 42339 states and 50838 transitions. Second operand 7 states. [2020-10-28 12:18:03,647 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:18:08,761 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66