/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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:25:46,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:25:46,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:25:46,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:25:46,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:25:46,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:25:46,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:25:46,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:25:46,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:25:46,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:25:46,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:25:46,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:25:46,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:25:46,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:25:46,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:25:46,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:25:46,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:25:46,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:25:46,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:25:46,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:25:46,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:25:46,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:25:46,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:25:46,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:25:46,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:25:46,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:25:46,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:25:46,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:25:46,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:25:46,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:25:46,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:25:46,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:25:46,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:25:46,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:25:46,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:25:46,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:25:46,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:25:46,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:25:46,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:25:46,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:25:46,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:25:46,129 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 12:25:46,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:25:46,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:25:46,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:25:46,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:25:46,186 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:25:46,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:25:46,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:25:46,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:25:46,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:25:46,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:25:46,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:25:46,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:25:46,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:25:46,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:25:46,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:25:46,189 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:25:46,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:25:46,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:25:46,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:25:46,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:25:46,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:25:46,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:25:46,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:25:46,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:25:46,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:25:46,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:25:46,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:25:46,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:25:46,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:25:46,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:25:46,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:25:46,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:25:46,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:25:46,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:25:46,580 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:25:46,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label50.c [2020-10-28 12:25:46,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a61c9c901/31182d3b337545f7a2ed9d578ab03402/FLAG1c3ea669a [2020-10-28 12:25:47,658 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:25:47,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label50.c [2020-10-28 12:25:47,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a61c9c901/31182d3b337545f7a2ed9d578ab03402/FLAG1c3ea669a [2020-10-28 12:25:48,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a61c9c901/31182d3b337545f7a2ed9d578ab03402 [2020-10-28 12:25:48,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:25:48,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:25:48,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:25:48,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:25:48,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:25:48,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:25:48" (1/1) ... [2020-10-28 12:25:48,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101aeede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:48, skipping insertion in model container [2020-10-28 12:25:48,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:25:48" (1/1) ... [2020-10-28 12:25:48,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:25:48,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:25:49,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:25:49,564 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:25:50,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:25:50,355 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:25:50,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50 WrapperNode [2020-10-28 12:25:50,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:25:50,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:25:50,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:25:50,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:25:50,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 12:25:50,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 12:25:50,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 12:25:50,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 12:25:50,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 12:25:50,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 12:25:50,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (1/1) ... [2020-10-28 12:25:50,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:25:50,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:25:50,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:25:50,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:25:50,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (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 12:25:50,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:25:50,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:25:50,747 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:25:50,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:25:50,748 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:25:50,748 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:25:50,748 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:25:50,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:25:50,748 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:25:50,748 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:25:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:25:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:25:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:25:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:25:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:25:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:25:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:25:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:25:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:25:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:25:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:25:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:25:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:25:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:25:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:25:56,262 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:25:56,264 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:25:56,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:25:56 BoogieIcfgContainer [2020-10-28 12:25:56,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:25:56,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:25:56,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:25:56,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:25:56,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:25:48" (1/3) ... [2020-10-28 12:25:56,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444791ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:25:56, skipping insertion in model container [2020-10-28 12:25:56,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:25:50" (2/3) ... [2020-10-28 12:25:56,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444791ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:25:56, skipping insertion in model container [2020-10-28 12:25:56,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:25:56" (3/3) ... [2020-10-28 12:25:56,280 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label50.c [2020-10-28 12:25:56,292 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:25:56,298 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:25:56,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:25:56,351 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:25:56,351 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:25:56,351 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:25:56,351 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:25:56,352 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:25:56,352 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:25:56,352 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:25:56,352 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:25:56,389 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:25:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 12:25:56,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:56,397 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] [2020-10-28 12:25:56,398 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:56,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:56,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2048307116, now seen corresponding path program 1 times [2020-10-28 12:25:56,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:56,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118787929] [2020-10-28 12:25:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:57,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:57,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 12:25:57,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-28 12:25:57,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:57,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:25:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 12:25:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:25:57,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:57,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:57,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:57,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:25:57,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:57,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:25:57,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:57,295 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 12:25:57,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118787929] [2020-10-28 12:25:57,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:25:57,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:25:57,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967869129] [2020-10-28 12:25:57,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:25:57,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:57,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:25:57,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:25:57,321 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:25:57,478 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 12:26:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:08,418 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-28 12:26:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:26:08,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-28 12:26:08,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:08,449 INFO L225 Difference]: With dead ends: 2492 [2020-10-28 12:26:08,449 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:26:08,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:26:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:26:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-28 12:26:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-28 12:26:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-28 12:26:08,648 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 25 [2020-10-28 12:26:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:08,650 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-28 12:26:08,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:26:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-28 12:26:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 12:26:08,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:08,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:26:08,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:26:08,660 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:08,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:08,662 INFO L82 PathProgramCache]: Analyzing trace with hash 419225565, now seen corresponding path program 1 times [2020-10-28 12:26:08,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:08,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601182330] [2020-10-28 12:26:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:09,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:09,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 12:26:09,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:09,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-10-28 12:26:09,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:09,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:26:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:09,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:09,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:09,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:09,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:09,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:26:09,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:09,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:09,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:09,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:10,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:10,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:26:10,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:26:10,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:10,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:26:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:26:10,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601182330] [2020-10-28 12:26:10,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:10,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:26:10,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342747181] [2020-10-28 12:26:10,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:10,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:10,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:10,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:10,208 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 7 states. [2020-10-28 12:26:23,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:23,814 INFO L93 Difference]: Finished difference Result 4771 states and 7609 transitions. [2020-10-28 12:26:23,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:26:23,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-28 12:26:23,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:23,834 INFO L225 Difference]: With dead ends: 4771 [2020-10-28 12:26:23,834 INFO L226 Difference]: Without dead ends: 3212 [2020-10-28 12:26:23,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:26:23,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2020-10-28 12:26:23,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 3164. [2020-10-28 12:26:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-10-28 12:26:23,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 4587 transitions. [2020-10-28 12:26:23,949 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 4587 transitions. Word has length 104 [2020-10-28 12:26:23,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:23,950 INFO L481 AbstractCegarLoop]: Abstraction has 3164 states and 4587 transitions. [2020-10-28 12:26:23,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 4587 transitions. [2020-10-28 12:26:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 12:26:23,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:23,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:26:23,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:26:23,954 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:23,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:23,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1867796365, now seen corresponding path program 1 times [2020-10-28 12:26:23,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:23,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524663756] [2020-10-28 12:26:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:24,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:25,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:25,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 12:26:25,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:26:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1390 [2020-10-28 12:26:25,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:25,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:26:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:26:25,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:25,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:25,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:25,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:26:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:25,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:25,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:25,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:25,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:26:25,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:25,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 12:26:25,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:25,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:25,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:26:25,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:26:25,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524663756] [2020-10-28 12:26:25,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:25,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:26:25,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963007641] [2020-10-28 12:26:25,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:25,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:25,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:25,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:25,993 INFO L87 Difference]: Start difference. First operand 3164 states and 4587 transitions. Second operand 7 states. [2020-10-28 12:26:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:40,257 INFO L93 Difference]: Finished difference Result 9784 states and 14732 transitions. [2020-10-28 12:26:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:26:40,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-28 12:26:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:40,306 INFO L225 Difference]: With dead ends: 9784 [2020-10-28 12:26:40,306 INFO L226 Difference]: Without dead ends: 6626 [2020-10-28 12:26:40,317 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 12:26:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2020-10-28 12:26:40,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 6399. [2020-10-28 12:26:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6399 states. [2020-10-28 12:26:40,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6399 states to 6399 states and 8219 transitions. [2020-10-28 12:26:40,615 INFO L78 Accepts]: Start accepts. Automaton has 6399 states and 8219 transitions. Word has length 133 [2020-10-28 12:26:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:40,617 INFO L481 AbstractCegarLoop]: Abstraction has 6399 states and 8219 transitions. [2020-10-28 12:26:40,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6399 states and 8219 transitions. [2020-10-28 12:26:40,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 12:26:40,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:40,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:40,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:26:40,629 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:40,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:40,629 INFO L82 PathProgramCache]: Analyzing trace with hash 921392225, now seen corresponding path program 1 times [2020-10-28 12:26:40,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:40,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636909043] [2020-10-28 12:26:40,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:41,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:41,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 12:26:41,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-28 12:26:41,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:41,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:26:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 12:26:41,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:41,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:41,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:41,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:41,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:41,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:26:41,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:41,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:41,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:41,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:41,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:26:41,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 12:26:41,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:41,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:26:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:26:41,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636909043] [2020-10-28 12:26:41,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:41,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:26:41,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520030041] [2020-10-28 12:26:41,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:26:41,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:41,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:26:41,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:26:41,971 INFO L87 Difference]: Start difference. First operand 6399 states and 8219 transitions. Second operand 5 states. [2020-10-28 12:26:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:53,968 INFO L93 Difference]: Finished difference Result 19117 states and 25088 transitions. [2020-10-28 12:26:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:26:53,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-28 12:26:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:54,032 INFO L225 Difference]: With dead ends: 19117 [2020-10-28 12:26:54,032 INFO L226 Difference]: Without dead ends: 12724 [2020-10-28 12:26:54,052 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 12:26:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12724 states. [2020-10-28 12:26:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12724 to 11957. [2020-10-28 12:26:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11957 states. [2020-10-28 12:26:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11957 states to 11957 states and 14967 transitions. [2020-10-28 12:26:54,468 INFO L78 Accepts]: Start accepts. Automaton has 11957 states and 14967 transitions. Word has length 170 [2020-10-28 12:26:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:54,470 INFO L481 AbstractCegarLoop]: Abstraction has 11957 states and 14967 transitions. [2020-10-28 12:26:54,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:26:54,470 INFO L276 IsEmpty]: Start isEmpty. Operand 11957 states and 14967 transitions. [2020-10-28 12:26:54,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 12:26:54,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:54,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:54,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:26:54,474 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:54,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:54,475 INFO L82 PathProgramCache]: Analyzing trace with hash 493629917, now seen corresponding path program 1 times [2020-10-28 12:26:54,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:54,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783393665] [2020-10-28 12:26:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:56,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:56,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 12:26:56,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:56,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1662 [2020-10-28 12:26:56,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:56,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:26:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:56,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:56,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:56,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:26:56,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:56,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:56,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:56,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:56,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:56,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:56,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:56,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:26:56,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:56,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 12:26:56,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:56,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:26:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:26:56,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783393665] [2020-10-28 12:26:56,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:56,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:26:56,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733352106] [2020-10-28 12:26:56,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:26:56,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:56,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:26:56,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:26:56,884 INFO L87 Difference]: Start difference. First operand 11957 states and 14967 transitions. Second operand 8 states. [2020-10-28 12:27:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:16,155 INFO L93 Difference]: Finished difference Result 32902 states and 41050 transitions. [2020-10-28 12:27:16,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:27:16,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2020-10-28 12:27:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:16,229 INFO L225 Difference]: With dead ends: 32902 [2020-10-28 12:27:16,229 INFO L226 Difference]: Without dead ends: 20951 [2020-10-28 12:27:16,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:27:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20951 states. [2020-10-28 12:27:16,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20951 to 19248. [2020-10-28 12:27:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19248 states. [2020-10-28 12:27:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19248 states to 19248 states and 23345 transitions. [2020-10-28 12:27:16,759 INFO L78 Accepts]: Start accepts. Automaton has 19248 states and 23345 transitions. Word has length 173 [2020-10-28 12:27:16,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:16,760 INFO L481 AbstractCegarLoop]: Abstraction has 19248 states and 23345 transitions. [2020-10-28 12:27:16,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:27:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 19248 states and 23345 transitions. [2020-10-28 12:27:16,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-28 12:27:16,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:16,764 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:16,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:27:16,764 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:16,765 INFO L82 PathProgramCache]: Analyzing trace with hash 740077992, now seen corresponding path program 1 times [2020-10-28 12:27:16,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:16,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742701292] [2020-10-28 12:27:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:16,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:18,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:18,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-28 12:27:18,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-10-28 12:27:18,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:18,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:27:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:27:18,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:18,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:18,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:18,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:18,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:27:18,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:18,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:18,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:18,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:18,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:27:18,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:18,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:27:18,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:18,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:27:18,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:18,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:27:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:18,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:18,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:27:18,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 12:27:18,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:18,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:27:18,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:27:18,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742701292] [2020-10-28 12:27:18,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:18,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:27:18,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301290191] [2020-10-28 12:27:18,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:18,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:18,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:18,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:18,894 INFO L87 Difference]: Start difference. First operand 19248 states and 23345 transitions. Second operand 7 states. [2020-10-28 12:27:36,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:36,910 INFO L93 Difference]: Finished difference Result 44727 states and 56515 transitions. [2020-10-28 12:27:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:27:36,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-28 12:27:36,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:37,004 INFO L225 Difference]: With dead ends: 44727 [2020-10-28 12:27:37,004 INFO L226 Difference]: Without dead ends: 25485 [2020-10-28 12:27:37,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:27:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25485 states. [2020-10-28 12:27:37,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25485 to 25238. [2020-10-28 12:27:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25238 states. [2020-10-28 12:27:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25238 states to 25238 states and 32098 transitions. [2020-10-28 12:27:37,772 INFO L78 Accepts]: Start accepts. Automaton has 25238 states and 32098 transitions. Word has length 245 [2020-10-28 12:27:37,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:37,773 INFO L481 AbstractCegarLoop]: Abstraction has 25238 states and 32098 transitions. [2020-10-28 12:27:37,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:37,773 INFO L276 IsEmpty]: Start isEmpty. Operand 25238 states and 32098 transitions. [2020-10-28 12:27:37,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-28 12:27:37,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:37,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:37,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:27:37,778 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:37,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:37,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1016307580, now seen corresponding path program 1 times [2020-10-28 12:27:37,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:37,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799019764] [2020-10-28 12:27:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:38,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:39,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:39,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-28 12:27:39,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:27:39,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-10-28 12:27:39,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:39,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:27:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:27:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:39,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:39,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:39,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:39,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:39,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:39,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:27:39,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:39,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:39,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:39,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:39,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:39,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:27:39,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:39,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 12:27:39,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:39,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:27:39,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:39,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:27:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:39,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:39,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:40,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:40,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:27:40,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 12:27:40,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:40,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:27:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 101 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:27:40,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799019764] [2020-10-28 12:27:40,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:40,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:27:40,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021873875] [2020-10-28 12:27:40,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:27:40,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:40,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:27:40,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:27:40,197 INFO L87 Difference]: Start difference. First operand 25238 states and 32098 transitions. Second operand 6 states. [2020-10-28 12:27:57,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:57,773 INFO L93 Difference]: Finished difference Result 73305 states and 96472 transitions. [2020-10-28 12:27:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:27:57,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 259 [2020-10-28 12:27:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:57,937 INFO L225 Difference]: With dead ends: 73305 [2020-10-28 12:27:57,937 INFO L226 Difference]: Without dead ends: 48073 [2020-10-28 12:27:57,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:27:58,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48073 states. [2020-10-28 12:27:59,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48073 to 47130. [2020-10-28 12:27:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47130 states. [2020-10-28 12:27:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47130 states to 47130 states and 60557 transitions. [2020-10-28 12:27:59,115 INFO L78 Accepts]: Start accepts. Automaton has 47130 states and 60557 transitions. Word has length 259 [2020-10-28 12:27:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:59,116 INFO L481 AbstractCegarLoop]: Abstraction has 47130 states and 60557 transitions. [2020-10-28 12:27:59,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:27:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 47130 states and 60557 transitions. [2020-10-28 12:27:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-28 12:27:59,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:59,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:59,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:27:59,121 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:59,121 INFO L82 PathProgramCache]: Analyzing trace with hash 570122620, now seen corresponding path program 1 times [2020-10-28 12:27:59,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:59,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513268057] [2020-10-28 12:27:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:59,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:00,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:01,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:01,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-28 12:28:01,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:28:01,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2065 [2020-10-28 12:28:01,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:01,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:28:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:28:01,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:01,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:01,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:01,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:01,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:28:01,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:01,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:01,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:01,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:01,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:01,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:28:01,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:28:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:01,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:28:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:28:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:01,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:02,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:02,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:02,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:28:02,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:28:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 12:28:02,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:02,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:28:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 101 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:28:02,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513268057] [2020-10-28 12:28:02,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:28:02,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:28:02,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685948061] [2020-10-28 12:28:02,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:28:02,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:02,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:28:02,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:02,387 INFO L87 Difference]: Start difference. First operand 47130 states and 60557 transitions. Second operand 7 states. [2020-10-28 12:28:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:25,657 INFO L93 Difference]: Finished difference Result 106910 states and 140588 transitions. [2020-10-28 12:28:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:28:25,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-28 12:28:25,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:25,822 INFO L225 Difference]: With dead ends: 106910 [2020-10-28 12:28:25,822 INFO L226 Difference]: Without dead ends: 59786 [2020-10-28 12:28:25,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:28:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59786 states. [2020-10-28 12:28:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59786 to 58726. [2020-10-28 12:28:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58726 states. [2020-10-28 12:28:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58726 states to 58726 states and 75372 transitions. [2020-10-28 12:28:27,377 INFO L78 Accepts]: Start accepts. Automaton has 58726 states and 75372 transitions. Word has length 263 [2020-10-28 12:28:27,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:27,377 INFO L481 AbstractCegarLoop]: Abstraction has 58726 states and 75372 transitions. [2020-10-28 12:28:27,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:28:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 58726 states and 75372 transitions. [2020-10-28 12:28:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-28 12:28:27,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:27,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:28:27,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:28:27,382 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:27,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:27,382 INFO L82 PathProgramCache]: Analyzing trace with hash -479477670, now seen corresponding path program 1 times [2020-10-28 12:28:27,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:27,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138981062] [2020-10-28 12:28:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:27,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:28,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:28,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-28 12:28:28,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-10-28 12:28:28,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:28,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-28 12:28:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 12:28:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:29,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:29,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:29,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:29,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:29,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:28:29,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:29,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:29,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:29,429 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-28 12:28:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:29,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:29,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:28:29,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:29,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 12:28:29,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:29,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:29,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:28:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:28:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:29,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:29,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:29,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:28:29,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:29,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 12:28:29,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:29,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:28:29,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-28 12:28:29,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138981062] [2020-10-28 12:28:29,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:28:29,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:28:29,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3465736] [2020-10-28 12:28:29,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:28:29,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:29,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:28:29,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:28:29,988 INFO L87 Difference]: Start difference. First operand 58726 states and 75372 transitions. Second operand 5 states. [2020-10-28 12:28:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:46,842 INFO L93 Difference]: Finished difference Result 137695 states and 183921 transitions. [2020-10-28 12:28:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:28:46,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-28 12:28:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:47,345 INFO L225 Difference]: With dead ends: 137695 [2020-10-28 12:28:47,345 INFO L226 Difference]: Without dead ends: 78975 [2020-10-28 12:28:47,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:28:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78975 states. [2020-10-28 12:28:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78975 to 77388. [2020-10-28 12:28:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77388 states. [2020-10-28 12:28:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77388 states to 77388 states and 102842 transitions. [2020-10-28 12:28:49,862 INFO L78 Accepts]: Start accepts. Automaton has 77388 states and 102842 transitions. Word has length 310 [2020-10-28 12:28:49,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:49,863 INFO L481 AbstractCegarLoop]: Abstraction has 77388 states and 102842 transitions. [2020-10-28 12:28:49,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:28:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 77388 states and 102842 transitions. [2020-10-28 12:28:49,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-28 12:28:49,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:49,870 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:49,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:28:49,871 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:49,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:49,871 INFO L82 PathProgramCache]: Analyzing trace with hash 922241597, now seen corresponding path program 1 times [2020-10-28 12:28:49,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:49,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101252030] [2020-10-28 12:28:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:54,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:54,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-28 12:28:54,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:28:54,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4449 [2020-10-28 12:28:54,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:54,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 12:28:54,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:28:54,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:54,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:54,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:54,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:28:54,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:54,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:54,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:54,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:54,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:54,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:28:54,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:28:54,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:54,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:54,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:28:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:54,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:54,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:28:54,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 12:28:54,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:54,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:28:54,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:54,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 12:28:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:55,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:55,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:28:55,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:55,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 12:28:55,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:55,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:55,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:28:55,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-28 12:28:55,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101252030] [2020-10-28 12:28:55,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:28:55,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:28:55,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57323622] [2020-10-28 12:28:55,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:28:55,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:55,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:28:55,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:55,294 INFO L87 Difference]: Start difference. First operand 77388 states and 102842 transitions. Second operand 7 states. [2020-10-28 12:29:16,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:16,727 INFO L93 Difference]: Finished difference Result 177574 states and 258566 transitions. [2020-10-28 12:29:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:29:16,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 366 [2020-10-28 12:29:16,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:17,233 INFO L225 Difference]: With dead ends: 177574 [2020-10-28 12:29:17,233 INFO L226 Difference]: Without dead ends: 100192 [2020-10-28 12:29:17,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:29:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100192 states. [2020-10-28 12:29:19,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100192 to 99070. [2020-10-28 12:29:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99070 states. [2020-10-28 12:29:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99070 states to 99070 states and 129425 transitions. [2020-10-28 12:29:20,348 INFO L78 Accepts]: Start accepts. Automaton has 99070 states and 129425 transitions. Word has length 366 [2020-10-28 12:29:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:20,349 INFO L481 AbstractCegarLoop]: Abstraction has 99070 states and 129425 transitions. [2020-10-28 12:29:20,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:29:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 99070 states and 129425 transitions. [2020-10-28 12:29:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-28 12:29:20,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:20,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:29:20,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:29:20,364 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:20,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1150528544, now seen corresponding path program 1 times [2020-10-28 12:29:20,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:20,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917244705] [2020-10-28 12:29:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:22,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:22,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-28 12:29:22,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:29:22,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2497 [2020-10-28 12:29:22,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:22,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:22,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:29:22,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-28 12:29:22,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:23,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:23,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:23,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:23,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:29:23,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:23,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:23,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:23,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:23,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:23,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:29:23,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:29:23,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:23,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:29:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:23,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:29:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:23,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:23,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-28 12:29:23,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:23,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-28 12:29:23,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:23,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:29:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-28 12:29:23,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:29:24,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917244705] [2020-10-28 12:29:24,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:24,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:29:24,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169761430] [2020-10-28 12:29:24,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:29:24,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:24,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:29:24,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:29:24,006 INFO L87 Difference]: Start difference. First operand 99070 states and 129425 transitions. Second operand 7 states. [2020-10-28 12:29:24,739 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 71