/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/Problem13_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:37:13,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:37:13,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:37:13,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:37:13,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:37:13,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:37:13,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:37:13,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:37:13,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:37:13,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:37:13,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:37:13,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:37:13,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:37:13,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:37:13,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:37:13,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:37:13,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:37:13,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:37:13,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:37:13,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:37:13,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:37:13,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:37:13,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:37:13,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:37:13,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:37:13,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:37:13,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:37:13,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:37:13,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:37:13,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:37:13,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:37:13,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:37:13,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:37:13,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:37:13,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:37:13,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:37:13,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:37:13,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:37:13,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:37:13,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:37:13,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:37:13,475 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 12:37:13,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:37:13,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:37:13,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:37:13,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:37:13,513 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:37:13,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:37:13,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:37:13,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:37:13,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:37:13,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:37:13,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:37:13,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:37:13,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:37:13,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:37:13,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:37:13,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:37:13,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:37:13,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:37:13,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:37:13,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:37:13,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:37:13,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:37:13,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:37:13,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:37:13,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:37:13,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:37:13,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:37:13,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:37:13,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:37:13,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:37:13,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:37:14,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:37:14,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:37:14,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:37:14,068 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:37:14,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32.c [2020-10-28 12:37:14,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2720388a5/78bd4409d06d4758a4638de4bbb602fd/FLAG1021ff3b9 [2020-10-28 12:37:15,451 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:37:15,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label32.c [2020-10-28 12:37:15,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2720388a5/78bd4409d06d4758a4638de4bbb602fd/FLAG1021ff3b9 [2020-10-28 12:37:15,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2720388a5/78bd4409d06d4758a4638de4bbb602fd [2020-10-28 12:37:15,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:37:15,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:37:15,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:37:15,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:37:15,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:37:15,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:37:15" (1/1) ... [2020-10-28 12:37:15,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188d3348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:15, skipping insertion in model container [2020-10-28 12:37:15,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:37:15" (1/1) ... [2020-10-28 12:37:15,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:37:16,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:37:18,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:37:18,156 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:37:18,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:37:19,027 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:37:19,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:19 WrapperNode [2020-10-28 12:37:19,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:37:19,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:37:19,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:37:19,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:37:19,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:19" (1/1) ... [2020-10-28 12:37:19,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:19" (1/1) ... [2020-10-28 12:37:19,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:19" (1/1) ... [2020-10-28 12:37:19,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:19" (1/1) ... [2020-10-28 12:37:19,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:19" (1/1) ... [2020-10-28 12:37:19,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:19" (1/1) ... [2020-10-28 12:37:19,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:19" (1/1) ... [2020-10-28 12:37:19,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:37:19,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:37:19,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:37:19,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:37:19,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:19" (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 12:37:19,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:37:19,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:37:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:37:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:37:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:37:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:37:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:37:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:37:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:37:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:37:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:37:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:37:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:37:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:37:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:37:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:37:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:37:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:37:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:37:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:37:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:37:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:37:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:37:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:37:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:37:31,974 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:37:31,974 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:37:31,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:37:31 BoogieIcfgContainer [2020-10-28 12:37:31,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:37:31,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:37:31,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:37:31,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:37:31,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:37:15" (1/3) ... [2020-10-28 12:37:31,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14967048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:37:31, skipping insertion in model container [2020-10-28 12:37:31,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:19" (2/3) ... [2020-10-28 12:37:31,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14967048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:37:31, skipping insertion in model container [2020-10-28 12:37:31,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:37:31" (3/3) ... [2020-10-28 12:37:32,000 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label32.c [2020-10-28 12:37:32,016 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:37:32,025 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:37:32,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:37:32,091 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:37:32,091 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:37:32,091 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:37:32,091 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:37:32,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:37:32,092 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:37:32,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:37:32,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:37:32,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:37:32,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 12:37:32,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:37:32,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:37:32,155 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:37:32,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:37:32,173 INFO L82 PathProgramCache]: Analyzing trace with hash 146632850, now seen corresponding path program 1 times [2020-10-28 12:37:32,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:37:32,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260347858] [2020-10-28 12:37:32,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:37:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:33,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:33,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 12:37:33,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-28 12:37:33,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:33,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:37:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:37:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 12:37:33,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:37:33,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:37:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:33,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:33,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:33,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:37:33,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:33,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:37:33,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:33,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:37:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:37:33,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:37:33,433 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 12:37:33,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260347858] [2020-10-28 12:37:33,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:37:33,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:37:33,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341766446] [2020-10-28 12:37:33,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:37:33,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:37:33,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:37:33,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:37:33,471 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:37:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:37:51,975 INFO L93 Difference]: Finished difference Result 3123 states and 5754 transitions. [2020-10-28 12:37:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:37:51,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 12:37:51,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:37:52,017 INFO L225 Difference]: With dead ends: 3123 [2020-10-28 12:37:52,018 INFO L226 Difference]: Without dead ends: 1936 [2020-10-28 12:37:52,036 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 12:37:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-10-28 12:37:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1918. [2020-10-28 12:37:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-10-28 12:37:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2936 transitions. [2020-10-28 12:37:52,237 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2936 transitions. Word has length 15 [2020-10-28 12:37:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:37:52,239 INFO L481 AbstractCegarLoop]: Abstraction has 1918 states and 2936 transitions. [2020-10-28 12:37:52,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:37:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2936 transitions. [2020-10-28 12:37:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 12:37:52,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:37:52,248 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:37:52,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:37:52,249 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:37:52,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:37:52,251 INFO L82 PathProgramCache]: Analyzing trace with hash -52101640, now seen corresponding path program 1 times [2020-10-28 12:37:52,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:37:52,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946732114] [2020-10-28 12:37:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:37:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:52,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:53,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:53,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:37:53,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:37:53,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1172 [2020-10-28 12:37:53,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:53,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:37:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:37:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:37:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:37:53,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:37:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:53,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:53,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:37:53,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:53,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:37:53,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:53,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:53,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:37:53,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:37:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:53,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:37:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:53,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:54,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:54,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:37:54,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:54,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 12:37:54,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:54,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:37:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:37:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:37:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:37:54,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946732114] [2020-10-28 12:37:54,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:37:54,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:37:54,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976829496] [2020-10-28 12:37:54,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:37:54,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:37:54,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:37:54,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:37:54,164 INFO L87 Difference]: Start difference. First operand 1918 states and 2936 transitions. Second operand 7 states. [2020-10-28 12:38:28,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:38:28,234 INFO L93 Difference]: Finished difference Result 5685 states and 8808 transitions. [2020-10-28 12:38:28,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:38:28,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-28 12:38:28,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:38:28,267 INFO L225 Difference]: With dead ends: 5685 [2020-10-28 12:38:28,268 INFO L226 Difference]: Without dead ends: 3773 [2020-10-28 12:38:28,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:38:28,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2020-10-28 12:38:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3661. [2020-10-28 12:38:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3661 states. [2020-10-28 12:38:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 5428 transitions. [2020-10-28 12:38:28,475 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 5428 transitions. Word has length 91 [2020-10-28 12:38:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:38:28,476 INFO L481 AbstractCegarLoop]: Abstraction has 3661 states and 5428 transitions. [2020-10-28 12:38:28,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:38:28,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 5428 transitions. [2020-10-28 12:38:28,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 12:38:28,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:38:28,479 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:38:28,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:38:28,480 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:38:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:38:28,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1332922779, now seen corresponding path program 1 times [2020-10-28 12:38:28,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:38:28,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946746365] [2020-10-28 12:38:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:38:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:28,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:29,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:29,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:38:29,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:38:29,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-10-28 12:38:29,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:29,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:38:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:38:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:38:29,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:38:29,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:38:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:29,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:29,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:29,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:38:29,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:38:29,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:29,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:38:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:38:29,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:29,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:38:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:30,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:30,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:38:30,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 12:38:30,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:30,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:38:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:38:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:38:30,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:38:30,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946746365] [2020-10-28 12:38:30,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:38:30,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:38:30,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169755597] [2020-10-28 12:38:30,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:38:30,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:38:30,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:38:30,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:38:30,200 INFO L87 Difference]: Start difference. First operand 3661 states and 5428 transitions. Second operand 7 states. [2020-10-28 12:38:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:38:59,338 INFO L93 Difference]: Finished difference Result 11036 states and 16634 transitions. [2020-10-28 12:38:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:38:59,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-28 12:38:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:38:59,388 INFO L225 Difference]: With dead ends: 11036 [2020-10-28 12:38:59,388 INFO L226 Difference]: Without dead ends: 7381 [2020-10-28 12:38:59,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:38:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7381 states. [2020-10-28 12:38:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7381 to 7287. [2020-10-28 12:38:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7287 states. [2020-10-28 12:38:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7287 states to 7287 states and 10218 transitions. [2020-10-28 12:38:59,658 INFO L78 Accepts]: Start accepts. Automaton has 7287 states and 10218 transitions. Word has length 105 [2020-10-28 12:38:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:38:59,659 INFO L481 AbstractCegarLoop]: Abstraction has 7287 states and 10218 transitions. [2020-10-28 12:38:59,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:38:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7287 states and 10218 transitions. [2020-10-28 12:38:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 12:38:59,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:38:59,664 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:38:59,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:38:59,664 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:38:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:38:59,665 INFO L82 PathProgramCache]: Analyzing trace with hash -2093849022, now seen corresponding path program 1 times [2020-10-28 12:38:59,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:38:59,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444381227] [2020-10-28 12:38:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:38:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:59,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:00,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:00,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:39:00,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:39:00,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 874 [2020-10-28 12:39:00,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:00,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:39:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:39:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:39:00,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:00,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:39:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:00,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:00,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:39:00,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:39:00,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:00,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:39:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:39:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:39:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:00,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:01,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:01,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:39:01,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:01,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 12:39:01,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:01,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:01,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:39:01,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:39:01,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:39:01,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:39:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:39:01,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444381227] [2020-10-28 12:39:01,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:39:01,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:39:01,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843765135] [2020-10-28 12:39:01,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:39:01,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:39:01,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:39:01,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:39:01,295 INFO L87 Difference]: Start difference. First operand 7287 states and 10218 transitions. Second operand 7 states. [2020-10-28 12:39:02,930 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:39:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:39:30,899 INFO L93 Difference]: Finished difference Result 20850 states and 30154 transitions. [2020-10-28 12:39:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:39:30,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-28 12:39:30,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:39:30,988 INFO L225 Difference]: With dead ends: 20850 [2020-10-28 12:39:30,988 INFO L226 Difference]: Without dead ends: 13569 [2020-10-28 12:39:31,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:39:31,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13569 states. [2020-10-28 12:39:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13569 to 13346. [2020-10-28 12:39:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13346 states. [2020-10-28 12:39:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 17293 transitions. [2020-10-28 12:39:31,466 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 17293 transitions. Word has length 105 [2020-10-28 12:39:31,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:39:31,468 INFO L481 AbstractCegarLoop]: Abstraction has 13346 states and 17293 transitions. [2020-10-28 12:39:31,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:39:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 17293 transitions. [2020-10-28 12:39:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-28 12:39:31,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:39:31,547 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 12:39:31,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:39:31,548 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:39:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:39:31,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1295185262, now seen corresponding path program 1 times [2020-10-28 12:39:31,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:39:31,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937038321] [2020-10-28 12:39:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:39:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:31,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:34,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:34,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 12:39:34,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:39:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3358 [2020-10-28 12:39:34,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:34,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:34,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:39:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:39:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 12:39:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:39:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:35,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:35,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:39:35,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:35,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:39:35,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:35,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:39:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:39:35,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:39:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:35,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:35,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:35,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:39:35,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:35,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 12:39:35,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:35,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:39:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:39:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:39:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:39:35,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:39:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:35,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:35,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:39:35,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 12:39:35,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:35,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:39:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 12:39:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:39:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:39:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:39:35,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937038321] [2020-10-28 12:39:35,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:39:35,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:39:35,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780256122] [2020-10-28 12:39:35,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:39:35,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:39:35,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:39:35,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:39:35,983 INFO L87 Difference]: Start difference. First operand 13346 states and 17293 transitions. Second operand 7 states. [2020-10-28 12:39:36,149 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:39:37,975 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 12:40:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:40:04,837 INFO L93 Difference]: Finished difference Result 26284 states and 34498 transitions. [2020-10-28 12:40:04,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:40:04,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-28 12:40:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:40:04,890 INFO L225 Difference]: With dead ends: 26284 [2020-10-28 12:40:04,890 INFO L226 Difference]: Without dead ends: 13747 [2020-10-28 12:40:04,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:40:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13747 states. [2020-10-28 12:40:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13747 to 13444. [2020-10-28 12:40:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13444 states. [2020-10-28 12:40:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13444 states to 13444 states and 17490 transitions. [2020-10-28 12:40:05,330 INFO L78 Accepts]: Start accepts. Automaton has 13444 states and 17490 transitions. Word has length 185 [2020-10-28 12:40:05,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:40:05,330 INFO L481 AbstractCegarLoop]: Abstraction has 13444 states and 17490 transitions. [2020-10-28 12:40:05,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:40:05,331 INFO L276 IsEmpty]: Start isEmpty. Operand 13444 states and 17490 transitions. [2020-10-28 12:40:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-28 12:40:05,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:40:05,334 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:05,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:40:05,334 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:40:05,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:40:05,335 INFO L82 PathProgramCache]: Analyzing trace with hash 807729049, now seen corresponding path program 1 times [2020-10-28 12:40:05,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:40:05,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426213391] [2020-10-28 12:40:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:40:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:06,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:06,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:06,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-28 12:40:06,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:40:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1354 [2020-10-28 12:40:06,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:06,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:40:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:40:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 12:40:06,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:06,961 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:40:06,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:40:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:06,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:06,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:40:06,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:40:06,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:06,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:40:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:40:06,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:40:07,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:40:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:07,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:07,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:40:07,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:07,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:40:07,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:07,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:40:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:40:07,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:40:07,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:40:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:07,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:07,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:40:07,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:40:07,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 12:40:07,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:07,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:40:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:40:07,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:40:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 12:40:07,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426213391] [2020-10-28 12:40:07,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:40:07,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:40:07,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662545610] [2020-10-28 12:40:07,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:40:07,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:40:07,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:40:07,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:40:07,558 INFO L87 Difference]: Start difference. First operand 13444 states and 17490 transitions. Second operand 7 states. [2020-10-28 12:40:07,729 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:40:09,005 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:40:09,536 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:40:53,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:40:53,522 INFO L93 Difference]: Finished difference Result 43700 states and 64358 transitions. [2020-10-28 12:40:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:40:53,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-28 12:40:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:40:53,668 INFO L225 Difference]: With dead ends: 43700 [2020-10-28 12:40:53,668 INFO L226 Difference]: Without dead ends: 31065 [2020-10-28 12:40:53,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:40:53,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31065 states. [2020-10-28 12:40:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31065 to 31009. [2020-10-28 12:40:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31009 states. [2020-10-28 12:40:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31009 states to 31009 states and 43914 transitions. [2020-10-28 12:40:54,655 INFO L78 Accepts]: Start accepts. Automaton has 31009 states and 43914 transitions. Word has length 192 [2020-10-28 12:40:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:40:54,655 INFO L481 AbstractCegarLoop]: Abstraction has 31009 states and 43914 transitions. [2020-10-28 12:40:54,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:40:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 31009 states and 43914 transitions. [2020-10-28 12:40:54,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-28 12:40:54,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:40:54,663 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 12:40:54,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:40:54,664 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:40:54,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:40:54,664 INFO L82 PathProgramCache]: Analyzing trace with hash 419398147, now seen corresponding path program 1 times [2020-10-28 12:40:54,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:40:54,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731358112] [2020-10-28 12:40:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:40:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:54,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:59,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:59,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-28 12:40:59,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:40:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 12:40:59,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:59,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:40:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:40:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:40:59,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:41:00,001 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:41:00,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:41:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:00,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:00,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:41:00,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:00,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:41:00,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:00,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:41:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:41:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:41:00,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:41:00,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:41:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:00,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:00,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:00,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:41:00,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:00,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 12:41:00,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:00,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:41:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:41:00,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:41:00,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:41:00,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:41:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:00,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:00,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:00,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:41:00,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:41:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-28 12:41:00,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:00,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:41:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:41:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:41:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:41:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-28 12:41:00,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731358112] [2020-10-28 12:41:00,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:41:00,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:41:00,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847420646] [2020-10-28 12:41:00,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:41:00,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:41:00,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:41:00,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:41:00,909 INFO L87 Difference]: Start difference. First operand 31009 states and 43914 transitions. Second operand 5 states. [2020-10-28 12:41:02,341 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 66