/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:22:02,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:22:02,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:22:02,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:22:02,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:22:02,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:22:02,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:22:02,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:22:02,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:22:02,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:22:02,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:22:02,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:22:02,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:22:02,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:22:02,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:22:02,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:22:02,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:22:02,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:22:02,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:22:02,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:22:02,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:22:02,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:22:02,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:22:02,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:22:02,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:22:02,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:22:02,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:22:02,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:22:02,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:22:02,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:22:02,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:22:02,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:22:02,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:22:02,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:22:02,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:22:02,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:22:02,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:22:02,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:22:02,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:22:02,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:22:02,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:22:02,983 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 12:22:03,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:22:03,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:22:03,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:22:03,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:22:03,048 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:22:03,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:22:03,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:22:03,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:22:03,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:22:03,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:22:03,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:22:03,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:22:03,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:22:03,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:22:03,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:22:03,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:22:03,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:22:03,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:22:03,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:22:03,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:22:03,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:22:03,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:22:03,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:22:03,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:22:03,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:22:03,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:22:03,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:22:03,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:22:03,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:22:03,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:22:03,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:22:03,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:22:03,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:22:03,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:22:03,597 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:22:03,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37.c [2020-10-28 12:22:03,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee3765f5/f25cd4c46a774e45ac04174b21a3db7a/FLAG2b8179174 [2020-10-28 12:22:04,695 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:22:04,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label37.c [2020-10-28 12:22:04,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee3765f5/f25cd4c46a774e45ac04174b21a3db7a/FLAG2b8179174 [2020-10-28 12:22:05,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee3765f5/f25cd4c46a774e45ac04174b21a3db7a [2020-10-28 12:22:05,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:22:05,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:22:05,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:22:05,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:22:05,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:22:05,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:22:05" (1/1) ... [2020-10-28 12:22:05,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dee31a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:05, skipping insertion in model container [2020-10-28 12:22:05,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:22:05" (1/1) ... [2020-10-28 12:22:05,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:22:05,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:22:06,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:22:06,939 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:22:07,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:22:07,829 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:22:07,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:07 WrapperNode [2020-10-28 12:22:07,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:22:07,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:22:07,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:22:07,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:22:07,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:07" (1/1) ... [2020-10-28 12:22:07,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:07" (1/1) ... [2020-10-28 12:22:07,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:07" (1/1) ... [2020-10-28 12:22:07,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:07" (1/1) ... [2020-10-28 12:22:08,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:07" (1/1) ... [2020-10-28 12:22:08,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:07" (1/1) ... [2020-10-28 12:22:08,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:07" (1/1) ... [2020-10-28 12:22:08,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:22:08,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:22:08,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:22:08,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:22:08,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:22:08,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:22:08,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:22:08,270 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:22:08,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:22:08,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:22:08,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:22:08,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:22:08,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:22:08,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:22:08,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:22:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:22:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:22:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:22:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:22:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:22:08,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:22:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:22:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:22:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:22:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:22:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:22:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:22:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:22:08,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:22:08,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:22:14,109 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:22:14,110 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:22:14,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:22:14 BoogieIcfgContainer [2020-10-28 12:22:14,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:22:14,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:22:14,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:22:14,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:22:14,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:22:05" (1/3) ... [2020-10-28 12:22:14,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6630e327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:22:14, skipping insertion in model container [2020-10-28 12:22:14,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:07" (2/3) ... [2020-10-28 12:22:14,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6630e327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:22:14, skipping insertion in model container [2020-10-28 12:22:14,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:22:14" (3/3) ... [2020-10-28 12:22:14,130 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label37.c [2020-10-28 12:22:14,146 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:22:14,153 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:22:14,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:22:14,226 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:22:14,226 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:22:14,227 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:22:14,227 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:22:14,227 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:22:14,227 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:22:14,227 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:22:14,227 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:22:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:22:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 12:22:14,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:14,289 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] [2020-10-28 12:22:14,289 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:14,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:14,299 INFO L82 PathProgramCache]: Analyzing trace with hash -554118484, now seen corresponding path program 1 times [2020-10-28 12:22:14,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:14,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820830147] [2020-10-28 12:22:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:15,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 12:22:15,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-28 12:22:15,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:15,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:22:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:22:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 12:22:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:22:15,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:15,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:15,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:15,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:22:15,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:15,262 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 12:22:15,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820830147] [2020-10-28 12:22:15,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:22:15,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:22:15,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036825822] [2020-10-28 12:22:15,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:22:15,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:15,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:22:15,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:22:15,292 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:22:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:27,330 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:22:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:22:27,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 12:22:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:27,366 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:22:27,367 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:22:27,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:22:27,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:22:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:22:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:22:27,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-28 12:22:27,551 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 20 [2020-10-28 12:22:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:27,552 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-28 12:22:27,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:22:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-28 12:22:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 12:22:27,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:27,561 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:22:27,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:22:27,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:27,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1046876182, now seen corresponding path program 1 times [2020-10-28 12:22:27,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:27,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759646863] [2020-10-28 12:22:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:28,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:28,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 12:22:28,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:28,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-28 12:22:28,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:28,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:22:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 12:22:28,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:28,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:28,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:28,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:28,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:22:28,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:28,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:22:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:28,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:28,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:22:28,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:22:28,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:28,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:22:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:22:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:22:28,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759646863] [2020-10-28 12:22:28,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:28,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:22:28,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154679219] [2020-10-28 12:22:28,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:22:28,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:28,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:22:28,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:22:28,473 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 6 states. [2020-10-28 12:22:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:45,387 INFO L93 Difference]: Finished difference Result 6246 states and 10294 transitions. [2020-10-28 12:22:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:22:45,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-28 12:22:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:45,425 INFO L225 Difference]: With dead ends: 6246 [2020-10-28 12:22:45,426 INFO L226 Difference]: Without dead ends: 4698 [2020-10-28 12:22:45,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 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 12:22:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2020-10-28 12:22:45,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 4684. [2020-10-28 12:22:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4684 states. [2020-10-28 12:22:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 7310 transitions. [2020-10-28 12:22:45,624 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 7310 transitions. Word has length 95 [2020-10-28 12:22:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:45,625 INFO L481 AbstractCegarLoop]: Abstraction has 4684 states and 7310 transitions. [2020-10-28 12:22:45,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:22:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 7310 transitions. [2020-10-28 12:22:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 12:22:45,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:45,635 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:22:45,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:22:45,636 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:45,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:45,637 INFO L82 PathProgramCache]: Analyzing trace with hash 873614178, now seen corresponding path program 1 times [2020-10-28 12:22:45,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:45,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652148979] [2020-10-28 12:22:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:45,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:46,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:46,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:22:46,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:22:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-28 12:22:46,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:46,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:22:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:22:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:22:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:22:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:46,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:46,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:46,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:46,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:46,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:22:46,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:46,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:46,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:22:46,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:47,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:47,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:47,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:22:47,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:47,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:22:47,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:47,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:47,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:22:47,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:22:47,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652148979] [2020-10-28 12:22:47,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:22:47,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:22:47,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245579774] [2020-10-28 12:22:47,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:22:47,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:47,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:22:47,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:22:47,392 INFO L87 Difference]: Start difference. First operand 4684 states and 7310 transitions. Second operand 7 states. [2020-10-28 12:23:03,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:03,357 INFO L93 Difference]: Finished difference Result 14210 states and 22615 transitions. [2020-10-28 12:23:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:23:03,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-28 12:23:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:03,422 INFO L225 Difference]: With dead ends: 14210 [2020-10-28 12:23:03,423 INFO L226 Difference]: Without dead ends: 9532 [2020-10-28 12:23:03,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:23:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9532 states. [2020-10-28 12:23:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9532 to 9424. [2020-10-28 12:23:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9424 states. [2020-10-28 12:23:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9424 states to 9424 states and 13685 transitions. [2020-10-28 12:23:03,790 INFO L78 Accepts]: Start accepts. Automaton has 9424 states and 13685 transitions. Word has length 99 [2020-10-28 12:23:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:03,792 INFO L481 AbstractCegarLoop]: Abstraction has 9424 states and 13685 transitions. [2020-10-28 12:23:03,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:23:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 9424 states and 13685 transitions. [2020-10-28 12:23:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 12:23:03,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:03,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:23:03,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:23:03,802 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:03,803 INFO L82 PathProgramCache]: Analyzing trace with hash 975526328, now seen corresponding path program 1 times [2020-10-28 12:23:03,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:03,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138266018] [2020-10-28 12:23:03,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:04,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:04,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:04,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:23:04,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:23:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-28 12:23:04,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:04,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:23:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:23:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:23:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:04,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:04,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:04,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:04,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:04,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:23:04,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:04,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:23:04,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:05,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:05,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:05,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:05,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:23:05,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:05,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 12:23:05,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:05,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:05,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:05,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:05,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:23:05,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:23:05,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138266018] [2020-10-28 12:23:05,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:23:05,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:23:05,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886242894] [2020-10-28 12:23:05,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:23:05,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:05,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:23:05,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:23:05,366 INFO L87 Difference]: Start difference. First operand 9424 states and 13685 transitions. Second operand 7 states. [2020-10-28 12:23:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:24,107 INFO L93 Difference]: Finished difference Result 28812 states and 43632 transitions. [2020-10-28 12:23:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:23:24,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-28 12:23:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:24,213 INFO L225 Difference]: With dead ends: 28812 [2020-10-28 12:23:24,213 INFO L226 Difference]: Without dead ends: 19394 [2020-10-28 12:23:24,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:23:24,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19394 states. [2020-10-28 12:23:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19394 to 19188. [2020-10-28 12:23:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19188 states. [2020-10-28 12:23:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19188 states to 19188 states and 26169 transitions. [2020-10-28 12:23:24,929 INFO L78 Accepts]: Start accepts. Automaton has 19188 states and 26169 transitions. Word has length 110 [2020-10-28 12:23:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:24,931 INFO L481 AbstractCegarLoop]: Abstraction has 19188 states and 26169 transitions. [2020-10-28 12:23:24,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:23:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 19188 states and 26169 transitions. [2020-10-28 12:23:24,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-28 12:23:24,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:24,943 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:24,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:23:24,944 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:24,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:24,944 INFO L82 PathProgramCache]: Analyzing trace with hash -627056966, now seen corresponding path program 1 times [2020-10-28 12:23:24,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:24,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919499779] [2020-10-28 12:23:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:25,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:28,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:29,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:29,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-28 12:23:30,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:23:30,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4994 [2020-10-28 12:23:30,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:30,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:23:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:23:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:23:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:30,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:30,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:30,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:30,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:30,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:30,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:23:30,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:30,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:23:30,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:30,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:30,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:30,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:23:30,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-28 12:23:30,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:30,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:23:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:30,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 12:23:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:30,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:30,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:23:30,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:30,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:23:30,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:30,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 12:23:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:30,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 24 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:23:30,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919499779] [2020-10-28 12:23:30,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:23:30,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:23:30,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383086155] [2020-10-28 12:23:30,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:23:30,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:30,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:23:30,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:23:30,800 INFO L87 Difference]: Start difference. First operand 19188 states and 26169 transitions. Second operand 7 states. [2020-10-28 12:23:48,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:48,280 INFO L93 Difference]: Finished difference Result 53103 states and 75690 transitions. [2020-10-28 12:23:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:23:48,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-28 12:23:48,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:48,453 INFO L225 Difference]: With dead ends: 53103 [2020-10-28 12:23:48,453 INFO L226 Difference]: Without dead ends: 33921 [2020-10-28 12:23:48,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:23:48,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33921 states. [2020-10-28 12:23:49,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33921 to 31466. [2020-10-28 12:23:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31466 states. [2020-10-28 12:23:49,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31466 states to 31466 states and 41501 transitions. [2020-10-28 12:23:49,563 INFO L78 Accepts]: Start accepts. Automaton has 31466 states and 41501 transitions. Word has length 207 [2020-10-28 12:23:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:49,564 INFO L481 AbstractCegarLoop]: Abstraction has 31466 states and 41501 transitions. [2020-10-28 12:23:49,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:23:49,565 INFO L276 IsEmpty]: Start isEmpty. Operand 31466 states and 41501 transitions. [2020-10-28 12:23:49,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-28 12:23:49,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:49,569 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:49,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:23:49,569 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:49,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1449354126, now seen corresponding path program 1 times [2020-10-28 12:23:49,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:49,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977679615] [2020-10-28 12:23:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:49,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:51,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:51,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-28 12:23:51,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:23:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-28 12:23:51,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:51,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:23:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:23:51,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:51,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:51,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:51,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:23:51,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:51,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:51,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:51,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:23:51,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:23:51,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:51,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:23:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:51,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:23:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:51,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:51,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:51,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 12:23:51,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:51,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 12:23:51,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:51,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:51,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:51,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:51,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:23:51,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:23:52,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977679615] [2020-10-28 12:23:52,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:23:52,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:23:52,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631645595] [2020-10-28 12:23:52,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:23:52,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:52,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:23:52,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:23:52,063 INFO L87 Difference]: Start difference. First operand 31466 states and 41501 transitions. Second operand 8 states. [2020-10-28 12:24:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:18,537 INFO L93 Difference]: Finished difference Result 92150 states and 131457 transitions. [2020-10-28 12:24:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:24:18,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-10-28 12:24:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:18,802 INFO L225 Difference]: With dead ends: 92150 [2020-10-28 12:24:18,802 INFO L226 Difference]: Without dead ends: 57475 [2020-10-28 12:24:18,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:24:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57475 states. [2020-10-28 12:24:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57475 to 53588. [2020-10-28 12:24:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53588 states. [2020-10-28 12:24:21,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53588 states to 53588 states and 71904 transitions. [2020-10-28 12:24:21,297 INFO L78 Accepts]: Start accepts. Automaton has 53588 states and 71904 transitions. Word has length 219 [2020-10-28 12:24:21,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:21,297 INFO L481 AbstractCegarLoop]: Abstraction has 53588 states and 71904 transitions. [2020-10-28 12:24:21,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:24:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 53588 states and 71904 transitions. [2020-10-28 12:24:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-28 12:24:21,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:21,313 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:21,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:24:21,313 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:21,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:21,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1585828566, now seen corresponding path program 1 times [2020-10-28 12:24:21,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:21,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999229846] [2020-10-28 12:24:21,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:21,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:23,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:23,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-28 12:24:23,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:24:23,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1718 [2020-10-28 12:24:23,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:23,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:23,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:23,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:24:23,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:24:23,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:23,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:23,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:23,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:23,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:24:23,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:23,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:24:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:24:23,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:23,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:23,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:23,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:23,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:24:23,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:23,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 12:24:23,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:23,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:23,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:23,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:23,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:24:23,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:24:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:23,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:24,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:24:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:24:24,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 12:24:24,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:24,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:24:24,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 12:24:24,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999229846] [2020-10-28 12:24:24,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:24:24,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:24:24,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121848603] [2020-10-28 12:24:24,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:24:24,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:24,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:24:24,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:24:24,193 INFO L87 Difference]: Start difference. First operand 53588 states and 71904 transitions. Second operand 5 states. [2020-10-28 12:24:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:43,585 INFO L93 Difference]: Finished difference Result 127338 states and 176812 transitions. [2020-10-28 12:24:43,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:24:43,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-28 12:24:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:44,121 INFO L225 Difference]: With dead ends: 127338 [2020-10-28 12:24:44,122 INFO L226 Difference]: Without dead ends: 74523 [2020-10-28 12:24:44,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:24:44,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74523 states. [2020-10-28 12:24:46,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74523 to 72212. [2020-10-28 12:24:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72212 states. [2020-10-28 12:24:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72212 states to 72212 states and 100685 transitions. [2020-10-28 12:24:47,254 INFO L78 Accepts]: Start accepts. Automaton has 72212 states and 100685 transitions. Word has length 255 [2020-10-28 12:24:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:47,255 INFO L481 AbstractCegarLoop]: Abstraction has 72212 states and 100685 transitions. [2020-10-28 12:24:47,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:24:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 72212 states and 100685 transitions. [2020-10-28 12:24:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-28 12:24:47,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:47,261 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:47,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:24:47,262 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:47,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:47,262 INFO L82 PathProgramCache]: Analyzing trace with hash 615171584, now seen corresponding path program 1 times [2020-10-28 12:24:47,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:47,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122763557] [2020-10-28 12:24:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:48,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:48,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-28 12:24:48,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:48,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-28 12:24:48,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:48,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-28 12:24:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 12:24:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:48,431 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:24:48,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:48,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:48,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:48,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:24:48,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:48,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:24:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:24:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:48,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:48,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:48,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:24:48,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 12:24:48,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:48,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:24:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:24:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:24:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:48,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:48,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 12:24:48,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 12:24:48,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:48,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:24:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:24:48,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122763557] [2020-10-28 12:24:48,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:24:48,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:24:48,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493428330] [2020-10-28 12:24:48,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:24:48,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:48,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:24:48,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:24:48,998 INFO L87 Difference]: Start difference. First operand 72212 states and 100685 transitions. Second operand 5 states. [2020-10-28 12:24:50,931 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:25:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:09,483 INFO L93 Difference]: Finished difference Result 143651 states and 200653 transitions. [2020-10-28 12:25:09,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:25:09,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-28 12:25:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:09,721 INFO L225 Difference]: With dead ends: 143651 [2020-10-28 12:25:09,722 INFO L226 Difference]: Without dead ends: 72212 [2020-10-28 12:25:09,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:25:09,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72212 states. [2020-10-28 12:25:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72212 to 70678. [2020-10-28 12:25:11,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70678 states. [2020-10-28 12:25:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70678 states to 70678 states and 89455 transitions. [2020-10-28 12:25:12,066 INFO L78 Accepts]: Start accepts. Automaton has 70678 states and 89455 transitions. Word has length 268 [2020-10-28 12:25:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:12,067 INFO L481 AbstractCegarLoop]: Abstraction has 70678 states and 89455 transitions. [2020-10-28 12:25:12,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:25:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 70678 states and 89455 transitions. [2020-10-28 12:25:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-28 12:25:12,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:12,074 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:12,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:25:12,075 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:12,075 INFO L82 PathProgramCache]: Analyzing trace with hash 916437532, now seen corresponding path program 1 times [2020-10-28 12:25:12,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:12,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968983618] [2020-10-28 12:25:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:12,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:14,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:14,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-28 12:25:14,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2562 [2020-10-28 12:25:14,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:14,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:25:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:25:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:14,904 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:25:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:14,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:14,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:14,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:14,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:25:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:14,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:15,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:15,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:25:15,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:15,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 12:25:15,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:15,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:25:15,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:15,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:25:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:15,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:15,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:15,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:25:15,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:15,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 12:25:15,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:15,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:25:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:25:15,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968983618] [2020-10-28 12:25:15,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:15,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:25:15,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332667678] [2020-10-28 12:25:15,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:15,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:15,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:15,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:15,744 INFO L87 Difference]: Start difference. First operand 70678 states and 89455 transitions. Second operand 7 states. [2020-10-28 12:25:17,335 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:25:22,206 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 69