/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/Problem17_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:33:42,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:33:42,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:33:42,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:33:42,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:33:43,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:33:43,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:33:43,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:33:43,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:33:43,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:33:43,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:33:43,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:33:43,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:33:43,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:33:43,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:33:43,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:33:43,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:33:43,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:33:43,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:33:43,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:33:43,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:33:43,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:33:43,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:33:43,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:33:43,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:33:43,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:33:43,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:33:43,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:33:43,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:33:43,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:33:43,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:33:43,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:33:43,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:33:43,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:33:43,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:33:43,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:33:43,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:33:43,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:33:43,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:33:43,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:33:43,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:33:43,105 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 13:33:43,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:33:43,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:33:43,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:33:43,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:33:43,162 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:33:43,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:33:43,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:33:43,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:33:43,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:33:43,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:33:43,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:33:43,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:33:43,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:33:43,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:33:43,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:33:43,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:33:43,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:33:43,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:33:43,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:33:43,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:33:43,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:33:43,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:33:43,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:33:43,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:33:43,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:33:43,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:33:43,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:33:43,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:33:43,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:33:43,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:33:43,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:33:43,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:33:43,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:33:43,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:33:43,694 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:33:43,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label17.c [2020-10-28 13:33:43,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bacb8a117/c26349b0da8a4748ae6186223b3340ae/FLAGab45682fb [2020-10-28 13:33:44,801 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:33:44,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label17.c [2020-10-28 13:33:44,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bacb8a117/c26349b0da8a4748ae6186223b3340ae/FLAGab45682fb [2020-10-28 13:33:45,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bacb8a117/c26349b0da8a4748ae6186223b3340ae [2020-10-28 13:33:45,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:33:45,341 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:33:45,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:33:45,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:33:45,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:33:45,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:33:45" (1/1) ... [2020-10-28 13:33:45,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcb6a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:45, skipping insertion in model container [2020-10-28 13:33:45,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:33:45" (1/1) ... [2020-10-28 13:33:45,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:33:45,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:33:46,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:33:46,554 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:33:47,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:33:47,094 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:33:47,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:47 WrapperNode [2020-10-28 13:33:47,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:33:47,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:33:47,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:33:47,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:33:47,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:47" (1/1) ... [2020-10-28 13:33:47,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:47" (1/1) ... [2020-10-28 13:33:47,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:47" (1/1) ... [2020-10-28 13:33:47,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:47" (1/1) ... [2020-10-28 13:33:47,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:47" (1/1) ... [2020-10-28 13:33:47,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:47" (1/1) ... [2020-10-28 13:33:47,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:47" (1/1) ... [2020-10-28 13:33:47,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:33:47,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:33:47,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:33:47,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:33:47,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:47" (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 13:33:47,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:33:47,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:33:47,555 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:33:47,555 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:33:47,555 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:33:47,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:33:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:33:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:33:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:33:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:33:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:33:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:33:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:33:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:33:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:33:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:33:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:33:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:33:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:33:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:33:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:33:57,082 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:33:57,083 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:33:57,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:33:57 BoogieIcfgContainer [2020-10-28 13:33:57,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:33:57,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:33:57,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:33:57,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:33:57,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:33:45" (1/3) ... [2020-10-28 13:33:57,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26557e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:33:57, skipping insertion in model container [2020-10-28 13:33:57,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:33:47" (2/3) ... [2020-10-28 13:33:57,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26557e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:33:57, skipping insertion in model container [2020-10-28 13:33:57,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:33:57" (3/3) ... [2020-10-28 13:33:57,096 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label17.c [2020-10-28 13:33:57,109 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:33:57,115 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:33:57,130 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:33:57,164 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:33:57,165 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:33:57,165 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:33:57,165 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:33:57,165 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:33:57,165 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:33:57,165 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:33:57,166 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:33:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:33:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 13:33:57,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:57,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:57,210 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:57,217 INFO L82 PathProgramCache]: Analyzing trace with hash -146325245, now seen corresponding path program 1 times [2020-10-28 13:33:57,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:57,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238531869] [2020-10-28 13:33:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:58,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:58,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 13:33:58,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-28 13:33:58,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:58,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:33:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:33:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 13:33:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:33:58,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:58,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:58,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:58,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:33:58,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:58,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:33:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:33:58,366 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 13:33:58,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238531869] [2020-10-28 13:33:58,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:33:58,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:33:58,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117893229] [2020-10-28 13:33:58,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:33:58,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:58,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:33:58,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:33:58,402 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:34:12,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:12,772 INFO L93 Difference]: Finished difference Result 1698 states and 3099 transitions. [2020-10-28 13:34:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:34:12,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-28 13:34:12,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:12,822 INFO L225 Difference]: With dead ends: 1698 [2020-10-28 13:34:12,823 INFO L226 Difference]: Without dead ends: 1012 [2020-10-28 13:34:12,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:34:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-28 13:34:12,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 987. [2020-10-28 13:34:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 987 states. [2020-10-28 13:34:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1579 transitions. [2020-10-28 13:34:13,012 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1579 transitions. Word has length 45 [2020-10-28 13:34:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:34:13,013 INFO L481 AbstractCegarLoop]: Abstraction has 987 states and 1579 transitions. [2020-10-28 13:34:13,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:34:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1579 transitions. [2020-10-28 13:34:13,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 13:34:13,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:34:13,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:13,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:34:13,026 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:34:13,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:34:13,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1292671230, now seen corresponding path program 1 times [2020-10-28 13:34:13,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:34:13,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609938584] [2020-10-28 13:34:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:34:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:13,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:13,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:14,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:14,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:14,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 13:34:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:34:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-10-28 13:34:14,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:14,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:34:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:34:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:34:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:15,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:34:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:15,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:15,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:15,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:34:15,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:15,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:34:15,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:15,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:34:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:34:15,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:34:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:15,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:15,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:34:15,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:15,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 13:34:15,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:15,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:34:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:34:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:34:15,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609938584] [2020-10-28 13:34:15,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:34:15,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:34:15,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433585332] [2020-10-28 13:34:15,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:34:15,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:34:15,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:34:15,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:34:15,523 INFO L87 Difference]: Start difference. First operand 987 states and 1579 transitions. Second operand 7 states. [2020-10-28 13:34:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:32,535 INFO L93 Difference]: Finished difference Result 2470 states and 4050 transitions. [2020-10-28 13:34:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:34:32,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-28 13:34:32,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:32,553 INFO L225 Difference]: With dead ends: 2470 [2020-10-28 13:34:32,553 INFO L226 Difference]: Without dead ends: 1489 [2020-10-28 13:34:32,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:34:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2020-10-28 13:34:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1443. [2020-10-28 13:34:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-10-28 13:34:32,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2030 transitions. [2020-10-28 13:34:32,616 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2030 transitions. Word has length 114 [2020-10-28 13:34:32,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:34:32,617 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 2030 transitions. [2020-10-28 13:34:32,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:34:32,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2030 transitions. [2020-10-28 13:34:32,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 13:34:32,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:34:32,620 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:32,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:34:32,621 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:34:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:34:32,621 INFO L82 PathProgramCache]: Analyzing trace with hash 173715735, now seen corresponding path program 1 times [2020-10-28 13:34:32,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:34:32,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102299573] [2020-10-28 13:34:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:34:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:33,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:33,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 13:34:33,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:34:33,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-28 13:34:33,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:33,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 13:34:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:34:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 13:34:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:34,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:34:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:34,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:34:34,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:34:34,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:34,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:34:34,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:34,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:34:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:34,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:34,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:34,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:34:34,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:34,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-28 13:34:34,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:34,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:34:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:34:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:34:34,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:34:34,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102299573] [2020-10-28 13:34:34,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:34:34,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:34:34,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189602508] [2020-10-28 13:34:34,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:34:34,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:34:34,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:34:34,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:34:34,533 INFO L87 Difference]: Start difference. First operand 1443 states and 2030 transitions. Second operand 8 states. [2020-10-28 13:34:35,446 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:35:01,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:01,857 INFO L93 Difference]: Finished difference Result 4376 states and 6637 transitions. [2020-10-28 13:35:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:35:01,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 119 [2020-10-28 13:35:01,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:01,881 INFO L225 Difference]: With dead ends: 4376 [2020-10-28 13:35:01,882 INFO L226 Difference]: Without dead ends: 3372 [2020-10-28 13:35:01,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:35:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2020-10-28 13:35:01,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3279. [2020-10-28 13:35:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3279 states. [2020-10-28 13:35:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 4547 transitions. [2020-10-28 13:35:02,008 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 4547 transitions. Word has length 119 [2020-10-28 13:35:02,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:02,009 INFO L481 AbstractCegarLoop]: Abstraction has 3279 states and 4547 transitions. [2020-10-28 13:35:02,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:35:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 4547 transitions. [2020-10-28 13:35:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 13:35:02,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:02,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:02,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:35:02,013 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:02,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:02,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1063046370, now seen corresponding path program 1 times [2020-10-28 13:35:02,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:02,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675441279] [2020-10-28 13:35:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:02,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:03,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:03,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 13:35:03,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:35:03,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1356 [2020-10-28 13:35:03,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:03,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:03,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:35:03,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:35:03,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:35:03,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:03,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:03,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:03,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:35:03,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:03,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:35:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:03,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:03,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:35:03,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:03,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 13:35:03,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:03,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:35:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:35:03,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:35:04,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675441279] [2020-10-28 13:35:04,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:35:04,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:35:04,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358451477] [2020-10-28 13:35:04,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:35:04,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:04,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:35:04,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:35:04,092 INFO L87 Difference]: Start difference. First operand 3279 states and 4547 transitions. Second operand 7 states. [2020-10-28 13:35:04,250 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:35:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:21,406 INFO L93 Difference]: Finished difference Result 6765 states and 10036 transitions. [2020-10-28 13:35:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:35:21,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-28 13:35:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:21,434 INFO L225 Difference]: With dead ends: 6765 [2020-10-28 13:35:21,435 INFO L226 Difference]: Without dead ends: 3007 [2020-10-28 13:35:21,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:35:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2020-10-28 13:35:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2407. [2020-10-28 13:35:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2407 states. [2020-10-28 13:35:21,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 3187 transitions. [2020-10-28 13:35:21,583 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 3187 transitions. Word has length 135 [2020-10-28 13:35:21,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:21,585 INFO L481 AbstractCegarLoop]: Abstraction has 2407 states and 3187 transitions. [2020-10-28 13:35:21,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:35:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 3187 transitions. [2020-10-28 13:35:21,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-28 13:35:21,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:21,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:35:21,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:35:21,593 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:21,594 INFO L82 PathProgramCache]: Analyzing trace with hash 573948235, now seen corresponding path program 1 times [2020-10-28 13:35:21,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:21,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238601409] [2020-10-28 13:35:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:26,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:26,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-28 13:35:26,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:35:26,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 13:35:26,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:26,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:26,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:35:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 13:35:26,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:26,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:26,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:26,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:26,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:35:26,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:26,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:26,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:27,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:27,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:27,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:27,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:35:27,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:27,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:35:27,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:27,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:35:27,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:35:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:27,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:27,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:35:27,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:35:27,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:27,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:35:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:35:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:35:27,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238601409] [2020-10-28 13:35:27,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:35:27,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:35:27,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469419808] [2020-10-28 13:35:27,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:35:27,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:27,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:35:27,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:35:27,351 INFO L87 Difference]: Start difference. First operand 2407 states and 3187 transitions. Second operand 5 states. [2020-10-28 13:35:27,511 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:35:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:53,807 INFO L93 Difference]: Finished difference Result 7094 states and 9571 transitions. [2020-10-28 13:35:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:35:53,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-28 13:35:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:53,841 INFO L225 Difference]: With dead ends: 7094 [2020-10-28 13:35:53,841 INFO L226 Difference]: Without dead ends: 4693 [2020-10-28 13:35:53,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:35:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2020-10-28 13:35:54,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 4232. [2020-10-28 13:35:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4232 states. [2020-10-28 13:35:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 5701 transitions. [2020-10-28 13:35:54,024 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 5701 transitions. Word has length 207 [2020-10-28 13:35:54,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:54,026 INFO L481 AbstractCegarLoop]: Abstraction has 4232 states and 5701 transitions. [2020-10-28 13:35:54,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:35:54,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 5701 transitions. [2020-10-28 13:35:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-28 13:35:54,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:54,030 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:54,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:35:54,031 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:54,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1471194274, now seen corresponding path program 1 times [2020-10-28 13:35:54,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:54,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283507909] [2020-10-28 13:35:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:54,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:54,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:54,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:59,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:59,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:35:59,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:35:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 13:35:59,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:59,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:35:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:35:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:35:59,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:59,352 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:35:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:59,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:59,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:59,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:59,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:35:59,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:59,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:59,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:59,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:59,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:35:59,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:59,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 13:35:59,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:59,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:35:59,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:35:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:59,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:59,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:59,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 13:35:59,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:35:59,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-28 13:35:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:59,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:35:59,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-28 13:36:00,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283507909] [2020-10-28 13:36:00,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:00,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:36:00,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388931813] [2020-10-28 13:36:00,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:36:00,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:00,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:36:00,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:36:00,006 INFO L87 Difference]: Start difference. First operand 4232 states and 5701 transitions. Second operand 5 states. [2020-10-28 13:36:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:16,797 INFO L93 Difference]: Finished difference Result 8897 states and 12226 transitions. [2020-10-28 13:36:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:36:16,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-28 13:36:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:16,821 INFO L225 Difference]: With dead ends: 8897 [2020-10-28 13:36:16,821 INFO L226 Difference]: Without dead ends: 4671 [2020-10-28 13:36:16,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:36:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2020-10-28 13:36:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 4667. [2020-10-28 13:36:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4667 states. [2020-10-28 13:36:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4667 states to 4667 states and 6482 transitions. [2020-10-28 13:36:16,982 INFO L78 Accepts]: Start accepts. Automaton has 4667 states and 6482 transitions. Word has length 210 [2020-10-28 13:36:16,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:16,983 INFO L481 AbstractCegarLoop]: Abstraction has 4667 states and 6482 transitions. [2020-10-28 13:36:16,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:36:16,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4667 states and 6482 transitions. [2020-10-28 13:36:16,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-28 13:36:16,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:16,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:36:16,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:36:16,988 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:16,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:16,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1496622443, now seen corresponding path program 1 times [2020-10-28 13:36:16,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:16,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458938176] [2020-10-28 13:36:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:17,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:17,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:22,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:22,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-28 13:36:22,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:36:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 13:36:22,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:22,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:36:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:36:22,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:36:22,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:22,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:22,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:22,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:22,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:22,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:36:22,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:22,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:22,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:22,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:22,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:22,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:36:22,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:36:22,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:22,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:36:22,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:22,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:36:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:22,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:22,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:22,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:36:22,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:36:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 13:36:22,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:22,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:36:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:36:22,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458938176] [2020-10-28 13:36:22,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:22,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:36:22,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089032359] [2020-10-28 13:36:22,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:36:22,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:22,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:36:22,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:36:22,886 INFO L87 Difference]: Start difference. First operand 4667 states and 6482 transitions. Second operand 6 states. [2020-10-28 13:36:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:38,400 INFO L93 Difference]: Finished difference Result 9332 states and 12968 transitions. [2020-10-28 13:36:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:36:38,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 218 [2020-10-28 13:36:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:38,424 INFO L225 Difference]: With dead ends: 9332 [2020-10-28 13:36:38,424 INFO L226 Difference]: Without dead ends: 4671 [2020-10-28 13:36:38,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:36:38,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2020-10-28 13:36:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 4232. [2020-10-28 13:36:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4232 states. [2020-10-28 13:36:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 5670 transitions. [2020-10-28 13:36:38,586 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 5670 transitions. Word has length 218 [2020-10-28 13:36:38,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:38,587 INFO L481 AbstractCegarLoop]: Abstraction has 4232 states and 5670 transitions. [2020-10-28 13:36:38,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:36:38,587 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 5670 transitions. [2020-10-28 13:36:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-28 13:36:38,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:38,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:36:38,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:36:38,592 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:38,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:38,593 INFO L82 PathProgramCache]: Analyzing trace with hash 178512403, now seen corresponding path program 1 times [2020-10-28 13:36:38,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:38,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074797706] [2020-10-28 13:36:38,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:38,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:38,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:40,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:40,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-28 13:36:40,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:36:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-10-28 13:36:40,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:40,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:40,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:36:40,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:36:40,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:40,355 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:36:40,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:40,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:40,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:40,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:40,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:36:40,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:40,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:40,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:40,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:40,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:40,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:36:40,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:40,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:36:40,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:40,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:40,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:40,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:40,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:36:40,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:40,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:36:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:40,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:40,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:36:40,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:40,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 13:36:40,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:40,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:40,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:40,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:36:40,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:36:40,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:36:40,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074797706] [2020-10-28 13:36:40,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:40,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:36:40,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275862498] [2020-10-28 13:36:40,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:36:40,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:40,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:36:40,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:36:40,941 INFO L87 Difference]: Start difference. First operand 4232 states and 5670 transitions. Second operand 7 states. [2020-10-28 13:36:41,127 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:37:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:00,517 INFO L93 Difference]: Finished difference Result 11630 states and 16283 transitions. [2020-10-28 13:37:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:37:00,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-28 13:37:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:00,567 INFO L225 Difference]: With dead ends: 11630 [2020-10-28 13:37:00,567 INFO L226 Difference]: Without dead ends: 7404 [2020-10-28 13:37:00,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:37:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7404 states. [2020-10-28 13:37:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7404 to 6953. [2020-10-28 13:37:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6953 states. [2020-10-28 13:37:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6953 states to 6953 states and 9404 transitions. [2020-10-28 13:37:00,802 INFO L78 Accepts]: Start accepts. Automaton has 6953 states and 9404 transitions. Word has length 227 [2020-10-28 13:37:00,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:00,803 INFO L481 AbstractCegarLoop]: Abstraction has 6953 states and 9404 transitions. [2020-10-28 13:37:00,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:37:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 6953 states and 9404 transitions. [2020-10-28 13:37:00,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-28 13:37:00,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:00,810 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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 13:37:00,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:37:00,810 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:00,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:00,811 INFO L82 PathProgramCache]: Analyzing trace with hash 304428895, now seen corresponding path program 1 times [2020-10-28 13:37:00,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:00,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531294601] [2020-10-28 13:37:00,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:00,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:01,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:03,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:05,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:05,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-28 13:37:05,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:37:05,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 13:37:05,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:05,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:05,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:05,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:37:05,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:37:05,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:06,129 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:37:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:06,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:06,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:06,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:37:06,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:06,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:06,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:06,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:06,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:37:06,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:37:06,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:06,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:06,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:37:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:06,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:06,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:37:06,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:06,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:37:06,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:06,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:06,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:06,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:37:06,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:06,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-28 13:37:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:06,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:06,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:06,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:37:06,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:06,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 13:37:06,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:06,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:37:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:37:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-28 13:37:06,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531294601] [2020-10-28 13:37:06,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:37:06,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:37:06,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439323253] [2020-10-28 13:37:06,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:37:06,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:06,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:37:06,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:37:06,907 INFO L87 Difference]: Start difference. First operand 6953 states and 9404 transitions. Second operand 7 states.