/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem15_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:43:58,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:43:58,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:43:58,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:43:58,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:43:58,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:43:58,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:43:58,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:43:58,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:43:58,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:43:58,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:43:58,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:43:58,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:43:58,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:43:58,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:43:58,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:43:58,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:43:58,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:43:58,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:43:58,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:43:58,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:43:58,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:43:58,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:43:58,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:43:58,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:43:58,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:43:58,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:43:58,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:43:58,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:43:58,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:43:58,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:43:58,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:43:58,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:43:58,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:43:58,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:43:58,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:43:58,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:43:58,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:43:58,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:43:58,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:43:58,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:43:58,884 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 [2020-10-29 07:43:58,942 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:43:58,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:43:58,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:43:58,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:43:58,949 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:43:58,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:43:58,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:43:58,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:43:58,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:43:58,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:43:58,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:43:58,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:43:58,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:43:58,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:43:58,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:43:58,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:43:58,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:43:58,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:43:58,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:43:58,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:43:58,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:43:58,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:43:58,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:43:58,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:43:58,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:43:58,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:43:58,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:43:58,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:43:58,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:43:58,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:43:59,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:43:59,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:43:59,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:43:59,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:43:59,439 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:43:59,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19.c [2020-10-29 07:43:59,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a610d988/d1459221677941cd99d6d703a356c75e/FLAG73990fba7 [2020-10-29 07:44:00,665 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:44:00,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label19.c [2020-10-29 07:44:00,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a610d988/d1459221677941cd99d6d703a356c75e/FLAG73990fba7 [2020-10-29 07:44:01,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a610d988/d1459221677941cd99d6d703a356c75e [2020-10-29 07:44:01,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:44:01,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:44:01,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:44:01,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:44:01,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:44:01,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:44:01" (1/1) ... [2020-10-29 07:44:01,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db21812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:01, skipping insertion in model container [2020-10-29 07:44:01,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:44:01" (1/1) ... [2020-10-29 07:44:01,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:44:01,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:44:02,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:44:02,281 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:44:02,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:44:02,599 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:44:02,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:02 WrapperNode [2020-10-29 07:44:02,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:44:02,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:44:02,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:44:02,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:44:02,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:02" (1/1) ... [2020-10-29 07:44:02,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:02" (1/1) ... [2020-10-29 07:44:02,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:02" (1/1) ... [2020-10-29 07:44:02,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:02" (1/1) ... [2020-10-29 07:44:02,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:02" (1/1) ... [2020-10-29 07:44:02,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:02" (1/1) ... [2020-10-29 07:44:02,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:02" (1/1) ... [2020-10-29 07:44:02,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:44:02,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:44:02,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:44:02,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:44:02,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:02" (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 [2020-10-29 07:44:02,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:44:02,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:44:02,966 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:44:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:44:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:44:02,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:44:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:44:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:44:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:44:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:44:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:44:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:44:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:44:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:44:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:44:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:44:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:44:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:44:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:44:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:44:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:44:06,818 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:44:06,819 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:44:06,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:44:06 BoogieIcfgContainer [2020-10-29 07:44:06,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:44:06,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:44:06,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:44:06,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:44:06,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:44:01" (1/3) ... [2020-10-29 07:44:06,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fea11cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:44:06, skipping insertion in model container [2020-10-29 07:44:06,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:44:02" (2/3) ... [2020-10-29 07:44:06,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fea11cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:44:06, skipping insertion in model container [2020-10-29 07:44:06,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:44:06" (3/3) ... [2020-10-29 07:44:06,832 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label19.c [2020-10-29 07:44:06,845 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:44:06,852 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:44:06,867 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:44:06,900 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:44:06,900 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:44:06,900 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:44:06,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:44:06,900 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:44:06,901 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:44:06,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:44:06,901 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:44:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:44:06,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 07:44:06,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:06,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:06,943 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:06,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2026005569, now seen corresponding path program 1 times [2020-10-29 07:44:06,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:06,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378264055] [2020-10-29 07:44:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:07,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:07,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:07,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 07:44:07,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-29 07:44:07,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:07,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 07:44:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:44:08,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:08,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:08,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:08,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:44:08,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:08,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:08,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:44:08,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378264055] [2020-10-29 07:44:08,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:44:08,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:44:08,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848091766] [2020-10-29 07:44:08,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:44:08,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:08,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:44:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:44:08,162 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:44:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:17,758 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-29 07:44:17,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:44:17,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-29 07:44:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:17,793 INFO L225 Difference]: With dead ends: 1204 [2020-10-29 07:44:17,793 INFO L226 Difference]: Without dead ends: 698 [2020-10-29 07:44:17,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:44:17,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-29 07:44:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-29 07:44:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-29 07:44:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-29 07:44:17,975 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 52 [2020-10-29 07:44:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:17,976 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-29 07:44:17,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:44:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-29 07:44:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 07:44:17,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:17,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:17,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:44:17,986 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash -439716042, now seen corresponding path program 1 times [2020-10-29 07:44:17,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:17,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115101176] [2020-10-29 07:44:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:18,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:18,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:19,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:21,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:21,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 07:44:21,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:21,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2946 [2020-10-29 07:44:21,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:21,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:21,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:21,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:21,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:44:21,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:44:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:21,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:21,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:44:21,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:21,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:21,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 07:44:21,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:21,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:21,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:44:21,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 07:44:21,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:21,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:21,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:21,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:21,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:44:21,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:44:21,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115101176] [2020-10-29 07:44:21,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:44:21,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:44:21,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706968334] [2020-10-29 07:44:21,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:21,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:21,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:21,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:21,667 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-29 07:44:22,921 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 07:44:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:31,885 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-29 07:44:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:44:31,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-29 07:44:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:31,898 INFO L225 Difference]: With dead ends: 1712 [2020-10-29 07:44:31,899 INFO L226 Difference]: Without dead ends: 1026 [2020-10-29 07:44:31,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:44:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-29 07:44:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-29 07:44:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-29 07:44:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-29 07:44:31,983 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 121 [2020-10-29 07:44:31,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:31,984 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-29 07:44:31,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-29 07:44:31,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 07:44:31,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:31,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:31,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:44:31,988 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:31,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:31,989 INFO L82 PathProgramCache]: Analyzing trace with hash 429496498, now seen corresponding path program 1 times [2020-10-29 07:44:31,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:31,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37361304] [2020-10-29 07:44:31,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:33,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:33,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:33,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 07:44:33,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-10-29 07:44:33,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:33,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:44:33,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:34,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:34,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:34,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:34,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:34,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:34,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:44:34,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:34,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:34,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:34,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:34,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:34,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:34,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:44:34,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:34,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 07:44:34,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:34,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:44:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:44:34,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37361304] [2020-10-29 07:44:34,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:44:34,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:44:34,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110855963] [2020-10-29 07:44:34,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:44:34,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:34,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:44:34,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:44:34,382 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 8 states. [2020-10-29 07:44:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:51,812 INFO L93 Difference]: Finished difference Result 3021 states and 4376 transitions. [2020-10-29 07:44:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:44:51,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-29 07:44:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:51,829 INFO L225 Difference]: With dead ends: 3021 [2020-10-29 07:44:51,829 INFO L226 Difference]: Without dead ends: 2319 [2020-10-29 07:44:51,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:44:51,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-10-29 07:44:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 1982. [2020-10-29 07:44:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2020-10-29 07:44:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 2655 transitions. [2020-10-29 07:44:51,918 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 2655 transitions. Word has length 126 [2020-10-29 07:44:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:51,919 INFO L481 AbstractCegarLoop]: Abstraction has 1982 states and 2655 transitions. [2020-10-29 07:44:51,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:44:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 2655 transitions. [2020-10-29 07:44:51,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 07:44:51,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:51,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:51,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:44:51,923 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:51,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:51,923 INFO L82 PathProgramCache]: Analyzing trace with hash -205360748, now seen corresponding path program 1 times [2020-10-29 07:44:51,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:51,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585021901] [2020-10-29 07:44:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:52,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:52,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:52,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 07:44:52,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-29 07:44:52,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:52,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:44:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 07:44:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:52,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:52,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:52,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:52,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:52,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:44:52,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:52,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:53,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:53,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:44:53,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:53,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 07:44:53,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:53,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:44:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:44:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:44:53,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585021901] [2020-10-29 07:44:53,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:53,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:44:53,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030823764] [2020-10-29 07:44:53,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:44:53,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:53,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:44:53,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:44:53,197 INFO L87 Difference]: Start difference. First operand 1982 states and 2655 transitions. Second operand 5 states. [2020-10-29 07:44:59,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:59,342 INFO L93 Difference]: Finished difference Result 4012 states and 5380 transitions. [2020-10-29 07:44:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:44:59,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-29 07:44:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:59,361 INFO L225 Difference]: With dead ends: 4012 [2020-10-29 07:44:59,361 INFO L226 Difference]: Without dead ends: 1990 [2020-10-29 07:44:59,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:44:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2020-10-29 07:44:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1979. [2020-10-29 07:44:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1979 states. [2020-10-29 07:44:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 2633 transitions. [2020-10-29 07:44:59,442 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 2633 transitions. Word has length 147 [2020-10-29 07:44:59,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:59,444 INFO L481 AbstractCegarLoop]: Abstraction has 1979 states and 2633 transitions. [2020-10-29 07:44:59,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:44:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 2633 transitions. [2020-10-29 07:44:59,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 07:44:59,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:59,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:59,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:44:59,452 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:59,453 INFO L82 PathProgramCache]: Analyzing trace with hash -541071670, now seen corresponding path program 1 times [2020-10-29 07:44:59,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:59,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767788566] [2020-10-29 07:44:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:59,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:01,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:01,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 07:45:01,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:45:01,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2379 [2020-10-29 07:45:01,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:01,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:45:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 07:45:01,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:02,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:02,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:02,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:02,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:02,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:02,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:45:02,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:02,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:02,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:02,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:02,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:02,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:02,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:02,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:45:02,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:02,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-29 07:45:02,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:02,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 07:45:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:02,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767788566] [2020-10-29 07:45:02,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:45:02,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:45:02,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16315117] [2020-10-29 07:45:02,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:02,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:02,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:02,993 INFO L87 Difference]: Start difference. First operand 1979 states and 2633 transitions. Second operand 7 states. [2020-10-29 07:45:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:12,708 INFO L93 Difference]: Finished difference Result 4674 states and 6287 transitions. [2020-10-29 07:45:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:45:12,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-29 07:45:12,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:12,732 INFO L225 Difference]: With dead ends: 4674 [2020-10-29 07:45:12,732 INFO L226 Difference]: Without dead ends: 2701 [2020-10-29 07:45:12,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:45:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2020-10-29 07:45:12,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2614. [2020-10-29 07:45:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2614 states. [2020-10-29 07:45:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3314 transitions. [2020-10-29 07:45:12,844 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3314 transitions. Word has length 214 [2020-10-29 07:45:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:12,844 INFO L481 AbstractCegarLoop]: Abstraction has 2614 states and 3314 transitions. [2020-10-29 07:45:12,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3314 transitions. [2020-10-29 07:45:12,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 07:45:12,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:12,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:12,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:45:12,849 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:12,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:12,849 INFO L82 PathProgramCache]: Analyzing trace with hash -905493338, now seen corresponding path program 1 times [2020-10-29 07:45:12,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:12,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202923294] [2020-10-29 07:45:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:13,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:13,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:13,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 07:45:13,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-10-29 07:45:13,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:13,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-29 07:45:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 07:45:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:13,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:13,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:13,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:13,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:13,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:45:13,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:13,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:13,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:13,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:14,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:14,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:14,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 07:45:14,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-29 07:45:14,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:14,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 07:45:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:14,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202923294] [2020-10-29 07:45:14,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:14,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:45:14,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459894013] [2020-10-29 07:45:14,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:45:14,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:14,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:45:14,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:45:14,476 INFO L87 Difference]: Start difference. First operand 2614 states and 3314 transitions. Second operand 5 states. [2020-10-29 07:45:23,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:23,184 INFO L93 Difference]: Finished difference Result 4968 states and 6380 transitions. [2020-10-29 07:45:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:45:23,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-29 07:45:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:23,208 INFO L225 Difference]: With dead ends: 4968 [2020-10-29 07:45:23,208 INFO L226 Difference]: Without dead ends: 2628 [2020-10-29 07:45:23,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:45:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2020-10-29 07:45:23,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2614. [2020-10-29 07:45:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2614 states. [2020-10-29 07:45:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3284 transitions. [2020-10-29 07:45:23,285 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3284 transitions. Word has length 232 [2020-10-29 07:45:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:23,286 INFO L481 AbstractCegarLoop]: Abstraction has 2614 states and 3284 transitions. [2020-10-29 07:45:23,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:45:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3284 transitions. [2020-10-29 07:45:23,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-29 07:45:23,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:23,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:23,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:45:23,291 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:23,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:23,291 INFO L82 PathProgramCache]: Analyzing trace with hash -827791033, now seen corresponding path program 1 times [2020-10-29 07:45:23,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:23,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061732768] [2020-10-29 07:45:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:23,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:26,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:26,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-29 07:45:26,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2754 [2020-10-29 07:45:26,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:26,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:45:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-29 07:45:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:26,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:26,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:26,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:26,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:26,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:45:26,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:26,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:26,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:27,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:27,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:45:27,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:27,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-29 07:45:27,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:27,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:45:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 07:45:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:45:27,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061732768] [2020-10-29 07:45:27,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:27,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:27,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664070078] [2020-10-29 07:45:27,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:45:27,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:27,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:45:27,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:45:27,658 INFO L87 Difference]: Start difference. First operand 2614 states and 3284 transitions. Second operand 8 states. [2020-10-29 07:45:45,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:45,258 INFO L93 Difference]: Finished difference Result 6899 states and 9101 transitions. [2020-10-29 07:45:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:45:45,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 289 [2020-10-29 07:45:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:45,284 INFO L225 Difference]: With dead ends: 6899 [2020-10-29 07:45:45,284 INFO L226 Difference]: Without dead ends: 4598 [2020-10-29 07:45:45,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:45:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4598 states. [2020-10-29 07:45:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4598 to 4546. [2020-10-29 07:45:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4546 states. [2020-10-29 07:45:45,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4546 states to 4546 states and 5513 transitions. [2020-10-29 07:45:45,433 INFO L78 Accepts]: Start accepts. Automaton has 4546 states and 5513 transitions. Word has length 289 [2020-10-29 07:45:45,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:45,434 INFO L481 AbstractCegarLoop]: Abstraction has 4546 states and 5513 transitions. [2020-10-29 07:45:45,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:45:45,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4546 states and 5513 transitions. [2020-10-29 07:45:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-29 07:45:45,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:45,442 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:45,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:45:45,443 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:45,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1364912868, now seen corresponding path program 1 times [2020-10-29 07:45:45,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:45,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007265900] [2020-10-29 07:45:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:45,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:46,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:46,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:50,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:50,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-29 07:45:50,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:45:50,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:45:50,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:50,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:45:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:45:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 317 [2020-10-29 07:45:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:50,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:50,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:50,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:50,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:45:50,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:50,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:45:50,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:51,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:51,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:45:51,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-29 07:45:51,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:51,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 07:45:51,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:52,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:45:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:52,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:52,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:45:52,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 07:45:52,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:52,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:45:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:45:53,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007265900] [2020-10-29 07:45:53,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:53,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:53,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022299477] [2020-10-29 07:45:53,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:45:53,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:53,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:45:53,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:45:53,137 INFO L87 Difference]: Start difference. First operand 4546 states and 5513 transitions. Second operand 8 states. [2020-10-29 07:46:07,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:07,767 INFO L93 Difference]: Finished difference Result 9838 states and 12351 transitions. [2020-10-29 07:46:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:46:07,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 361 [2020-10-29 07:46:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:07,799 INFO L225 Difference]: With dead ends: 9838 [2020-10-29 07:46:07,800 INFO L226 Difference]: Without dead ends: 5922 [2020-10-29 07:46:07,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:46:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2020-10-29 07:46:08,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5809. [2020-10-29 07:46:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5809 states. [2020-10-29 07:46:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5809 states to 5809 states and 6893 transitions. [2020-10-29 07:46:08,017 INFO L78 Accepts]: Start accepts. Automaton has 5809 states and 6893 transitions. Word has length 361 [2020-10-29 07:46:08,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:08,018 INFO L481 AbstractCegarLoop]: Abstraction has 5809 states and 6893 transitions. [2020-10-29 07:46:08,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:46:08,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5809 states and 6893 transitions. [2020-10-29 07:46:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-29 07:46:08,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:08,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:08,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:46:08,028 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1517982135, now seen corresponding path program 1 times [2020-10-29 07:46:08,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:08,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745411046] [2020-10-29 07:46:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:13,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:13,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-29 07:46:13,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:46:13,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 07:46:13,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:13,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:46:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:46:13,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:13,479 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:46:13,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:13,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:13,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:13,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:13,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:13,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:46:13,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:13,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:13,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:13,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:13,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:13,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:13,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:13,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:13,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:13,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:46:13,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:13,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 07:46:13,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:13,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:13,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:46:13,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:14,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:46:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:14,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:14,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:46:14,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 07:46:14,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:14,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:46:14,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:46:14,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745411046] [2020-10-29 07:46:14,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:14,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:14,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781786735] [2020-10-29 07:46:14,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:14,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:14,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:14,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:14,580 INFO L87 Difference]: Start difference. First operand 5809 states and 6893 transitions. Second operand 7 states. [2020-10-29 07:46:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:30,560 INFO L93 Difference]: Finished difference Result 13599 states and 16323 transitions. [2020-10-29 07:46:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:46:30,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 395 [2020-10-29 07:46:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:30,603 INFO L225 Difference]: With dead ends: 13599 [2020-10-29 07:46:30,604 INFO L226 Difference]: Without dead ends: 8103 [2020-10-29 07:46:30,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:46:30,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8103 states. [2020-10-29 07:46:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8103 to 8018. [2020-10-29 07:46:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8018 states. [2020-10-29 07:46:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 9288 transitions. [2020-10-29 07:46:30,859 INFO L78 Accepts]: Start accepts. Automaton has 8018 states and 9288 transitions. Word has length 395 [2020-10-29 07:46:30,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:30,861 INFO L481 AbstractCegarLoop]: Abstraction has 8018 states and 9288 transitions. [2020-10-29 07:46:30,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:30,861 INFO L276 IsEmpty]: Start isEmpty. Operand 8018 states and 9288 transitions. [2020-10-29 07:46:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-29 07:46:30,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:30,873 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:30,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:46:30,874 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:30,874 INFO L82 PathProgramCache]: Analyzing trace with hash 161621441, now seen corresponding path program 1 times [2020-10-29 07:46:30,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:30,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541306095] [2020-10-29 07:46:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:34,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:34,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-29 07:46:34,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:46:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3133 [2020-10-29 07:46:34,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:34,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:46:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:46:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:46:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:34,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:34,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:34,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:34,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:34,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:46:34,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:34,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:34,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:34,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:34,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:34,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:46:34,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-29 07:46:34,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:34,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:46:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:46:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:35,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:35,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:35,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:46:35,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:35,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 07:46:35,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:35,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:46:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:46:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:46:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 122 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:46:35,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541306095] [2020-10-29 07:46:35,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:35,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:46:35,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017847692] [2020-10-29 07:46:35,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:46:35,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:35,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:46:35,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:46:35,573 INFO L87 Difference]: Start difference. First operand 8018 states and 9288 transitions. Second operand 8 states. [2020-10-29 07:46:38,348 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 07:46:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:58,198 INFO L93 Difference]: Finished difference Result 19014 states and 22983 transitions. [2020-10-29 07:46:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:46:58,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 407 [2020-10-29 07:46:58,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:58,252 INFO L225 Difference]: With dead ends: 19014 [2020-10-29 07:46:58,252 INFO L226 Difference]: Without dead ends: 11853 [2020-10-29 07:46:58,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:46:58,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11853 states. [2020-10-29 07:46:58,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11853 to 11797. [2020-10-29 07:46:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11797 states. [2020-10-29 07:46:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11797 states to 11797 states and 14105 transitions. [2020-10-29 07:46:58,661 INFO L78 Accepts]: Start accepts. Automaton has 11797 states and 14105 transitions. Word has length 407 [2020-10-29 07:46:58,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:58,662 INFO L481 AbstractCegarLoop]: Abstraction has 11797 states and 14105 transitions. [2020-10-29 07:46:58,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:46:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 11797 states and 14105 transitions. [2020-10-29 07:46:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-29 07:46:58,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:58,677 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:58,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:46:58,678 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1354908389, now seen corresponding path program 1 times [2020-10-29 07:46:58,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:58,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281634559] [2020-10-29 07:46:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:59,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:01,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:01,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-29 07:47:01,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:47:01,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2680 [2020-10-29 07:47:01,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:01,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:01,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:01,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:47:01,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:47:01,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:01,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:01,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:01,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:01,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:01,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:47:01,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:01,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:01,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:01,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:02,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:02,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:47:02,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:02,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 07:47:02,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:02,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:47:02,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:47:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:02,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:02,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:02,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:47:02,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 07:47:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:02,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:47:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:47:02,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281634559] [2020-10-29 07:47:02,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:02,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:02,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611276727] [2020-10-29 07:47:02,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:02,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:02,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:02,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:02,466 INFO L87 Difference]: Start difference. First operand 11797 states and 14105 transitions. Second operand 7 states. [2020-10-29 07:47:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:15,595 INFO L93 Difference]: Finished difference Result 25882 states and 31656 transitions. [2020-10-29 07:47:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:47:15,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-29 07:47:15,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:15,646 INFO L225 Difference]: With dead ends: 25882 [2020-10-29 07:47:15,646 INFO L226 Difference]: Without dead ends: 14398 [2020-10-29 07:47:15,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:47:15,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14398 states. [2020-10-29 07:47:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14398 to 14340. [2020-10-29 07:47:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14340 states. [2020-10-29 07:47:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14340 states to 14340 states and 17211 transitions. [2020-10-29 07:47:16,024 INFO L78 Accepts]: Start accepts. Automaton has 14340 states and 17211 transitions. Word has length 418 [2020-10-29 07:47:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:16,025 INFO L481 AbstractCegarLoop]: Abstraction has 14340 states and 17211 transitions. [2020-10-29 07:47:16,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 14340 states and 17211 transitions. [2020-10-29 07:47:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-29 07:47:16,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:16,030 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:16,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:47:16,030 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:16,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:16,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1794523704, now seen corresponding path program 1 times [2020-10-29 07:47:16,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:16,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602536409] [2020-10-29 07:47:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:16,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:17,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:17,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-29 07:47:17,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:17,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-29 07:47:17,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:17,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:47:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 07:47:17,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:17,370 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:47:17,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:17,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:17,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:17,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:17,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:47:17,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:17,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:17,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:17,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:17,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:17,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:17,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:47:17,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:47:17,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:17,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:17,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:17,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:47:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:17,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:17,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:17,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:17,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:17,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:47:17,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:17,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:47:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:47:17,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602536409] [2020-10-29 07:47:17,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:17,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:47:17,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626973495] [2020-10-29 07:47:17,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:47:17,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:17,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:47:17,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:47:17,983 INFO L87 Difference]: Start difference. First operand 14340 states and 17211 transitions. Second operand 5 states. [2020-10-29 07:47:28,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:28,301 INFO L93 Difference]: Finished difference Result 26320 states and 33321 transitions. [2020-10-29 07:47:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:47:28,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 449 [2020-10-29 07:47:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:28,364 INFO L225 Difference]: With dead ends: 26320 [2020-10-29 07:47:28,365 INFO L226 Difference]: Without dead ends: 17272 [2020-10-29 07:47:28,390 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 [2020-10-29 07:47:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17272 states. [2020-10-29 07:47:28,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17272 to 17237. [2020-10-29 07:47:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17237 states. [2020-10-29 07:47:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17237 states to 17237 states and 21527 transitions. [2020-10-29 07:47:28,761 INFO L78 Accepts]: Start accepts. Automaton has 17237 states and 21527 transitions. Word has length 449 [2020-10-29 07:47:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:28,762 INFO L481 AbstractCegarLoop]: Abstraction has 17237 states and 21527 transitions. [2020-10-29 07:47:28,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:47:28,762 INFO L276 IsEmpty]: Start isEmpty. Operand 17237 states and 21527 transitions. [2020-10-29 07:47:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-29 07:47:28,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:28,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:28,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:47:28,768 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:28,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:28,769 INFO L82 PathProgramCache]: Analyzing trace with hash 234454050, now seen corresponding path program 1 times [2020-10-29 07:47:28,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:28,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165907193] [2020-10-29 07:47:28,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:32,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:32,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-29 07:47:32,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:47:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3471 [2020-10-29 07:47:32,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:32,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 07:47:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:47:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 490 [2020-10-29 07:47:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:32,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:32,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:32,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:32,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:32,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:47:32,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:32,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:47:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:33,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:33,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:47:33,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:33,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-29 07:47:33,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:33,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 07:47:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:33,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:47:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:33,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:33,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 07:47:33,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:33,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 07:47:33,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:33,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:33,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:47:33,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:33,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:47:33,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:47:34,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165907193] [2020-10-29 07:47:34,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:34,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:47:34,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312167917] [2020-10-29 07:47:34,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:47:34,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:34,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:47:34,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:47:34,181 INFO L87 Difference]: Start difference. First operand 17237 states and 21527 transitions. Second operand 9 states. [2020-10-29 07:47:34,402 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 65