/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:41:52,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:41:52,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:41:52,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:41:52,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:41:52,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:41:52,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:41:52,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:41:52,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:41:52,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:41:52,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:41:52,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:41:52,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:41:52,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:41:52,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:41:52,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:41:52,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:41:52,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:41:52,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:41:52,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:41:52,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:41:52,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:41:52,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:41:52,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:41:52,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:41:52,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:41:52,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:41:52,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:41:52,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:41:52,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:41:52,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:41:52,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:41:52,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:41:52,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:41:52,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:41:52,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:41:52,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:41:52,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:41:52,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:41:52,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:41:52,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:41:52,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:41:52,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:41:52,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:41:53,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:41:53,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:41:53,001 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:41:53,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:41:53,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:41:53,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:41:53,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:41:53,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:41:53,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:41:53,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:41:53,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:41:53,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:41:53,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:41:53,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:41:53,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:41:53,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:41:53,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:41:53,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:41:53,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:41:53,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:41:53,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:41:53,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:41:53,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:41:53,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:41:53,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:41:53,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:41:53,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:41:53,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:41:53,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:41:53,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:41:53,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:41:53,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:41:53,504 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:41:53,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label46.c [2020-10-28 13:41:53,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4edd5cd0/91be82172b024475a16ed1fab96bd2aa/FLAG61ee0698f [2020-10-28 13:41:54,543 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:41:54,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label46.c [2020-10-28 13:41:54,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4edd5cd0/91be82172b024475a16ed1fab96bd2aa/FLAG61ee0698f [2020-10-28 13:41:54,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4edd5cd0/91be82172b024475a16ed1fab96bd2aa [2020-10-28 13:41:54,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:41:54,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:41:54,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:41:54,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:41:54,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:41:54,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:41:54" (1/1) ... [2020-10-28 13:41:54,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571e44c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:54, skipping insertion in model container [2020-10-28 13:41:54,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:41:54" (1/1) ... [2020-10-28 13:41:54,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:41:54,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:41:56,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:41:56,048 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:41:56,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:41:56,589 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:41:56,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:56 WrapperNode [2020-10-28 13:41:56,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:41:56,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:41:56,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:41:56,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:41:56,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:56" (1/1) ... [2020-10-28 13:41:56,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:56" (1/1) ... [2020-10-28 13:41:56,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:56" (1/1) ... [2020-10-28 13:41:56,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:56" (1/1) ... [2020-10-28 13:41:56,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:56" (1/1) ... [2020-10-28 13:41:56,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:56" (1/1) ... [2020-10-28 13:41:56,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:56" (1/1) ... [2020-10-28 13:41:56,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:41:56,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:41:56,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:41:56,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:41:56,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:41:57,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:41:57,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:41:57,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:41:57,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:41:57,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:41:57,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:41:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:41:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:41:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:41:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:41:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:41:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:41:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:41:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:41:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:41:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:41:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:41:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:41:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:41:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:41:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:42:06,870 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:42:06,871 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:42:06,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:42:06 BoogieIcfgContainer [2020-10-28 13:42:06,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:42:06,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:42:06,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:42:06,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:42:06,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:41:54" (1/3) ... [2020-10-28 13:42:06,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4447d5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:42:06, skipping insertion in model container [2020-10-28 13:42:06,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:41:56" (2/3) ... [2020-10-28 13:42:06,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4447d5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:42:06, skipping insertion in model container [2020-10-28 13:42:06,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:42:06" (3/3) ... [2020-10-28 13:42:06,902 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label46.c [2020-10-28 13:42:06,917 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:42:06,925 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:42:06,941 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:42:06,986 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:42:06,987 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:42:06,987 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:42:06,987 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:42:06,987 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:42:06,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:42:06,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:42:06,987 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:42:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:42:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 13:42:07,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:07,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:42:07,034 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:07,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:07,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1566239661, now seen corresponding path program 1 times [2020-10-28 13:42:07,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:07,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882911360] [2020-10-28 13:42:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:07,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:07,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 13:42:07,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:07,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-28 13:42:07,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:07,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:42:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:42:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 13:42:07,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:42:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:08,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:08,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:42:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:08,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:42:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:42:08,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882911360] [2020-10-28 13:42:08,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:42:08,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:42:08,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014786113] [2020-10-28 13:42:08,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:42:08,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:08,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:42:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:42:08,203 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:42:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:22,793 INFO L93 Difference]: Finished difference Result 1721 states and 3132 transitions. [2020-10-28 13:42:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:42:22,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-28 13:42:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:22,826 INFO L225 Difference]: With dead ends: 1721 [2020-10-28 13:42:22,827 INFO L226 Difference]: Without dead ends: 1035 [2020-10-28 13:42:22,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:42:22,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-10-28 13:42:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1009. [2020-10-28 13:42:22,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-28 13:42:22,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1706 transitions. [2020-10-28 13:42:22,993 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1706 transitions. Word has length 17 [2020-10-28 13:42:22,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:22,994 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1706 transitions. [2020-10-28 13:42:22,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:42:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1706 transitions. [2020-10-28 13:42:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 13:42:22,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:22,999 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:42:23,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:42:23,000 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:23,001 INFO L82 PathProgramCache]: Analyzing trace with hash 306424974, now seen corresponding path program 1 times [2020-10-28 13:42:23,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:23,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397231858] [2020-10-28 13:42:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:23,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:24,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:24,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:42:24,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:42:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-28 13:42:24,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:24,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:42:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:42:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:42:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:42:24,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:24,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:24,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:24,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:24,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:42:24,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:24,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:42:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:24,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:24,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:42:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-28 13:42:24,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:24,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:42:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:42:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:42:24,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397231858] [2020-10-28 13:42:24,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:42:24,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:42:24,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057612399] [2020-10-28 13:42:24,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:42:24,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:24,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:42:24,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:42:24,913 INFO L87 Difference]: Start difference. First operand 1009 states and 1706 transitions. Second operand 7 states. [2020-10-28 13:42:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:43,926 INFO L93 Difference]: Finished difference Result 3008 states and 5134 transitions. [2020-10-28 13:42:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:42:43,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-28 13:42:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:43,940 INFO L225 Difference]: With dead ends: 3008 [2020-10-28 13:42:43,941 INFO L226 Difference]: Without dead ends: 2005 [2020-10-28 13:42:43,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:42:43,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2020-10-28 13:42:44,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1952. [2020-10-28 13:42:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2020-10-28 13:42:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2893 transitions. [2020-10-28 13:42:44,073 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2893 transitions. Word has length 86 [2020-10-28 13:42:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:44,074 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 2893 transitions. [2020-10-28 13:42:44,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:42:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2893 transitions. [2020-10-28 13:42:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 13:42:44,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:44,088 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:42:44,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:42:44,089 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:44,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:44,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1992778686, now seen corresponding path program 1 times [2020-10-28 13:42:44,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:44,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036811629] [2020-10-28 13:42:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:44,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:45,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:45,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:42:45,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:42:45,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1094 [2020-10-28 13:42:45,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:45,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:42:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:42:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:42:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:45,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:45,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:45,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:45,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:42:45,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:45,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:42:45,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:45,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:45,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:42:45,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 13:42:45,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:45,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:42:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:42:45,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:42:45,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036811629] [2020-10-28 13:42:45,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:42:45,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:42:45,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572860380] [2020-10-28 13:42:45,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:42:45,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:45,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:42:45,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:42:45,788 INFO L87 Difference]: Start difference. First operand 1952 states and 2893 transitions. Second operand 7 states. [2020-10-28 13:43:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:01,898 INFO L93 Difference]: Finished difference Result 5816 states and 8756 transitions. [2020-10-28 13:43:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:43:01,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 13:43:01,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:01,934 INFO L225 Difference]: With dead ends: 5816 [2020-10-28 13:43:01,935 INFO L226 Difference]: Without dead ends: 3870 [2020-10-28 13:43:01,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:43:01,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2020-10-28 13:43:02,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 2881. [2020-10-28 13:43:02,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2881 states. [2020-10-28 13:43:02,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 3873 transitions. [2020-10-28 13:43:02,054 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 3873 transitions. Word has length 96 [2020-10-28 13:43:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:02,055 INFO L481 AbstractCegarLoop]: Abstraction has 2881 states and 3873 transitions. [2020-10-28 13:43:02,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:43:02,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 3873 transitions. [2020-10-28 13:43:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 13:43:02,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:02,059 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:43:02,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:43:02,059 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:02,060 INFO L82 PathProgramCache]: Analyzing trace with hash 587797487, now seen corresponding path program 1 times [2020-10-28 13:43:02,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:02,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016007475] [2020-10-28 13:43:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:02,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:02,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:04,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:04,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:43:04,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:43:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-28 13:43:04,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:04,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:43:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:43:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:43:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:04,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:04,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:04,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:04,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:43:04,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:04,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:04,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:04,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:43:04,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:04,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:43:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:43:04,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:04,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:04,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:43:04,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 13:43:04,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:04,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:43:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:43:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:43:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 73 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:43:04,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016007475] [2020-10-28 13:43:04,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:04,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:43:04,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886701887] [2020-10-28 13:43:04,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:43:04,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:04,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:43:04,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:43:04,906 INFO L87 Difference]: Start difference. First operand 2881 states and 3873 transitions. Second operand 6 states. [2020-10-28 13:43:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:22,467 INFO L93 Difference]: Finished difference Result 7632 states and 10486 transitions. [2020-10-28 13:43:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:43:22,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-10-28 13:43:22,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:22,499 INFO L225 Difference]: With dead ends: 7632 [2020-10-28 13:43:22,500 INFO L226 Difference]: Without dead ends: 3855 [2020-10-28 13:43:22,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:43:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2020-10-28 13:43:22,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3826. [2020-10-28 13:43:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3826 states. [2020-10-28 13:43:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 4918 transitions. [2020-10-28 13:43:22,653 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 4918 transitions. Word has length 173 [2020-10-28 13:43:22,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:22,656 INFO L481 AbstractCegarLoop]: Abstraction has 3826 states and 4918 transitions. [2020-10-28 13:43:22,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:43:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 4918 transitions. [2020-10-28 13:43:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 13:43:22,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:22,661 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:43:22,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:43:22,662 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:22,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:22,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1704427874, now seen corresponding path program 1 times [2020-10-28 13:43:22,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:22,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100246218] [2020-10-28 13:43:22,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:22,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:24,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:24,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 13:43:24,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:43:24,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-10-28 13:43:24,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:24,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:43:24,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:43:24,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:43:24,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:24,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:24,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:24,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:43:24,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:24,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:24,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:24,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:24,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:24,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:24,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:43:24,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:24,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:43:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:24,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:24,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:24,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:43:24,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:24,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 13:43:24,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:24,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:43:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:43:24,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:43:24,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100246218] [2020-10-28 13:43:24,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:24,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:43:24,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945269425] [2020-10-28 13:43:24,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:43:24,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:24,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:43:24,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:43:24,876 INFO L87 Difference]: Start difference. First operand 3826 states and 4918 transitions. Second operand 8 states. [2020-10-28 13:43:41,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:41,969 INFO L93 Difference]: Finished difference Result 10420 states and 13963 transitions. [2020-10-28 13:43:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:43:41,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-10-28 13:43:41,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:42,011 INFO L225 Difference]: With dead ends: 10420 [2020-10-28 13:43:42,011 INFO L226 Difference]: Without dead ends: 6600 [2020-10-28 13:43:42,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:43:42,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6600 states. [2020-10-28 13:43:42,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6600 to 6574. [2020-10-28 13:43:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6574 states. [2020-10-28 13:43:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6574 states to 6574 states and 8454 transitions. [2020-10-28 13:43:42,275 INFO L78 Accepts]: Start accepts. Automaton has 6574 states and 8454 transitions. Word has length 174 [2020-10-28 13:43:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:42,276 INFO L481 AbstractCegarLoop]: Abstraction has 6574 states and 8454 transitions. [2020-10-28 13:43:42,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:43:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6574 states and 8454 transitions. [2020-10-28 13:43:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 13:43:42,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:42,279 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:43:42,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:43:42,280 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:42,280 INFO L82 PathProgramCache]: Analyzing trace with hash -572106597, now seen corresponding path program 1 times [2020-10-28 13:43:42,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:42,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128767679] [2020-10-28 13:43:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:42,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:47,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:47,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-28 13:43:47,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:43:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4849 [2020-10-28 13:43:47,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:47,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:43:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 13:43:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:47,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:47,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:47,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:47,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:43:47,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:47,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:47,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:43:47,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:47,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:47,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:47,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:47,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:43:47,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:47,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:47,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:47,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:43:47,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 13:43:47,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:47,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:43:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:43:47,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128767679] [2020-10-28 13:43:47,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:47,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:43:47,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275036361] [2020-10-28 13:43:47,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:43:47,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:47,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:43:47,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:43:47,748 INFO L87 Difference]: Start difference. First operand 6574 states and 8454 transitions. Second operand 5 states. [2020-10-28 13:44:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:00,308 INFO L93 Difference]: Finished difference Result 18029 states and 23753 transitions. [2020-10-28 13:44:00,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:44:00,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-28 13:44:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:00,381 INFO L225 Difference]: With dead ends: 18029 [2020-10-28 13:44:00,381 INFO L226 Difference]: Without dead ends: 11460 [2020-10-28 13:44:00,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:44:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11460 states. [2020-10-28 13:44:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11460 to 11008. [2020-10-28 13:44:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11008 states. [2020-10-28 13:44:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11008 states to 11008 states and 13714 transitions. [2020-10-28 13:44:00,715 INFO L78 Accepts]: Start accepts. Automaton has 11008 states and 13714 transitions. Word has length 179 [2020-10-28 13:44:00,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:00,715 INFO L481 AbstractCegarLoop]: Abstraction has 11008 states and 13714 transitions. [2020-10-28 13:44:00,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:44:00,715 INFO L276 IsEmpty]: Start isEmpty. Operand 11008 states and 13714 transitions. [2020-10-28 13:44:00,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-28 13:44:00,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:00,718 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:44:00,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:44:00,719 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:00,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:00,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1815685915, now seen corresponding path program 1 times [2020-10-28 13:44:00,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:00,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138139052] [2020-10-28 13:44:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:01,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:05,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:05,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 13:44:05,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:44:05,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4920 [2020-10-28 13:44:05,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:05,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:05,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:44:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:44:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:44:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:05,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:05,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:05,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:05,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:44:05,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:05,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:05,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:05,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:05,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:05,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:06,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:06,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:44:06,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:44:06,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:06,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:44:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:44:06,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:44:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:06,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:06,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:06,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:44:06,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:44:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 13:44:06,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:06,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:44:06,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:44:06,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138139052] [2020-10-28 13:44:06,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:06,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:44:06,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52320225] [2020-10-28 13:44:06,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:44:06,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:06,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:44:06,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:44:06,431 INFO L87 Difference]: Start difference. First operand 11008 states and 13714 transitions. Second operand 5 states. [2020-10-28 13:44:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:21,165 INFO L93 Difference]: Finished difference Result 22464 states and 28336 transitions. [2020-10-28 13:44:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:44:21,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-28 13:44:21,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:21,203 INFO L225 Difference]: With dead ends: 22464 [2020-10-28 13:44:21,203 INFO L226 Difference]: Without dead ends: 11462 [2020-10-28 13:44:21,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:44:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2020-10-28 13:44:21,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 11441. [2020-10-28 13:44:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11441 states. [2020-10-28 13:44:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11441 states to 11441 states and 14455 transitions. [2020-10-28 13:44:21,512 INFO L78 Accepts]: Start accepts. Automaton has 11441 states and 14455 transitions. Word has length 190 [2020-10-28 13:44:21,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:21,512 INFO L481 AbstractCegarLoop]: Abstraction has 11441 states and 14455 transitions. [2020-10-28 13:44:21,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:44:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 11441 states and 14455 transitions. [2020-10-28 13:44:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-28 13:44:21,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:21,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:44:21,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:44:21,520 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:21,521 INFO L82 PathProgramCache]: Analyzing trace with hash 960350644, now seen corresponding path program 1 times [2020-10-28 13:44:21,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:21,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248237109] [2020-10-28 13:44:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:25,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:25,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-28 13:44:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:44:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3820 [2020-10-28 13:44:25,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:25,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:44:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 13:44:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:25,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:25,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:25,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:25,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:25,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:25,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:44:25,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:25,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:25,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:25,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:25,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:25,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:44:25,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:44:25,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:25,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:25,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:25,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:44:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:25,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:25,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:25,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:44:25,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:25,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 13:44:25,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:25,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:44:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:44:26,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248237109] [2020-10-28 13:44:26,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:26,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:44:26,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364796334] [2020-10-28 13:44:26,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:44:26,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:26,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:44:26,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:44:26,220 INFO L87 Difference]: Start difference. First operand 11441 states and 14455 transitions. Second operand 5 states. [2020-10-28 13:44:29,924 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:44:47,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:47,468 INFO L93 Difference]: Finished difference Result 27822 states and 36064 transitions. [2020-10-28 13:44:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:44:47,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-28 13:44:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:47,621 INFO L225 Difference]: With dead ends: 27822 [2020-10-28 13:44:47,621 INFO L226 Difference]: Without dead ends: 15455 [2020-10-28 13:44:47,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:44:47,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15455 states. [2020-10-28 13:44:48,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15455 to 15434. [2020-10-28 13:44:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15434 states. [2020-10-28 13:44:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15434 states to 15434 states and 18986 transitions. [2020-10-28 13:44:48,066 INFO L78 Accepts]: Start accepts. Automaton has 15434 states and 18986 transitions. Word has length 245 [2020-10-28 13:44:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:48,067 INFO L481 AbstractCegarLoop]: Abstraction has 15434 states and 18986 transitions. [2020-10-28 13:44:48,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:44:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 15434 states and 18986 transitions. [2020-10-28 13:44:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-28 13:44:48,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:48,073 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:44:48,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:44:48,073 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:48,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:48,074 INFO L82 PathProgramCache]: Analyzing trace with hash 596968175, now seen corresponding path program 1 times [2020-10-28 13:44:48,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:48,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428026872] [2020-10-28 13:44:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:48,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:49,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:49,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:51,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:53,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:53,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-28 13:44:53,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:44:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 13:44:53,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:53,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:44:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:44:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:53,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:53,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:53,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:53,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:53,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:44:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:53,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:53,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:53,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:44:53,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:44:53,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:53,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:44:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:53,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:53,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:44:53,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:53,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:44:53,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:53,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:44:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:53,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-28 13:44:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:53,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:53,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:44:53,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:53,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 13:44:53,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:53,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:53,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:53,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:44:53,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:44:53,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-28 13:44:54,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428026872] [2020-10-28 13:44:54,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:54,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:44:54,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967207660] [2020-10-28 13:44:54,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:44:54,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:54,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:44:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:44:54,025 INFO L87 Difference]: Start difference. First operand 15434 states and 18986 transitions. Second operand 7 states. [2020-10-28 13:45:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:21,355 INFO L93 Difference]: Finished difference Result 36816 states and 46216 transitions. [2020-10-28 13:45:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:45:21,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-28 13:45:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:21,436 INFO L225 Difference]: With dead ends: 36816 [2020-10-28 13:45:21,436 INFO L226 Difference]: Without dead ends: 19990 [2020-10-28 13:45:21,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:45:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19990 states. [2020-10-28 13:45:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19990 to 18638. [2020-10-28 13:45:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18638 states. [2020-10-28 13:45:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18638 states to 18638 states and 23433 transitions. [2020-10-28 13:45:21,913 INFO L78 Accepts]: Start accepts. Automaton has 18638 states and 23433 transitions. Word has length 253 [2020-10-28 13:45:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:21,913 INFO L481 AbstractCegarLoop]: Abstraction has 18638 states and 23433 transitions. [2020-10-28 13:45:21,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:45:21,913 INFO L276 IsEmpty]: Start isEmpty. Operand 18638 states and 23433 transitions. [2020-10-28 13:45:21,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-28 13:45:21,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:21,921 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:45:21,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:45:21,922 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:21,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1599878972, now seen corresponding path program 1 times [2020-10-28 13:45:21,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:21,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113616447] [2020-10-28 13:45:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:22,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:22,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:25,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:26,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:26,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-28 13:45:26,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:45:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4441 [2020-10-28 13:45:26,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:26,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:45:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:45:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:45:26,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:26,617 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:45:26,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:26,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:26,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:26,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:26,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:45:26,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:26,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:26,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:26,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:45:26,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:26,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:45:26,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:26,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:26,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:26,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:26,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:26,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:45:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:26,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:26,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:45:26,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:26,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:45:26,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:26,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:45:26,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:45:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:26,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:27,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:27,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:45:27,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:45:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 13:45:27,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:27,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:27,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:27,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:45:27,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:45:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 187 proven. 10 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 13:45:27,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113616447] [2020-10-28 13:45:27,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:27,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:45:27,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176253198] [2020-10-28 13:45:27,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:45:27,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:27,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:45:27,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:45:27,233 INFO L87 Difference]: Start difference. First operand 18638 states and 23433 transitions. Second operand 7 states.