/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:27:59,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:27:59,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:27:59,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:27:59,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:27:59,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:27:59,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:27:59,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:27:59,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:27:59,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:27:59,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:27:59,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:27:59,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:27:59,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:27:59,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:27:59,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:27:59,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:27:59,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:27:59,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:27:59,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:27:59,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:27:59,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:27:59,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:27:59,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:27:59,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:27:59,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:27:59,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:27:59,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:27:59,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:27:59,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:27:59,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:27:59,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:27:59,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:27:59,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:27:59,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:27:59,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:27:59,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:27:59,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:27:59,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:27:59,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:27:59,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:27:59,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:27:59,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:27:59,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:27:59,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:27:59,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:27:59,715 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:27:59,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:27:59,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:27:59,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:27:59,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:27:59,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:27:59,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:27:59,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:27:59,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:27:59,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:27:59,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:27:59,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:27:59,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:27:59,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:27:59,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:27:59,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:27:59,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:27:59,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:27:59,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:27:59,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:27:59,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:27:59,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:27:59,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:27:59,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:27:59,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:27:59,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:28:00,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:28:00,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:28:00,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:28:00,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:28:00,246 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:28:00,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2020-10-28 12:28:00,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64bf1f5c6/3effb8d8d647412fbbbc8888228f3f9b/FLAGb43224e2f [2020-10-28 12:28:01,566 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:28:01,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2020-10-28 12:28:01,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64bf1f5c6/3effb8d8d647412fbbbc8888228f3f9b/FLAGb43224e2f [2020-10-28 12:28:01,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64bf1f5c6/3effb8d8d647412fbbbc8888228f3f9b [2020-10-28 12:28:01,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:28:01,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:28:01,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:28:01,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:28:01,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:28:01,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:28:01" (1/1) ... [2020-10-28 12:28:01,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629e5455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:01, skipping insertion in model container [2020-10-28 12:28:01,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:28:01" (1/1) ... [2020-10-28 12:28:01,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:28:02,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:28:03,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:28:03,932 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:28:04,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:28:04,834 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:28:04,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:04 WrapperNode [2020-10-28 12:28:04,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:28:04,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:28:04,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:28:04,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:28:04,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:04" (1/1) ... [2020-10-28 12:28:04,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:04" (1/1) ... [2020-10-28 12:28:04,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:04" (1/1) ... [2020-10-28 12:28:04,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:04" (1/1) ... [2020-10-28 12:28:05,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:04" (1/1) ... [2020-10-28 12:28:05,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:04" (1/1) ... [2020-10-28 12:28:05,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:04" (1/1) ... [2020-10-28 12:28:05,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:28:05,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:28:05,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:28:05,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:28:05,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:28:05,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:28:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:28:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:28:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:28:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:28:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:28:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:28:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:28:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:28:05,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:28:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:28:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:28:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:28:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:28:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:28:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:28:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:28:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:28:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:28:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:28:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:28:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:28:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:28:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:28:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:28:11,889 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:28:11,890 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:28:11,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:28:11 BoogieIcfgContainer [2020-10-28 12:28:11,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:28:11,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:28:11,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:28:11,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:28:11,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:28:01" (1/3) ... [2020-10-28 12:28:11,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4657b314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:28:11, skipping insertion in model container [2020-10-28 12:28:11,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:28:04" (2/3) ... [2020-10-28 12:28:11,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4657b314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:28:11, skipping insertion in model container [2020-10-28 12:28:11,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:28:11" (3/3) ... [2020-10-28 12:28:11,910 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label57.c [2020-10-28 12:28:11,928 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:28:11,935 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:28:11,949 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:28:11,999 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:28:11,999 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:28:11,999 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:28:11,999 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:28:11,999 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:28:11,999 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:28:12,000 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:28:12,000 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:28:12,039 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:28:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 12:28:12,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:12,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:28:12,049 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:12,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:12,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1116299020, now seen corresponding path program 1 times [2020-10-28 12:28:12,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:12,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154313863] [2020-10-28 12:28:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:12,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:12,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:12,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 12:28:12,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-28 12:28:12,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:12,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:12,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:28:12,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 12:28:12,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:28:13,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:13,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:13,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:13,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:13,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:13,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:28:13,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:13,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:28:13,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:28:13,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154313863] [2020-10-28 12:28:13,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:28:13,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:28:13,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850405669] [2020-10-28 12:28:13,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:28:13,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:13,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:28:13,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:28:13,263 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:28:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:31,138 INFO L93 Difference]: Finished difference Result 3258 states and 6299 transitions. [2020-10-28 12:28:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:28:31,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-28 12:28:31,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:31,191 INFO L225 Difference]: With dead ends: 3258 [2020-10-28 12:28:31,191 INFO L226 Difference]: Without dead ends: 2347 [2020-10-28 12:28:31,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:31,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-28 12:28:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-28 12:28:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-28 12:28:31,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3835 transitions. [2020-10-28 12:28:31,434 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3835 transitions. Word has length 44 [2020-10-28 12:28:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:31,436 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3835 transitions. [2020-10-28 12:28:31,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:28:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3835 transitions. [2020-10-28 12:28:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 12:28:31,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:31,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:28:31,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:28:31,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:31,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:31,455 INFO L82 PathProgramCache]: Analyzing trace with hash 867736368, now seen corresponding path program 1 times [2020-10-28 12:28:31,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:31,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999642232] [2020-10-28 12:28:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:31,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:31,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:32,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:32,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:28:32,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:28:32,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-10-28 12:28:32,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:32,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:28:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:28:32,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:28:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:32,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:32,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:32,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:32,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:32,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:28:32,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:32,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:28:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:28:32,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:33,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:33,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:33,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 12:28:33,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 12:28:33,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:33,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:28:33,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:28:33,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999642232] [2020-10-28 12:28:33,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:28:33,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:28:33,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853179984] [2020-10-28 12:28:33,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:28:33,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:33,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:28:33,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:33,327 INFO L87 Difference]: Start difference. First operand 2332 states and 3835 transitions. Second operand 7 states. [2020-10-28 12:28:47,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:47,272 INFO L93 Difference]: Finished difference Result 7214 states and 12292 transitions. [2020-10-28 12:28:47,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:28:47,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 12:28:47,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:47,311 INFO L225 Difference]: With dead ends: 7214 [2020-10-28 12:28:47,312 INFO L226 Difference]: Without dead ends: 4888 [2020-10-28 12:28:47,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:28:47,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4888 states. [2020-10-28 12:28:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4888 to 4747. [2020-10-28 12:28:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4747 states. [2020-10-28 12:28:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4747 states to 4747 states and 6761 transitions. [2020-10-28 12:28:47,549 INFO L78 Accepts]: Start accepts. Automaton has 4747 states and 6761 transitions. Word has length 122 [2020-10-28 12:28:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:47,552 INFO L481 AbstractCegarLoop]: Abstraction has 4747 states and 6761 transitions. [2020-10-28 12:28:47,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:28:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4747 states and 6761 transitions. [2020-10-28 12:28:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 12:28:47,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:47,563 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:28:47,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:28:47,564 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:47,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:47,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2103854830, now seen corresponding path program 1 times [2020-10-28 12:28:47,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:47,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525689311] [2020-10-28 12:28:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:48,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:48,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 12:28:48,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:28:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-10-28 12:28:48,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:48,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:28:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:28:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:48,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:48,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:48,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:48,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:48,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:28:48,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:48,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:48,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:48,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:28:48,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:49,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:49,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 12:28:49,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 12:28:49,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:49,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:28:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:28:49,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525689311] [2020-10-28 12:28:49,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:28:49,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:28:49,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66168823] [2020-10-28 12:28:49,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:28:49,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:49,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:28:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:49,228 INFO L87 Difference]: Start difference. First operand 4747 states and 6761 transitions. Second operand 7 states. [2020-10-28 12:29:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:04,469 INFO L93 Difference]: Finished difference Result 14693 states and 21789 transitions. [2020-10-28 12:29:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:29:04,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-28 12:29:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:04,529 INFO L225 Difference]: With dead ends: 14693 [2020-10-28 12:29:04,529 INFO L226 Difference]: Without dead ends: 9952 [2020-10-28 12:29:04,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:29:04,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9952 states. [2020-10-28 12:29:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9952 to 9769. [2020-10-28 12:29:04,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9769 states. [2020-10-28 12:29:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 13022 transitions. [2020-10-28 12:29:04,927 INFO L78 Accepts]: Start accepts. Automaton has 9769 states and 13022 transitions. Word has length 147 [2020-10-28 12:29:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:04,929 INFO L481 AbstractCegarLoop]: Abstraction has 9769 states and 13022 transitions. [2020-10-28 12:29:04,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:29:04,930 INFO L276 IsEmpty]: Start isEmpty. Operand 9769 states and 13022 transitions. [2020-10-28 12:29:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-28 12:29:04,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:04,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:29:04,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:29:04,935 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:04,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1996806058, now seen corresponding path program 1 times [2020-10-28 12:29:04,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:04,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335637151] [2020-10-28 12:29:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:05,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:08,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:08,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-28 12:29:08,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:29:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3229 [2020-10-28 12:29:08,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:08,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:29:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:29:08,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:08,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:08,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:08,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:08,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:08,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:08,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:29:08,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:08,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:08,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:08,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:08,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:08,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:08,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:29:08,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:08,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:29:08,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:08,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:29:08,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:29:08,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:29:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:08,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:08,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:08,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:29:08,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:08,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:29:08,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:08,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:29:08,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:29:08,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:29:08,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335637151] [2020-10-28 12:29:08,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:08,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:29:08,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323400641] [2020-10-28 12:29:08,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:29:08,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:08,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:29:08,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:29:08,830 INFO L87 Difference]: Start difference. First operand 9769 states and 13022 transitions. Second operand 7 states. [2020-10-28 12:29:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:24,558 INFO L93 Difference]: Finished difference Result 29268 states and 40762 transitions. [2020-10-28 12:29:24,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:29:24,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-10-28 12:29:24,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:24,678 INFO L225 Difference]: With dead ends: 29268 [2020-10-28 12:29:24,678 INFO L226 Difference]: Without dead ends: 19505 [2020-10-28 12:29:24,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:29:24,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19505 states. [2020-10-28 12:29:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19505 to 17100. [2020-10-28 12:29:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17100 states. [2020-10-28 12:29:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17100 states to 17100 states and 22543 transitions. [2020-10-28 12:29:25,491 INFO L78 Accepts]: Start accepts. Automaton has 17100 states and 22543 transitions. Word has length 199 [2020-10-28 12:29:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:25,493 INFO L481 AbstractCegarLoop]: Abstraction has 17100 states and 22543 transitions. [2020-10-28 12:29:25,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:29:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 17100 states and 22543 transitions. [2020-10-28 12:29:25,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-28 12:29:25,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:25,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:29:25,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:29:25,501 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:25,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:25,502 INFO L82 PathProgramCache]: Analyzing trace with hash 445499090, now seen corresponding path program 1 times [2020-10-28 12:29:25,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:25,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027878607] [2020-10-28 12:29:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:25,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:27,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:27,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-28 12:29:27,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:29:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1565 [2020-10-28 12:29:27,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:27,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:29:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:29:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:27,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:27,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:27,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:27,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:27,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:29:27,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:27,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:27,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:27,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:27,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:27,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:29:27,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:27,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:29:27,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:27,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:29:27,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:29:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:27,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:27,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:27,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 12:29:27,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-28 12:29:27,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:27,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:29:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:29:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:29:27,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027878607] [2020-10-28 12:29:27,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:27,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:29:27,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010316967] [2020-10-28 12:29:27,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:29:27,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:27,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:29:27,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:29:27,878 INFO L87 Difference]: Start difference. First operand 17100 states and 22543 transitions. Second operand 8 states. [2020-10-28 12:29:53,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:53,985 INFO L93 Difference]: Finished difference Result 50068 states and 69884 transitions. [2020-10-28 12:29:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:29:53,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-10-28 12:29:53,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:54,113 INFO L225 Difference]: With dead ends: 50068 [2020-10-28 12:29:54,113 INFO L226 Difference]: Without dead ends: 28072 [2020-10-28 12:29:54,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:29:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28072 states. [2020-10-28 12:29:54,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28072 to 28025. [2020-10-28 12:29:54,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28025 states. [2020-10-28 12:29:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28025 states to 28025 states and 34847 transitions. [2020-10-28 12:29:55,074 INFO L78 Accepts]: Start accepts. Automaton has 28025 states and 34847 transitions. Word has length 243 [2020-10-28 12:29:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:55,075 INFO L481 AbstractCegarLoop]: Abstraction has 28025 states and 34847 transitions. [2020-10-28 12:29:55,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:29:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 28025 states and 34847 transitions. [2020-10-28 12:29:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-28 12:29:55,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:55,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:29:55,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:29:55,084 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:55,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:55,085 INFO L82 PathProgramCache]: Analyzing trace with hash 2041281480, now seen corresponding path program 1 times [2020-10-28 12:29:55,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:55,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194126461] [2020-10-28 12:29:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:55,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:55,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:57,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-28 12:29:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:29:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1853 [2020-10-28 12:29:57,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:57,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:29:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:29:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:57,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:57,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:57,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:57,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:29:57,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:57,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:57,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:57,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:57,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:29:57,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:57,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:29:57,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:57,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:29:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:29:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:57,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:57,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 12:29:57,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:57,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 12:29:57,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:57,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:29:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:29:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:29:57,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194126461] [2020-10-28 12:29:57,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:58,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:29:58,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145125996] [2020-10-28 12:29:58,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:29:58,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:58,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:29:58,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:29:58,002 INFO L87 Difference]: Start difference. First operand 28025 states and 34847 transitions. Second operand 7 states. [2020-10-28 12:30:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:20,376 INFO L93 Difference]: Finished difference Result 79282 states and 101664 transitions. [2020-10-28 12:30:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:30:20,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-28 12:30:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:20,599 INFO L225 Difference]: With dead ends: 79282 [2020-10-28 12:30:20,599 INFO L226 Difference]: Without dead ends: 51263 [2020-10-28 12:30:20,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:30:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51263 states. [2020-10-28 12:30:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51263 to 49663. [2020-10-28 12:30:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49663 states. [2020-10-28 12:30:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49663 states to 49663 states and 62597 transitions. [2020-10-28 12:30:22,105 INFO L78 Accepts]: Start accepts. Automaton has 49663 states and 62597 transitions. Word has length 304 [2020-10-28 12:30:22,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:22,106 INFO L481 AbstractCegarLoop]: Abstraction has 49663 states and 62597 transitions. [2020-10-28 12:30:22,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:30:22,107 INFO L276 IsEmpty]: Start isEmpty. Operand 49663 states and 62597 transitions. [2020-10-28 12:30:22,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-28 12:30:22,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:22,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:30:22,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:30:22,134 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:22,135 INFO L82 PathProgramCache]: Analyzing trace with hash 953930992, now seen corresponding path program 1 times [2020-10-28 12:30:22,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:22,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571614998] [2020-10-28 12:30:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:22,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:27,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:27,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-28 12:30:27,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:30:27,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 12:30:27,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:27,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-28 12:30:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 12:30:27,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:30:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:27,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:27,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:27,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:30:27,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:27,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:30:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:30:27,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:27,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:30:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:27,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:27,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:30:27,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:27,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:30:27,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:27,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:27,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:30:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:27,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:30:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:28,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:28,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 12:30:28,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:28,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-28 12:30:28,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:28,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:30:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-28 12:30:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:30:28,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571614998] [2020-10-28 12:30:28,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:30:28,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:30:28,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881893737] [2020-10-28 12:30:28,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:30:28,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:30:28,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:30:28,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:30:28,353 INFO L87 Difference]: Start difference. First operand 49663 states and 62597 transitions. Second operand 7 states. [2020-10-28 12:30:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:47,456 INFO L93 Difference]: Finished difference Result 120897 states and 158230 transitions. [2020-10-28 12:30:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:30:47,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-10-28 12:30:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:48,055 INFO L225 Difference]: With dead ends: 120897 [2020-10-28 12:30:48,055 INFO L226 Difference]: Without dead ends: 71240 [2020-10-28 12:30:48,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:30:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71240 states. [2020-10-28 12:30:50,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71240 to 71112. [2020-10-28 12:30:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71112 states. [2020-10-28 12:30:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71112 states to 71112 states and 90744 transitions. [2020-10-28 12:30:50,633 INFO L78 Accepts]: Start accepts. Automaton has 71112 states and 90744 transitions. Word has length 346 [2020-10-28 12:30:50,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:50,634 INFO L481 AbstractCegarLoop]: Abstraction has 71112 states and 90744 transitions. [2020-10-28 12:30:50,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:30:50,634 INFO L276 IsEmpty]: Start isEmpty. Operand 71112 states and 90744 transitions. [2020-10-28 12:30:50,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-28 12:30:50,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:50,651 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:30:50,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:30:50,651 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:50,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:50,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1287487592, now seen corresponding path program 1 times [2020-10-28 12:30:50,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:50,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830925334] [2020-10-28 12:30:50,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:50,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:51,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:55,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:55,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-28 12:30:55,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:30:55,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 12:30:55,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:55,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:30:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:30:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 12:30:55,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:55,977 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:30:55,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:55,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:55,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:55,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:55,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:55,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:30:55,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:55,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:55,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:30:55,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:30:55,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:30:56,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:30:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:56,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:56,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:56,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:30:56,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 12:30:56,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:56,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:30:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:30:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:56,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:56,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:56,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:56,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:30:56,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:30:56,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 12:30:56,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:56,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:30:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:56,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-28 12:30:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:56,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:56,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:56,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 12:30:56,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:56,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:30:56,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:56,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:30:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:30:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 258 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-28 12:30:57,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830925334] [2020-10-28 12:30:57,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:30:57,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:30:57,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704257152] [2020-10-28 12:30:57,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:30:57,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:30:57,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:30:57,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:30:57,041 INFO L87 Difference]: Start difference. First operand 71112 states and 90744 transitions. Second operand 8 states. [2020-10-28 12:30:57,209 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:31:25,549 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:31:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:31:27,980 INFO L93 Difference]: Finished difference Result 143584 states and 183963 transitions. [2020-10-28 12:31:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:31:27,984 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 360 [2020-10-28 12:31:27,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:31:28,470 INFO L225 Difference]: With dead ends: 143584 [2020-10-28 12:31:28,470 INFO L226 Difference]: Without dead ends: 72478 [2020-10-28 12:31:28,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:31:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72478 states. [2020-10-28 12:31:30,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72478 to 71545. [2020-10-28 12:31:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71545 states. [2020-10-28 12:31:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71545 states to 71545 states and 88218 transitions. [2020-10-28 12:31:30,858 INFO L78 Accepts]: Start accepts. Automaton has 71545 states and 88218 transitions. Word has length 360 [2020-10-28 12:31:30,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:31:30,859 INFO L481 AbstractCegarLoop]: Abstraction has 71545 states and 88218 transitions. [2020-10-28 12:31:30,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:31:30,860 INFO L276 IsEmpty]: Start isEmpty. Operand 71545 states and 88218 transitions. [2020-10-28 12:31:30,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-28 12:31:30,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:31:30,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:31:30,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:31:30,876 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:31:30,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:31:30,877 INFO L82 PathProgramCache]: Analyzing trace with hash -533200218, now seen corresponding path program 1 times [2020-10-28 12:31:30,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:31:30,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777395163] [2020-10-28 12:31:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:31:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:31,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:31,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:32,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking...