/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/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:19:08,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:19:08,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:19:08,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:19:08,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:19:08,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:19:08,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:19:08,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:19:08,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:19:08,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:19:08,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:19:08,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:19:08,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:19:08,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:19:08,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:19:08,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:19:08,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:19:08,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:19:08,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:19:08,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:19:08,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:19:08,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:19:08,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:19:08,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:19:08,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:19:08,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:19:08,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:19:08,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:19:08,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:19:08,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:19:08,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:19:08,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:19:08,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:19:08,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:19:08,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:19:08,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:19:08,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:19:08,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:19:08,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:19:08,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:19:08,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:19:08,913 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 19:19:08,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:19:08,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:19:08,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:19:08,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:19:08,978 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:19:08,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:19:08,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:19:08,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:19:08,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:19:08,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:19:08,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:19:08,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:19:08,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:19:08,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:19:08,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:19:08,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:19:08,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:19:08,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:19:08,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:19:08,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:19:08,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:19:08,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:19:08,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:19:08,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:19:08,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:19:08,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:19:08,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:19:08,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:19:08,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:19:08,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:19:09,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:19:09,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:19:09,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:19:09,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:19:09,477 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:19:09,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-28 19:19:09,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a77f1fb0/2be5da35d2cb42b7970af464f39ed976/FLAG2dba813ec [2020-10-28 19:19:10,355 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:19:10,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-28 19:19:10,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a77f1fb0/2be5da35d2cb42b7970af464f39ed976/FLAG2dba813ec [2020-10-28 19:19:10,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a77f1fb0/2be5da35d2cb42b7970af464f39ed976 [2020-10-28 19:19:10,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:19:10,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:19:10,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:19:10,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:19:10,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:19:10,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:19:10" (1/1) ... [2020-10-28 19:19:10,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2955b2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:10, skipping insertion in model container [2020-10-28 19:19:10,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:19:10" (1/1) ... [2020-10-28 19:19:10,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:19:10,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:19:11,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:19:11,682 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:19:12,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:19:12,060 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:19:12,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:12 WrapperNode [2020-10-28 19:19:12,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:19:12,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:19:12,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:19:12,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:19:12,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:12" (1/1) ... [2020-10-28 19:19:12,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:12" (1/1) ... [2020-10-28 19:19:12,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:12" (1/1) ... [2020-10-28 19:19:12,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:12" (1/1) ... [2020-10-28 19:19:12,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:12" (1/1) ... [2020-10-28 19:19:12,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:12" (1/1) ... [2020-10-28 19:19:12,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:12" (1/1) ... [2020-10-28 19:19:12,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:19:12,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:19:12,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:19:12,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:19:12,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:12" (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 19:19:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:19:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:19:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:19:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:19:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:19:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:19:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:19:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:19:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:19:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:19:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:19:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:19:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:19:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:19:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:19:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:19:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:19:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:19:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 19:19:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:19:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:19:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:19:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:19:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:19:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:19:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:19:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:19:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:19:15,084 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:19:15,085 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:19:15,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:19:15 BoogieIcfgContainer [2020-10-28 19:19:15,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:19:15,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:19:15,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:19:15,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:19:15,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:19:10" (1/3) ... [2020-10-28 19:19:15,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb7d9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:19:15, skipping insertion in model container [2020-10-28 19:19:15,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:19:12" (2/3) ... [2020-10-28 19:19:15,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb7d9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:19:15, skipping insertion in model container [2020-10-28 19:19:15,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:19:15" (3/3) ... [2020-10-28 19:19:15,101 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-28 19:19:15,113 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:19:15,120 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:19:15,134 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:19:15,172 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:19:15,172 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:19:15,172 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:19:15,172 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:19:15,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:19:15,173 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:19:15,173 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:19:15,173 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:19:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states. [2020-10-28 19:19:15,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-28 19:19:15,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:15,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:15,239 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:15,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:15,252 INFO L82 PathProgramCache]: Analyzing trace with hash -181801496, now seen corresponding path program 1 times [2020-10-28 19:19:15,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:15,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824416110] [2020-10-28 19:19:15,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:17,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:18,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:19,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:19,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:21,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:21,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:21,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-28 19:19:21,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:19:21,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 19:19:21,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:21,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:19:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 19:19:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:19:22,583 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 19:19:22,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:22,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:22,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:22,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:22,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 19:19:22,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:22,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:19:22,855 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 19:19:22,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824416110] [2020-10-28 19:19:22,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:22,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:22,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294092653] [2020-10-28 19:19:22,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:22,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:22,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:22,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:22,888 INFO L87 Difference]: Start difference. First operand 680 states. Second operand 5 states. [2020-10-28 19:19:29,670 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-28 19:19:31,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:31,657 INFO L93 Difference]: Finished difference Result 1950 states and 3482 transitions. [2020-10-28 19:19:31,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:19:31,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-28 19:19:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:31,695 INFO L225 Difference]: With dead ends: 1950 [2020-10-28 19:19:31,696 INFO L226 Difference]: Without dead ends: 1295 [2020-10-28 19:19:31,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:19:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2020-10-28 19:19:31,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1256. [2020-10-28 19:19:31,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2020-10-28 19:19:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1961 transitions. [2020-10-28 19:19:31,898 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1961 transitions. Word has length 248 [2020-10-28 19:19:31,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:31,900 INFO L481 AbstractCegarLoop]: Abstraction has 1256 states and 1961 transitions. [2020-10-28 19:19:31,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:31,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1961 transitions. [2020-10-28 19:19:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-28 19:19:31,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:31,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:31,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:19:31,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:31,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:31,918 INFO L82 PathProgramCache]: Analyzing trace with hash -148260421, now seen corresponding path program 1 times [2020-10-28 19:19:31,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:31,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492338315] [2020-10-28 19:19:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:32,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:33,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:35,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:35,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:36,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:37,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:37,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 19:19:37,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 19:19:37,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:19:37,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:37,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:19:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 19:19:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-28 19:19:37,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:19:37,905 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 19:19:37,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:37,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:37,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:37,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:37,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 19:19:37,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:37,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:19:38,145 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 19:19:38,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492338315] [2020-10-28 19:19:38,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:38,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:19:38,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200570634] [2020-10-28 19:19:38,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:19:38,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:38,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:19:38,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:19:38,163 INFO L87 Difference]: Start difference. First operand 1256 states and 1961 transitions. Second operand 4 states. [2020-10-28 19:19:45,726 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2020-10-28 19:19:47,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:47,547 INFO L93 Difference]: Finished difference Result 3601 states and 5597 transitions. [2020-10-28 19:19:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:47,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 250 [2020-10-28 19:19:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:47,564 INFO L225 Difference]: With dead ends: 3601 [2020-10-28 19:19:47,564 INFO L226 Difference]: Without dead ends: 2444 [2020-10-28 19:19:47,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2020-10-28 19:19:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2405. [2020-10-28 19:19:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2405 states. [2020-10-28 19:19:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 3735 transitions. [2020-10-28 19:19:47,729 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 3735 transitions. Word has length 250 [2020-10-28 19:19:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:47,730 INFO L481 AbstractCegarLoop]: Abstraction has 2405 states and 3735 transitions. [2020-10-28 19:19:47,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:19:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 3735 transitions. [2020-10-28 19:19:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-28 19:19:47,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:47,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:47,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:19:47,741 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:47,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:47,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1931211904, now seen corresponding path program 1 times [2020-10-28 19:19:47,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:47,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002981396] [2020-10-28 19:19:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:52,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:52,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 19:19:52,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:19:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 19:19:52,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:52,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:19:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 19:19:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:19:53,825 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 19:19:53,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:53,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:53,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:53,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:53,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 19:19:53,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:53,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:53,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:54,002 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 19:19:54,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002981396] [2020-10-28 19:19:54,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:54,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:54,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063439575] [2020-10-28 19:19:54,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:54,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:54,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:54,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:54,005 INFO L87 Difference]: Start difference. First operand 2405 states and 3735 transitions. Second operand 5 states. [2020-10-28 19:19:59,129 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-28 19:20:01,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:20:01,104 INFO L93 Difference]: Finished difference Result 7053 states and 10927 transitions. [2020-10-28 19:20:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:20:01,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-28 19:20:01,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:20:01,131 INFO L225 Difference]: With dead ends: 7053 [2020-10-28 19:20:01,131 INFO L226 Difference]: Without dead ends: 4696 [2020-10-28 19:20:01,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:20:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2020-10-28 19:20:01,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4673. [2020-10-28 19:20:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-28 19:20:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7198 transitions. [2020-10-28 19:20:01,376 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7198 transitions. Word has length 250 [2020-10-28 19:20:01,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:01,376 INFO L481 AbstractCegarLoop]: Abstraction has 4673 states and 7198 transitions. [2020-10-28 19:20:01,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:20:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7198 transitions. [2020-10-28 19:20:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 19:20:01,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:01,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:01,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:20:01,389 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:01,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:01,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1487432133, now seen corresponding path program 1 times [2020-10-28 19:20:01,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:01,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111337873] [2020-10-28 19:20:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:01,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:01,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:02,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:02,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:03,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:06,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:06,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:06,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-28 19:20:06,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:20:06,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 19:20:06,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:06,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:20:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:20:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 19:20:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:07,318 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 19:20:07,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:20:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:07,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:07,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:07,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:20:07,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:20:07,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 19:20:07,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:07,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:20:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:20:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:20:07,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:07,500 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 19:20:07,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111337873] [2020-10-28 19:20:07,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:20:07,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:20:07,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179023974] [2020-10-28 19:20:07,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:20:07,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:20:07,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:20:07,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:20:07,502 INFO L87 Difference]: Start difference. First operand 4673 states and 7198 transitions. Second operand 5 states. [2020-10-28 19:20:13,954 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-28 19:20:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:20:16,340 INFO L93 Difference]: Finished difference Result 13443 states and 20600 transitions. [2020-10-28 19:20:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:20:16,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-28 19:20:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:20:16,387 INFO L225 Difference]: With dead ends: 13443 [2020-10-28 19:20:16,387 INFO L226 Difference]: Without dead ends: 9081 [2020-10-28 19:20:16,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:20:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2020-10-28 19:20:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 9027. [2020-10-28 19:20:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9027 states. [2020-10-28 19:20:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9027 states to 9027 states and 13796 transitions. [2020-10-28 19:20:16,923 INFO L78 Accepts]: Start accepts. Automaton has 9027 states and 13796 transitions. Word has length 252 [2020-10-28 19:20:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:16,923 INFO L481 AbstractCegarLoop]: Abstraction has 9027 states and 13796 transitions. [2020-10-28 19:20:16,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:20:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 9027 states and 13796 transitions. [2020-10-28 19:20:16,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-28 19:20:16,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:16,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:16,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:20:16,946 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:16,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:16,947 INFO L82 PathProgramCache]: Analyzing trace with hash 693768070, now seen corresponding path program 1 times [2020-10-28 19:20:16,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:16,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015903916] [2020-10-28 19:20:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:17,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:17,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:17,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:18,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:18,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:19,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:22,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:22,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-28 19:20:22,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:20:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 19:20:22,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:22,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:20:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:20:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 19:20:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:20:22,876 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 19:20:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:20:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:22,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:20:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:20:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:20:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:22,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:20:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:20:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:20:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:23,004 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 19:20:23,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015903916] [2020-10-28 19:20:23,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:20:23,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:20:23,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60790083] [2020-10-28 19:20:23,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:20:23,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:20:23,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:20:23,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:20:23,007 INFO L87 Difference]: Start difference. First operand 9027 states and 13796 transitions. Second operand 5 states. [2020-10-28 19:20:28,568 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-28 19:20:30,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:20:30,679 INFO L93 Difference]: Finished difference Result 26367 states and 40167 transitions. [2020-10-28 19:20:30,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:20:30,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-28 19:20:30,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:20:30,737 INFO L225 Difference]: With dead ends: 26367 [2020-10-28 19:20:30,738 INFO L226 Difference]: Without dead ends: 17669 [2020-10-28 19:20:30,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:20:30,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17669 states. [2020-10-28 19:20:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17669 to 17629. [2020-10-28 19:20:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17629 states. [2020-10-28 19:20:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17629 states to 17629 states and 26705 transitions. [2020-10-28 19:20:31,861 INFO L78 Accepts]: Start accepts. Automaton has 17629 states and 26705 transitions. Word has length 254 [2020-10-28 19:20:31,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:31,862 INFO L481 AbstractCegarLoop]: Abstraction has 17629 states and 26705 transitions. [2020-10-28 19:20:31,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:20:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 17629 states and 26705 transitions. [2020-10-28 19:20:31,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 19:20:31,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:31,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:31,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:20:31,901 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:31,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:31,902 INFO L82 PathProgramCache]: Analyzing trace with hash -359535543, now seen corresponding path program 1 times [2020-10-28 19:20:31,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:31,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474845569] [2020-10-28 19:20:31,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:31,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:32,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:32,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:34,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:34,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:34,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:35,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:35,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:35,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:36,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:36,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-28 19:20:36,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:20:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 19:20:36,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:36,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:20:36,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:20:36,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 19:20:36,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:37,805 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 19:20:37,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:20:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:37,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:37,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:37,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:20:37,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:20:37,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:20:37,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:37,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:20:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:20:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:20:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:37,938 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 19:20:37,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474845569] [2020-10-28 19:20:37,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:20:37,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:20:37,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730497955] [2020-10-28 19:20:37,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:20:37,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:20:37,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:20:37,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:20:37,941 INFO L87 Difference]: Start difference. First operand 17629 states and 26705 transitions. Second operand 5 states. [2020-10-28 19:20:44,389 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-28 19:20:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:20:46,689 INFO L93 Difference]: Finished difference Result 52258 states and 79066 transitions. [2020-10-28 19:20:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:20:46,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-28 19:20:46,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:20:46,776 INFO L225 Difference]: With dead ends: 52258 [2020-10-28 19:20:46,776 INFO L226 Difference]: Without dead ends: 34658 [2020-10-28 19:20:46,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:20:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34658 states. [2020-10-28 19:20:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34658 to 34604. [2020-10-28 19:20:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34604 states. [2020-10-28 19:20:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34604 states to 34604 states and 52023 transitions. [2020-10-28 19:20:48,673 INFO L78 Accepts]: Start accepts. Automaton has 34604 states and 52023 transitions. Word has length 256 [2020-10-28 19:20:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:48,673 INFO L481 AbstractCegarLoop]: Abstraction has 34604 states and 52023 transitions. [2020-10-28 19:20:48,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:20:48,673 INFO L276 IsEmpty]: Start isEmpty. Operand 34604 states and 52023 transitions. [2020-10-28 19:20:48,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 19:20:48,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:48,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:48,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:20:48,719 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:48,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:48,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1945213157, now seen corresponding path program 1 times [2020-10-28 19:20:48,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:48,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584402808] [2020-10-28 19:20:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:48,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:49,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:49,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:53,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:53,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 19:20:53,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:20:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 19:20:53,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:53,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:20:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:20:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 19:20:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:54,749 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 19:20:54,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:20:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:54,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:54,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:20:54,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:20:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:20:54,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:54,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:20:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:20:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:20:54,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:54,875 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 19:20:54,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584402808] [2020-10-28 19:20:54,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:20:54,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:20:54,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260634654] [2020-10-28 19:20:54,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:20:54,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:20:54,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:20:54,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:20:54,879 INFO L87 Difference]: Start difference. First operand 34604 states and 52023 transitions. Second operand 5 states. [2020-10-28 19:21:02,216 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-28 19:21:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:21:05,122 INFO L93 Difference]: Finished difference Result 102539 states and 153945 transitions. [2020-10-28 19:21:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:21:05,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-28 19:21:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:21:05,224 INFO L225 Difference]: With dead ends: 102539 [2020-10-28 19:21:05,224 INFO L226 Difference]: Without dead ends: 67953 [2020-10-28 19:21:05,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:21:05,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67953 states. [2020-10-28 19:21:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67953 to 67923. [2020-10-28 19:21:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67923 states. [2020-10-28 19:21:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67923 states to 67923 states and 101347 transitions. [2020-10-28 19:21:08,918 INFO L78 Accepts]: Start accepts. Automaton has 67923 states and 101347 transitions. Word has length 258 [2020-10-28 19:21:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:21:08,919 INFO L481 AbstractCegarLoop]: Abstraction has 67923 states and 101347 transitions. [2020-10-28 19:21:08,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:21:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 67923 states and 101347 transitions. [2020-10-28 19:21:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-28 19:21:08,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:21:08,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:08,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:21:08,982 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:21:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:21:08,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1016224456, now seen corresponding path program 1 times [2020-10-28 19:21:08,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:21:08,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009109993] [2020-10-28 19:21:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:21:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:21:09,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:09,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:09,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:09,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:09,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:09,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:09,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:21:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-28 19:21:14,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:21:14,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:21:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:21:14,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:21:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:21:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:21:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 19:21:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:21:14,851 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 19:21:14,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:21:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:21:14,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:14,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:21:14,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:21:14,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:21:14,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:21:14,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:21:14,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:21:14,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:21:14,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:21:14,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:21:14,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:21:14,966 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 19:21:14,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009109993] [2020-10-28 19:21:14,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:21:14,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:21:14,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270642001] [2020-10-28 19:21:14,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:21:14,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:21:14,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:21:14,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:21:14,970 INFO L87 Difference]: Start difference. First operand 67923 states and 101347 transitions. Second operand 5 states. [2020-10-28 19:21:23,021 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-28 19:21:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:21:25,967 INFO L93 Difference]: Finished difference Result 144879 states and 215529 transitions. [2020-10-28 19:21:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:21:25,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-28 19:21:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:21:26,213 INFO L225 Difference]: With dead ends: 144879 [2020-10-28 19:21:26,214 INFO L226 Difference]: Without dead ends: 78763 [2020-10-28 19:21:26,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:21:26,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78763 states. [2020-10-28 19:21:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78763 to 67603. [2020-10-28 19:21:29,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67603 states. [2020-10-28 19:21:30,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67603 states to 67603 states and 100611 transitions. [2020-10-28 19:21:30,115 INFO L78 Accepts]: Start accepts. Automaton has 67603 states and 100611 transitions. Word has length 260 [2020-10-28 19:21:30,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:21:30,116 INFO L481 AbstractCegarLoop]: Abstraction has 67603 states and 100611 transitions. [2020-10-28 19:21:30,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:21:30,116 INFO L276 IsEmpty]: Start isEmpty. Operand 67603 states and 100611 transitions. [2020-10-28 19:21:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-28 19:21:30,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:21:30,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:30,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:21:30,188 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:21:30,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:21:30,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1989915177, now seen corresponding path program 1 times [2020-10-28 19:21:30,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:21:30,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682160415] [2020-10-28 19:21:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:21:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:21:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:30,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:30,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:30,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:31,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:35,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:21:35,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 19:21:35,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:21:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:21:35,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:21:35,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:21:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:21:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:21:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 19:21:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:21:36,123 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 19:21:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:21:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:21:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:36,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:21:36,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:21:36,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:21:36,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:21:36,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:21:36,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:21:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:21:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:21:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:21:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:21:36,255 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 19:21:36,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682160415] [2020-10-28 19:21:36,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:21:36,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:21:36,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791481765] [2020-10-28 19:21:36,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:21:36,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:21:36,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:21:36,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:21:36,258 INFO L87 Difference]: Start difference. First operand 67603 states and 100611 transitions. Second operand 5 states. [2020-10-28 19:21:46,132 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-28 19:21:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:21:50,164 INFO L93 Difference]: Finished difference Result 196853 states and 291990 transitions. [2020-10-28 19:21:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:21:50,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-28 19:21:50,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:21:50,395 INFO L225 Difference]: With dead ends: 196853 [2020-10-28 19:21:50,395 INFO L226 Difference]: Without dead ends: 131041 [2020-10-28 19:21:50,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:21:50,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131041 states. [2020-10-28 19:21:57,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131041 to 130981. [2020-10-28 19:21:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130981 states. [2020-10-28 19:21:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130981 states to 130981 states and 192912 transitions. [2020-10-28 19:21:58,114 INFO L78 Accepts]: Start accepts. Automaton has 130981 states and 192912 transitions. Word has length 262 [2020-10-28 19:21:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:21:58,114 INFO L481 AbstractCegarLoop]: Abstraction has 130981 states and 192912 transitions. [2020-10-28 19:21:58,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:21:58,115 INFO L276 IsEmpty]: Start isEmpty. Operand 130981 states and 192912 transitions. [2020-10-28 19:21:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-28 19:21:58,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:21:58,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:58,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:21:58,247 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:21:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:21:58,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1927300893, now seen corresponding path program 1 times [2020-10-28 19:21:58,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:21:58,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715533268] [2020-10-28 19:21:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:21:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:21:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:03,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:22:03,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 19:22:03,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:22:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 19:22:03,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:22:03,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:22:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:22:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:22:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 19:22:03,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:22:04,178 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 19:22:04,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:22:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:22:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:04,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:22:04,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:22:04,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:22:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:22:04,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:22:04,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:22:04,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:22:04,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:22:04,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:22:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:22:04,291 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 19:22:04,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715533268] [2020-10-28 19:22:04,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:22:04,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:22:04,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745433434] [2020-10-28 19:22:04,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:22:04,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:22:04,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:22:04,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:22:04,293 INFO L87 Difference]: Start difference. First operand 130981 states and 192912 transitions. Second operand 5 states. [2020-10-28 19:22:19,158 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-28 19:22:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:22:25,157 INFO L93 Difference]: Finished difference Result 386869 states and 568668 transitions. [2020-10-28 19:22:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:22:25,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-10-28 19:22:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:22:25,780 INFO L225 Difference]: With dead ends: 386869 [2020-10-28 19:22:25,780 INFO L226 Difference]: Without dead ends: 256235 [2020-10-28 19:22:25,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:22:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256235 states. [2020-10-28 19:22:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256235 to 256209. [2020-10-28 19:22:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256209 states. [2020-10-28 19:22:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256209 states to 256209 states and 373998 transitions. [2020-10-28 19:22:41,402 INFO L78 Accepts]: Start accepts. Automaton has 256209 states and 373998 transitions. Word has length 264 [2020-10-28 19:22:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:22:41,403 INFO L481 AbstractCegarLoop]: Abstraction has 256209 states and 373998 transitions. [2020-10-28 19:22:41,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:22:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 256209 states and 373998 transitions. [2020-10-28 19:22:41,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-28 19:22:41,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:22:41,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:41,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:22:41,591 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:22:41,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:22:41,591 INFO L82 PathProgramCache]: Analyzing trace with hash 391361912, now seen corresponding path program 1 times [2020-10-28 19:22:41,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:22:41,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987204312] [2020-10-28 19:22:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:22:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:22:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:41,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:42,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:42,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:42,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:42,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:42,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:42,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:42,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:42,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking...