/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:37:41,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:37:41,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:37:41,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:37:41,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:37:41,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:37:41,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:37:41,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:37:41,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:37:41,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:37:41,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:37:41,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:37:41,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:37:41,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:37:41,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:37:41,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:37:41,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:37:41,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:37:41,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:37:41,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:37:41,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:37:41,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:37:41,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:37:41,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:37:41,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:37:41,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:37:41,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:37:41,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:37:41,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:37:41,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:37:41,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:37:41,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:37:41,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:37:41,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:37:41,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:37:41,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:37:41,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:37:41,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:37:41,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:37:41,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:37:41,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:37:42,008 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 [2020-10-26 23:37:42,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:37:42,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:37:42,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:37:42,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:37:42,083 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:37:42,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:37:42,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:37:42,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:37:42,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:37:42,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:37:42,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:37:42,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:37:42,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:37:42,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:37:42,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:37:42,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:37:42,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:37:42,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:37:42,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:37:42,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:37:42,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:37:42,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:37:42,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:37:42,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:37:42,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:37:42,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:37:42,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:37:42,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:37:42,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:37:42,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:37:42,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:37:42,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:37:42,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:37:42,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:37:42,647 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:37:42,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-26 23:37:42,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3020928aa/3cc32cb2942846868fc289ebd2959642/FLAG2327f0e22 [2020-10-26 23:37:43,587 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:37:43,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-26 23:37:43,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3020928aa/3cc32cb2942846868fc289ebd2959642/FLAG2327f0e22 [2020-10-26 23:37:43,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3020928aa/3cc32cb2942846868fc289ebd2959642 [2020-10-26 23:37:43,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:37:43,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:37:43,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:37:43,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:37:43,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:37:43,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:37:43" (1/1) ... [2020-10-26 23:37:43,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125a752d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:43, skipping insertion in model container [2020-10-26 23:37:43,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:37:43" (1/1) ... [2020-10-26 23:37:43,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:37:43,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:37:44,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:37:44,773 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:37:45,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:37:45,189 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:37:45,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:45 WrapperNode [2020-10-26 23:37:45,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:37:45,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:37:45,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:37:45,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:37:45,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:45" (1/1) ... [2020-10-26 23:37:45,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:45" (1/1) ... [2020-10-26 23:37:45,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:45" (1/1) ... [2020-10-26 23:37:45,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:45" (1/1) ... [2020-10-26 23:37:45,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:45" (1/1) ... [2020-10-26 23:37:45,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:45" (1/1) ... [2020-10-26 23:37:45,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:45" (1/1) ... [2020-10-26 23:37:45,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:37:45,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:37:45,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:37:45,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:37:45,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:45" (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 [2020-10-26 23:37:45,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:37:45,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:37:45,532 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:37:45,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:37:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:37:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:37:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:37:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:37:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:37:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:37:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:37:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:37:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:37:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:37:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:37:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:37:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:37:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:37:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:37:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:37:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:37:49,047 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:37:49,048 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:37:49,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:37:49 BoogieIcfgContainer [2020-10-26 23:37:49,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:37:49,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:37:49,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:37:49,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:37:49,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:37:43" (1/3) ... [2020-10-26 23:37:49,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e82d65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:37:49, skipping insertion in model container [2020-10-26 23:37:49,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:37:45" (2/3) ... [2020-10-26 23:37:49,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e82d65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:37:49, skipping insertion in model container [2020-10-26 23:37:49,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:37:49" (3/3) ... [2020-10-26 23:37:49,066 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label14.c [2020-10-26 23:37:49,080 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:37:49,087 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:37:49,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:37:49,132 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:37:49,132 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:37:49,132 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:37:49,132 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:37:49,133 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:37:49,133 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:37:49,133 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:37:49,133 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:37:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:37:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 23:37:49,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:49,171 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] [2020-10-26 23:37:49,172 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:49,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:49,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1871102583, now seen corresponding path program 1 times [2020-10-26 23:37:49,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:49,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499604104] [2020-10-26 23:37:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:49,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:49,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 23:37:49,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-26 23:37:49,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:37:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:37:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 23:37:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:37:50,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:50,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:50,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:50,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:50,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:37:50,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:37:50,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:37:50,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499604104] [2020-10-26 23:37:50,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:37:50,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:37:50,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132013789] [2020-10-26 23:37:50,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:37:50,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:50,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:37:50,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:37:50,131 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:37:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:56,241 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-26 23:37:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:37:56,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-26 23:37:56,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:56,267 INFO L225 Difference]: With dead ends: 1208 [2020-10-26 23:37:56,268 INFO L226 Difference]: Without dead ends: 703 [2020-10-26 23:37:56,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:37:56,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-26 23:37:56,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-26 23:37:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-26 23:37:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-26 23:37:56,411 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 22 [2020-10-26 23:37:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:56,412 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-26 23:37:56,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:37:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-26 23:37:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-26 23:37:56,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:56,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:37:56,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:37:56,419 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:56,420 INFO L82 PathProgramCache]: Analyzing trace with hash 137838371, now seen corresponding path program 1 times [2020-10-26 23:37:56,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:56,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473971119] [2020-10-26 23:37:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:57,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:57,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:57,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:37:57,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:37:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-26 23:37:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:37:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:37:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:37:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:37:58,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:58,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:58,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:58,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:58,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:37:58,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:37:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:58,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:58,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:37:58,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:37:58,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-26 23:37:58,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:37:58,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:37:58,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473971119] [2020-10-26 23:37:58,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:58,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:37:58,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737100302] [2020-10-26 23:37:58,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:58,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:58,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:58,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:58,819 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-26 23:38:12,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:12,265 INFO L93 Difference]: Finished difference Result 2060 states and 3021 transitions. [2020-10-26 23:38:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:38:12,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-26 23:38:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:12,279 INFO L225 Difference]: With dead ends: 2060 [2020-10-26 23:38:12,279 INFO L226 Difference]: Without dead ends: 1369 [2020-10-26 23:38:12,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:38:12,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2020-10-26 23:38:12,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1333. [2020-10-26 23:38:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-10-26 23:38:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1725 transitions. [2020-10-26 23:38:12,380 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1725 transitions. Word has length 101 [2020-10-26 23:38:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:12,381 INFO L481 AbstractCegarLoop]: Abstraction has 1333 states and 1725 transitions. [2020-10-26 23:38:12,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:38:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1725 transitions. [2020-10-26 23:38:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-26 23:38:12,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:12,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:12,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:38:12,390 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:12,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:12,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1230858320, now seen corresponding path program 1 times [2020-10-26 23:38:12,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:12,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106608916] [2020-10-26 23:38:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:12,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:13,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:16,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:16,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-26 23:38:16,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:38:16,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4138 [2020-10-26 23:38:16,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:38:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:38:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:38:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:16,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:16,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:16,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:16,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:16,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:38:16,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:38:16,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:16,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:16,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:16,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:38:16,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:16,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:38:16,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:38:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:38:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:17,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:17,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:17,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:38:17,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:38:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-26 23:38:17,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:38:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:38:17,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:38:18,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106608916] [2020-10-26 23:38:18,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:18,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:38:18,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947626629] [2020-10-26 23:38:18,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:38:18,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:18,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:38:18,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:38:18,551 INFO L87 Difference]: Start difference. First operand 1333 states and 1725 transitions. Second operand 11 states. [2020-10-26 23:38:18,845 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2020-10-26 23:38:19,639 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-26 23:38:20,148 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-26 23:38:20,776 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-26 23:38:21,946 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-10-26 23:38:22,833 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2020-10-26 23:38:23,095 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-10-26 23:38:23,412 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-10-26 23:38:25,797 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-10-26 23:38:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:40,032 INFO L93 Difference]: Finished difference Result 4087 states and 5393 transitions. [2020-10-26 23:38:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 23:38:40,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 196 [2020-10-26 23:38:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:40,058 INFO L225 Difference]: With dead ends: 4087 [2020-10-26 23:38:40,058 INFO L226 Difference]: Without dead ends: 2760 [2020-10-26 23:38:40,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=320, Invalid=940, Unknown=0, NotChecked=0, Total=1260 [2020-10-26 23:38:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2020-10-26 23:38:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2293. [2020-10-26 23:38:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2293 states. [2020-10-26 23:38:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 2946 transitions. [2020-10-26 23:38:40,193 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 2946 transitions. Word has length 196 [2020-10-26 23:38:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:40,198 INFO L481 AbstractCegarLoop]: Abstraction has 2293 states and 2946 transitions. [2020-10-26 23:38:40,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:38:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 2946 transitions. [2020-10-26 23:38:40,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-26 23:38:40,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:40,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:40,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:38:40,212 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:40,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:40,212 INFO L82 PathProgramCache]: Analyzing trace with hash -177737404, now seen corresponding path program 1 times [2020-10-26 23:38:40,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:40,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884165953] [2020-10-26 23:38:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:40,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:45,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:45,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-26 23:38:45,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:38:45,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 23:38:45,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:45,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:38:45,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:38:45,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:38:45,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:45,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:45,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:45,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:45,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:45,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:38:45,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:38:45,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:45,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:46,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:38:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-26 23:38:46,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:38:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:46,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:38:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:46,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:46,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:46,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:38:46,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:46,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:38:46,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:38:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:46,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:38:47,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884165953] [2020-10-26 23:38:47,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:47,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:38:47,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984173691] [2020-10-26 23:38:47,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:38:47,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:38:47,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:38:47,255 INFO L87 Difference]: Start difference. First operand 2293 states and 2946 transitions. Second operand 8 states. [2020-10-26 23:38:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:57,701 INFO L93 Difference]: Finished difference Result 4938 states and 6291 transitions. [2020-10-26 23:38:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:38:57,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 302 [2020-10-26 23:38:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:57,727 INFO L225 Difference]: With dead ends: 4938 [2020-10-26 23:38:57,727 INFO L226 Difference]: Without dead ends: 2651 [2020-10-26 23:38:57,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:38:57,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2020-10-26 23:38:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2613. [2020-10-26 23:38:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-26 23:38:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3277 transitions. [2020-10-26 23:38:57,828 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3277 transitions. Word has length 302 [2020-10-26 23:38:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:57,829 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3277 transitions. [2020-10-26 23:38:57,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:38:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3277 transitions. [2020-10-26 23:38:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-26 23:38:57,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:57,840 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:57,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:38:57,840 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:57,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:57,841 INFO L82 PathProgramCache]: Analyzing trace with hash -553090917, now seen corresponding path program 1 times [2020-10-26 23:38:57,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:57,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834387903] [2020-10-26 23:38:57,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:58,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:58,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:00,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:00,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-26 23:39:00,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:39:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2391 [2020-10-26 23:39:00,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:39:00,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:39:00,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:39:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:00,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:00,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:00,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:39:00,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:00,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:39:00,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:00,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:00,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:39:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:01,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:01,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:39:01,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-26 23:39:01,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:39:01,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:01,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:39:01,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:39:01,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:39:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:01,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:01,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:39:01,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:01,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 23:39:01,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:39:01,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:39:01,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834387903] [2020-10-26 23:39:01,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:39:01,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:39:01,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381448517] [2020-10-26 23:39:01,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:39:01,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:39:01,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:39:01,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:39:01,775 INFO L87 Difference]: Start difference. First operand 2613 states and 3277 transitions. Second operand 7 states. [2020-10-26 23:39:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:39:15,354 INFO L93 Difference]: Finished difference Result 5936 states and 7906 transitions. [2020-10-26 23:39:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:39:15,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-26 23:39:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:39:15,378 INFO L225 Difference]: With dead ends: 5936 [2020-10-26 23:39:15,379 INFO L226 Difference]: Without dead ends: 3636 [2020-10-26 23:39:15,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:39:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2020-10-26 23:39:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3583. [2020-10-26 23:39:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3583 states. [2020-10-26 23:39:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4522 transitions. [2020-10-26 23:39:15,502 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4522 transitions. Word has length 376 [2020-10-26 23:39:15,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:39:15,503 INFO L481 AbstractCegarLoop]: Abstraction has 3583 states and 4522 transitions. [2020-10-26 23:39:15,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:39:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4522 transitions. [2020-10-26 23:39:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-26 23:39:15,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:39:15,513 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:39:15,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:39:15,513 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:39:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:39:15,514 INFO L82 PathProgramCache]: Analyzing trace with hash 511279799, now seen corresponding path program 1 times [2020-10-26 23:39:15,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:39:15,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832680015] [2020-10-26 23:39:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:39:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:15,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:16,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:20,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:20,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-26 23:39:20,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:39:20,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:39:20,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:39:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:39:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-26 23:39:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:20,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:39:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:20,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:20,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:39:20,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:20,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:39:20,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:20,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:20,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:39:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:20,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:20,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:39:20,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:20,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:39:20,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:39:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:20,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:39:20,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:21,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:39:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:22,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:22,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:39:22,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:39:22,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-10-26 23:39:22,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:39:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:22,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:39:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:22,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:22,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:22,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:39:22,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:39:22,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:39:22,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 211 proven. 6 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 23:39:22,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832680015] [2020-10-26 23:39:22,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:39:22,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:39:22,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490153564] [2020-10-26 23:39:22,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:39:22,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:39:22,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:39:22,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:39:22,633 INFO L87 Difference]: Start difference. First operand 3583 states and 4522 transitions. Second operand 7 states. [2020-10-26 23:39:36,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:39:36,669 INFO L93 Difference]: Finished difference Result 8764 states and 11326 transitions. [2020-10-26 23:39:36,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:39:36,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-26 23:39:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:39:36,699 INFO L225 Difference]: With dead ends: 8764 [2020-10-26 23:39:36,700 INFO L226 Difference]: Without dead ends: 5170 [2020-10-26 23:39:36,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:39:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2020-10-26 23:39:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 5156. [2020-10-26 23:39:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5156 states. [2020-10-26 23:39:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 6210 transitions. [2020-10-26 23:39:36,879 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 6210 transitions. Word has length 397 [2020-10-26 23:39:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:39:36,880 INFO L481 AbstractCegarLoop]: Abstraction has 5156 states and 6210 transitions. [2020-10-26 23:39:36,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:39:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 6210 transitions. [2020-10-26 23:39:36,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-26 23:39:36,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:39:36,893 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:39:36,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:39:36,893 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:39:36,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:39:36,894 INFO L82 PathProgramCache]: Analyzing trace with hash 120324291, now seen corresponding path program 1 times [2020-10-26 23:39:36,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:39:36,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579089083] [2020-10-26 23:39:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:39:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:37,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:37,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:39,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:41,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:42,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:42,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-26 23:39:42,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:39:42,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 23:39:42,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:39:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:39:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 439 [2020-10-26 23:39:42,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:42,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:39:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:42,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:42,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:39:42,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:42,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:39:42,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:39:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:39:42,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:42,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:39:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:42,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:42,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:42,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:39:42,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-26 23:39:42,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:39:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:43,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:39:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:43,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:43,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:39:43,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:43,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:39:43,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:39:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-26 23:39:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:43,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:43,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:39:43,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:39:43,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:39:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 44 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-10-26 23:39:43,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579089083] [2020-10-26 23:39:43,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:39:43,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:39:43,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063505733] [2020-10-26 23:39:43,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:39:43,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:39:43,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:39:43,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:39:43,761 INFO L87 Difference]: Start difference. First operand 5156 states and 6210 transitions. Second operand 7 states. [2020-10-26 23:39:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:39:54,338 INFO L93 Difference]: Finished difference Result 12897 states and 16085 transitions. [2020-10-26 23:39:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:39:54,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 451 [2020-10-26 23:39:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:39:54,385 INFO L225 Difference]: With dead ends: 12897 [2020-10-26 23:39:54,385 INFO L226 Difference]: Without dead ends: 8035 [2020-10-26 23:39:54,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:39:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8035 states. [2020-10-26 23:39:54,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8035 to 6748. [2020-10-26 23:39:54,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6748 states. [2020-10-26 23:39:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 7900 transitions. [2020-10-26 23:39:54,688 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 7900 transitions. Word has length 451 [2020-10-26 23:39:54,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:39:54,689 INFO L481 AbstractCegarLoop]: Abstraction has 6748 states and 7900 transitions. [2020-10-26 23:39:54,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:39:54,690 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 7900 transitions. [2020-10-26 23:39:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-26 23:39:54,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:39:54,696 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:39:54,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:39:54,697 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:39:54,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:39:54,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1413325523, now seen corresponding path program 1 times [2020-10-26 23:39:54,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:39:54,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698272643] [2020-10-26 23:39:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:39:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:59,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-26 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:39:59,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:00,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:40:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:00,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:00,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:00,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:40:00,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:00,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:40:00,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:40:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:40:00,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:00,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:40:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:00,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:40:00,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-26 23:40:00,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:40:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:40:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:40:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:00,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:00,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:00,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:40:00,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-26 23:40:00,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:40:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:40:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:40:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:00,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:40:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:01,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:01,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:40:01,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:01,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:40:01,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:40:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:40:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:40:01,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 154 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 23:40:01,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698272643] [2020-10-26 23:40:01,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:40:01,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:40:01,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139587219] [2020-10-26 23:40:01,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:40:01,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:40:01,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:40:01,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:40:01,462 INFO L87 Difference]: Start difference. First operand 6748 states and 7900 transitions. Second operand 7 states. [2020-10-26 23:40:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:40:11,880 INFO L93 Difference]: Finished difference Result 15426 states and 18090 transitions. [2020-10-26 23:40:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:40:11,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 487 [2020-10-26 23:40:11,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:40:11,933 INFO L225 Difference]: With dead ends: 15426 [2020-10-26 23:40:11,933 INFO L226 Difference]: Without dead ends: 8991 [2020-10-26 23:40:11,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:40:11,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8991 states. [2020-10-26 23:40:12,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8991 to 8646. [2020-10-26 23:40:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8646 states. [2020-10-26 23:40:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 9977 transitions. [2020-10-26 23:40:12,230 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 9977 transitions. Word has length 487 [2020-10-26 23:40:12,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:40:12,232 INFO L481 AbstractCegarLoop]: Abstraction has 8646 states and 9977 transitions. [2020-10-26 23:40:12,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:40:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 9977 transitions. [2020-10-26 23:40:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-26 23:40:12,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:40:12,243 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:40:12,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:40:12,244 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:40:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:40:12,245 INFO L82 PathProgramCache]: Analyzing trace with hash 48636069, now seen corresponding path program 1 times [2020-10-26 23:40:12,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:40:12,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482397063] [2020-10-26 23:40:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:40:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:12,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:13,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:14,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:14,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 515 [2020-10-26 23:40:14,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:40:14,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1752 [2020-10-26 23:40:14,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:14,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:40:14,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:40:14,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:40:14,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:14,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:40:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:14,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:14,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:40:14,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:14,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:40:14,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:40:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:40:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:14,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:40:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:14,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:14,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:40:14,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:14,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:40:14,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:40:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:40:14,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:14,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:40:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:14,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:14,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:14,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:40:14,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:40:14,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:40:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:40:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:14,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:40:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:14,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:14,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:14,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:40:14,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:40:14,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:40:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:40:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:40:14,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:40:15,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482397063] [2020-10-26 23:40:15,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:40:15,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:40:15,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159644304] [2020-10-26 23:40:15,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:40:15,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:40:15,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:40:15,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:40:15,320 INFO L87 Difference]: Start difference. First operand 8646 states and 9977 transitions. Second operand 7 states. [2020-10-26 23:40:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:40:31,478 INFO L93 Difference]: Finished difference Result 22355 states and 26252 transitions. [2020-10-26 23:40:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:40:31,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 499 [2020-10-26 23:40:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:40:31,528 INFO L225 Difference]: With dead ends: 22355 [2020-10-26 23:40:31,528 INFO L226 Difference]: Without dead ends: 14022 [2020-10-26 23:40:31,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:40:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2020-10-26 23:40:31,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 11540. [2020-10-26 23:40:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11540 states. [2020-10-26 23:40:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11540 states to 11540 states and 13674 transitions. [2020-10-26 23:40:32,002 INFO L78 Accepts]: Start accepts. Automaton has 11540 states and 13674 transitions. Word has length 499 [2020-10-26 23:40:32,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:40:32,004 INFO L481 AbstractCegarLoop]: Abstraction has 11540 states and 13674 transitions. [2020-10-26 23:40:32,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:40:32,004 INFO L276 IsEmpty]: Start isEmpty. Operand 11540 states and 13674 transitions. [2020-10-26 23:40:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-26 23:40:32,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:40:32,011 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:40:32,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:40:32,011 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:40:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:40:32,012 INFO L82 PathProgramCache]: Analyzing trace with hash 710328961, now seen corresponding path program 1 times [2020-10-26 23:40:32,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:40:32,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390951359] [2020-10-26 23:40:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:40:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:32,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:33,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:34,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:34,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-26 23:40:34,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:40:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2826 [2020-10-26 23:40:34,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:40:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:40:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:40:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:35,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:40:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:35,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:35,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:35,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:40:35,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:40:35,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:40:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:40:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:35,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:40:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:35,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:35,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:40:35,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:40:35,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:40:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:40:35,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:35,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:40:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:35,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:35,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:40:35,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:40:35,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:40:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:40:35,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:40:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:35,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:35,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:35,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-26 23:40:35,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:40:35,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:40:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:40:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:40:35,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:40:35,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390951359] [2020-10-26 23:40:35,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:40:35,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:40:35,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864070016] [2020-10-26 23:40:35,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:40:35,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:40:35,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:40:35,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:40:35,852 INFO L87 Difference]: Start difference. First operand 11540 states and 13674 transitions. Second operand 7 states. [2020-10-26 23:40:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:40:50,233 INFO L93 Difference]: Finished difference Result 23460 states and 27871 transitions. [2020-10-26 23:40:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:40:50,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2020-10-26 23:40:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:40:50,291 INFO L225 Difference]: With dead ends: 23460 [2020-10-26 23:40:50,291 INFO L226 Difference]: Without dead ends: 12233 [2020-10-26 23:40:50,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:40:50,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12233 states. [2020-10-26 23:40:50,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12233 to 11862. [2020-10-26 23:40:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11862 states. [2020-10-26 23:40:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11862 states to 11862 states and 13577 transitions. [2020-10-26 23:40:50,625 INFO L78 Accepts]: Start accepts. Automaton has 11862 states and 13577 transitions. Word has length 501 [2020-10-26 23:40:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:40:50,627 INFO L481 AbstractCegarLoop]: Abstraction has 11862 states and 13577 transitions. [2020-10-26 23:40:50,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:40:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 11862 states and 13577 transitions. [2020-10-26 23:40:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-26 23:40:50,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:40:50,635 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:40:50,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:40:50,635 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:40:50,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:40:50,636 INFO L82 PathProgramCache]: Analyzing trace with hash -17274878, now seen corresponding path program 1 times [2020-10-26 23:40:50,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:40:50,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757218296] [2020-10-26 23:40:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:40:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:50,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:51,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:52,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:52,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:52,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-26 23:40:52,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:40:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2190 [2020-10-26 23:40:52,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:40:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:40:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:40:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:53,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:40:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:53,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:53,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:40:53,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:53,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:40:53,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:40:53,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:53,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:40:53,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:40:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:53,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:53,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:40:53,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:53,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:40:53,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:53,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:40:53,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:53,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:40:53,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:53,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:40:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:53,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:53,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:40:53,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:40:53,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:40:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:40:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:40:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:53,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:40:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:40:53,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:40:53,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:40:53,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:40:53,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:40:53,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:40:53,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:40:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:40:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:40:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:40:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:40:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:40:53,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757218296] [2020-10-26 23:40:53,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:40:53,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:40:53,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130467650] [2020-10-26 23:40:53,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:40:53,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:40:53,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:40:53,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:40:53,990 INFO L87 Difference]: Start difference. First operand 11862 states and 13577 transitions. Second operand 8 states. [2020-10-26 23:41:07,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:41:07,147 INFO L93 Difference]: Finished difference Result 30341 states and 35914 transitions. [2020-10-26 23:41:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:41:07,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 513 [2020-10-26 23:41:07,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:41:07,213 INFO L225 Difference]: With dead ends: 30341 [2020-10-26 23:41:07,213 INFO L226 Difference]: Without dead ends: 18139 [2020-10-26 23:41:07,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:41:07,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18139 states. [2020-10-26 23:41:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18139 to 17501. [2020-10-26 23:41:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17501 states. [2020-10-26 23:41:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17501 states to 17501 states and 20248 transitions. [2020-10-26 23:41:07,769 INFO L78 Accepts]: Start accepts. Automaton has 17501 states and 20248 transitions. Word has length 513 [2020-10-26 23:41:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:41:07,771 INFO L481 AbstractCegarLoop]: Abstraction has 17501 states and 20248 transitions. [2020-10-26 23:41:07,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:41:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 17501 states and 20248 transitions. [2020-10-26 23:41:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-26 23:41:07,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:41:07,782 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:41:07,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:41:07,782 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:41:07,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:41:07,783 INFO L82 PathProgramCache]: Analyzing trace with hash 153833381, now seen corresponding path program 1 times [2020-10-26 23:41:07,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:41:07,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267962241] [2020-10-26 23:41:07,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:41:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:41:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:41:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:41:10,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:41:10,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 597 [2020-10-26 23:41:10,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:41:10,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2787 [2020-10-26 23:41:10,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:41:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:41:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-26 23:41:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:41:10,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:41:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:41:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:41:10,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:41:10,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:41:10,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:41:10,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:41:10,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:41:10,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:41:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:41:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:41:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:41:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:41:10,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:41:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:41:10,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:41:10,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:41:10,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:41:10,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:41:10,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:41:10,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:41:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:41:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:41:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:41:10,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:41:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:41:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:41:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:41:11,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:41:11,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-26 23:41:11,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:41:11,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:41:11,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:41:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:41:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:41:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 23:41:11,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:41:11,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-26 23:41:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:41:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:41:11,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:41:11,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:41:11,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:41:11,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:41:11,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:41:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:41:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:41:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:41:11,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:41:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-26 23:41:11,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267962241] [2020-10-26 23:41:11,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:41:11,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:41:11,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797050936] [2020-10-26 23:41:11,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:41:11,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:41:11,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:41:11,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:41:11,809 INFO L87 Difference]: Start difference. First operand 17501 states and 20248 transitions. Second operand 7 states. [2020-10-26 23:41:14,531 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:41:14,916 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67