/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:14:05,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:14:05,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:14:05,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:14:05,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:14:05,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:14:05,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:14:05,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:14:05,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:14:05,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:14:05,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:14:05,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:14:05,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:14:05,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:14:05,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:14:05,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:14:05,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:14:05,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:14:05,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:14:05,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:14:05,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:14:05,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:14:05,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:14:05,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:14:05,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:14:05,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:14:05,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:14:05,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:14:05,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:14:05,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:14:05,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:14:05,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:14:05,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:14:05,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:14:05,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:14:05,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:14:05,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:14:05,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:14:05,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:14:05,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:14:05,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:14:05,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:14:05,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:14:05,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:14:05,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:14:05,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:14:05,386 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:14:05,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:14:05,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:14:05,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:14:05,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:14:05,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:14:05,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:14:05,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:14:05,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:14:05,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:14:05,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:14:05,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:14:05,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:14:05,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:14:05,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:14:05,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:14:05,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:14:05,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:14:05,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:14:05,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:14:05,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:14:05,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:14:05,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:14:05,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:14:05,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:14:05,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:14:05,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:14:05,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:14:05,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:14:05,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:14:05,938 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:14:05,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label56.c [2020-10-28 13:14:06,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe4eefc12/48a4bcbba17346779e75616a27999f21/FLAG114b740f0 [2020-10-28 13:14:07,167 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:14:07,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label56.c [2020-10-28 13:14:07,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe4eefc12/48a4bcbba17346779e75616a27999f21/FLAG114b740f0 [2020-10-28 13:14:07,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe4eefc12/48a4bcbba17346779e75616a27999f21 [2020-10-28 13:14:07,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:14:07,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:14:07,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:14:07,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:14:07,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:14:07,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:14:07" (1/1) ... [2020-10-28 13:14:07,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5540fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:07, skipping insertion in model container [2020-10-28 13:14:07,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:14:07" (1/1) ... [2020-10-28 13:14:07,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:14:07,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:14:08,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:14:08,343 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:14:08,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:14:08,688 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:14:08,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:08 WrapperNode [2020-10-28 13:14:08,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:14:08,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:14:08,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:14:08,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:14:08,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:08" (1/1) ... [2020-10-28 13:14:08,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:08" (1/1) ... [2020-10-28 13:14:08,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:08" (1/1) ... [2020-10-28 13:14:08,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:08" (1/1) ... [2020-10-28 13:14:08,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:08" (1/1) ... [2020-10-28 13:14:08,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:08" (1/1) ... [2020-10-28 13:14:08,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:08" (1/1) ... [2020-10-28 13:14:08,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:14:08,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:14:08,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:14:08,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:14:08,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:14:09,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:14:09,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:14:09,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:14:09,064 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:14:09,065 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:14:09,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:14:09,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:14:09,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:14:09,067 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:14:09,067 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:14:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:14:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:14:09,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:14:09,069 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:14:09,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:14:09,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:14:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:14:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:14:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:14:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:14:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:14:13,133 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:14:13,134 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:14:13,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:14:13 BoogieIcfgContainer [2020-10-28 13:14:13,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:14:13,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:14:13,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:14:13,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:14:13,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:14:07" (1/3) ... [2020-10-28 13:14:13,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd1cfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:14:13, skipping insertion in model container [2020-10-28 13:14:13,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:08" (2/3) ... [2020-10-28 13:14:13,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd1cfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:14:13, skipping insertion in model container [2020-10-28 13:14:13,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:14:13" (3/3) ... [2020-10-28 13:14:13,149 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label56.c [2020-10-28 13:14:13,165 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:14:13,173 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:14:13,190 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:14:13,227 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:14:13,228 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:14:13,228 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:14:13,228 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:14:13,228 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:14:13,228 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:14:13,229 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:14:13,229 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:14:13,263 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:14:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 13:14:13,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:13,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:13,275 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:13,283 INFO L82 PathProgramCache]: Analyzing trace with hash 336925073, now seen corresponding path program 1 times [2020-10-28 13:14:13,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:13,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023919634] [2020-10-28 13:14:13,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:13,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:14,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:14,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 13:14:14,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-28 13:14:14,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:14,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:14:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:14:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 13:14:14,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:14:14,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:14,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:14,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:14,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:14,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:14:14,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:14,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:14:14,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:14:14,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023919634] [2020-10-28 13:14:14,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:14:14,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:14:14,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529421709] [2020-10-28 13:14:14,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:14:14,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:14,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:14:14,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:14:14,427 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-28 13:14:22,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:22,971 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-28 13:14:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:14:22,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-28 13:14:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:22,998 INFO L225 Difference]: With dead ends: 1208 [2020-10-28 13:14:22,998 INFO L226 Difference]: Without dead ends: 703 [2020-10-28 13:14:23,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:14:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-28 13:14:23,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-28 13:14:23,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-28 13:14:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-28 13:14:23,140 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 40 [2020-10-28 13:14:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:23,141 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-28 13:14:23,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:14:23,142 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-28 13:14:23,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 13:14:23,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:23,153 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:23,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:14:23,154 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:23,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:23,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1969371253, now seen corresponding path program 1 times [2020-10-28 13:14:23,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:23,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46172544] [2020-10-28 13:14:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:24,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:24,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 13:14:24,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:14:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1614 [2020-10-28 13:14:24,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:24,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:14:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:14:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:14:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:14:25,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:25,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:25,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:25,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:25,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:25,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:14:25,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:25,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:14:25,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 13:14:25,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:25,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:25,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:14:25,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:25,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 13:14:25,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:25,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:25,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:25,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:14:25,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:14:25,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46172544] [2020-10-28 13:14:25,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:14:25,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:14:25,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611745269] [2020-10-28 13:14:25,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:25,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:25,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:25,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:25,512 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-28 13:14:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:34,573 INFO L93 Difference]: Finished difference Result 2066 states and 3031 transitions. [2020-10-28 13:14:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:14:34,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-28 13:14:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:34,591 INFO L225 Difference]: With dead ends: 2066 [2020-10-28 13:14:34,592 INFO L226 Difference]: Without dead ends: 1375 [2020-10-28 13:14:34,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:14:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-10-28 13:14:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1338. [2020-10-28 13:14:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-28 13:14:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1730 transitions. [2020-10-28 13:14:34,673 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1730 transitions. Word has length 119 [2020-10-28 13:14:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:34,674 INFO L481 AbstractCegarLoop]: Abstraction has 1338 states and 1730 transitions. [2020-10-28 13:14:34,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1730 transitions. [2020-10-28 13:14:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-28 13:14:34,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:34,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:34,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:14:34,680 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:34,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:34,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1325823943, now seen corresponding path program 1 times [2020-10-28 13:14:34,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:34,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59113766] [2020-10-28 13:14:34,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:34,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:34,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:36,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:37,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:37,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-28 13:14:37,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:14:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3215 [2020-10-28 13:14:37,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:37,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:14:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:14:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:14:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:38,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:38,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:38,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:38,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:14:38,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:38,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:14:38,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:38,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:38,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:38,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:14:38,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-28 13:14:38,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:38,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:14:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:14:39,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59113766] [2020-10-28 13:14:39,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:14:39,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:14:39,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161538157] [2020-10-28 13:14:39,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:39,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:39,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:39,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:39,308 INFO L87 Difference]: Start difference. First operand 1338 states and 1730 transitions. Second operand 7 states. [2020-10-28 13:14:49,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:49,064 INFO L93 Difference]: Finished difference Result 3046 states and 3913 transitions. [2020-10-28 13:14:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:14:49,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-28 13:14:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:49,077 INFO L225 Difference]: With dead ends: 3046 [2020-10-28 13:14:49,077 INFO L226 Difference]: Without dead ends: 1714 [2020-10-28 13:14:49,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:14:49,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-10-28 13:14:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1659. [2020-10-28 13:14:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-10-28 13:14:49,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2061 transitions. [2020-10-28 13:14:49,151 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2061 transitions. Word has length 240 [2020-10-28 13:14:49,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:49,152 INFO L481 AbstractCegarLoop]: Abstraction has 1659 states and 2061 transitions. [2020-10-28 13:14:49,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:49,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2061 transitions. [2020-10-28 13:14:49,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-28 13:14:49,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:49,159 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:49,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:14:49,160 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:49,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:49,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1146084702, now seen corresponding path program 1 times [2020-10-28 13:14:49,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:49,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745387597] [2020-10-28 13:14:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:51,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:51,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-28 13:14:51,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:14:51,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1968 [2020-10-28 13:14:51,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:51,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:14:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 13:14:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:51,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:51,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:51,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:51,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:51,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:14:51,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:51,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:51,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:51,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:51,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:51,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:51,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:51,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:51,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:14:51,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:51,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-28 13:14:51,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:51,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:51,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:14:51,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:14:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:14:52,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745387597] [2020-10-28 13:14:52,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:52,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:14:52,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16706623] [2020-10-28 13:14:52,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:14:52,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:52,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:14:52,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:14:52,107 INFO L87 Difference]: Start difference. First operand 1659 states and 2061 transitions. Second operand 5 states. [2020-10-28 13:15:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:01,904 INFO L93 Difference]: Finished difference Result 3652 states and 4788 transitions. [2020-10-28 13:15:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:15:01,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-28 13:15:01,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:01,919 INFO L225 Difference]: With dead ends: 3652 [2020-10-28 13:15:01,919 INFO L226 Difference]: Without dead ends: 2306 [2020-10-28 13:15:01,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:15:01,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2020-10-28 13:15:02,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2299. [2020-10-28 13:15:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-28 13:15:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2796 transitions. [2020-10-28 13:15:02,012 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2796 transitions. Word has length 314 [2020-10-28 13:15:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:02,013 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 2796 transitions. [2020-10-28 13:15:02,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:15:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2796 transitions. [2020-10-28 13:15:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-28 13:15:02,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:02,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:15:02,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:15:02,020 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:02,021 INFO L82 PathProgramCache]: Analyzing trace with hash 570365786, now seen corresponding path program 1 times [2020-10-28 13:15:02,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:02,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347856461] [2020-10-28 13:15:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:02,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:06,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:06,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-28 13:15:06,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:15:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4130 [2020-10-28 13:15:06,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:06,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:15:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-28 13:15:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:06,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:06,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:06,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:06,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:15:06,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:06,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:06,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:06,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:06,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:15:06,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:15:06,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:06,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:15:06,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:15:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:15:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:06,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:07,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:07,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:15:07,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:15:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-28 13:15:07,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:07,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:15:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 122 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:15:07,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347856461] [2020-10-28 13:15:07,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:07,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:07,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247109822] [2020-10-28 13:15:07,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:07,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:07,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:07,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:07,560 INFO L87 Difference]: Start difference. First operand 2299 states and 2796 transitions. Second operand 7 states. [2020-10-28 13:15:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:21,423 INFO L93 Difference]: Finished difference Result 6841 states and 8484 transitions. [2020-10-28 13:15:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:15:21,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-28 13:15:21,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:21,448 INFO L225 Difference]: With dead ends: 6841 [2020-10-28 13:15:21,448 INFO L226 Difference]: Without dead ends: 3900 [2020-10-28 13:15:21,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:15:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3900 states. [2020-10-28 13:15:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3900 to 3880. [2020-10-28 13:15:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3880 states. [2020-10-28 13:15:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 4399 transitions. [2020-10-28 13:15:21,578 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 4399 transitions. Word has length 335 [2020-10-28 13:15:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:21,578 INFO L481 AbstractCegarLoop]: Abstraction has 3880 states and 4399 transitions. [2020-10-28 13:15:21,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 4399 transitions. [2020-10-28 13:15:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-28 13:15:21,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:21,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:15:21,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:15:21,588 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:21,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:21,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1988154896, now seen corresponding path program 1 times [2020-10-28 13:15:21,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:21,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831551222] [2020-10-28 13:15:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:21,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:24,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:24,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-28 13:15:24,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:15:24,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2971 [2020-10-28 13:15:24,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:24,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:24,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:24,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:15:24,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:15:24,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:24,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:24,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:24,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:24,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:15:24,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:24,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:24,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:25,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:25,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:15:25,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 13:15:25,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:25,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:15:25,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:25,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:15:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:25,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:25,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:25,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:15:25,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 13:15:25,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:25,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:15:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:15:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:15:25,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831551222] [2020-10-28 13:15:25,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:25,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:25,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292218078] [2020-10-28 13:15:25,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:25,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:25,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:25,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:25,958 INFO L87 Difference]: Start difference. First operand 3880 states and 4399 transitions. Second operand 7 states. [2020-10-28 13:15:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:33,560 INFO L93 Difference]: Finished difference Result 8438 states and 9610 transitions. [2020-10-28 13:15:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:15:33,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 425 [2020-10-28 13:15:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:33,596 INFO L225 Difference]: With dead ends: 8438 [2020-10-28 13:15:33,596 INFO L226 Difference]: Without dead ends: 4871 [2020-10-28 13:15:33,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:15:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2020-10-28 13:15:33,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4847. [2020-10-28 13:15:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4847 states. [2020-10-28 13:15:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 5428 transitions. [2020-10-28 13:15:33,750 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 5428 transitions. Word has length 425 [2020-10-28 13:15:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:33,754 INFO L481 AbstractCegarLoop]: Abstraction has 4847 states and 5428 transitions. [2020-10-28 13:15:33,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 5428 transitions. [2020-10-28 13:15:33,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-28 13:15:33,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:33,768 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:33,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:15:33,768 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:33,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:33,769 INFO L82 PathProgramCache]: Analyzing trace with hash 247073672, now seen corresponding path program 1 times [2020-10-28 13:15:33,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:33,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472190955] [2020-10-28 13:15:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:34,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:34,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-28 13:15:34,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-28 13:15:34,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:34,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:15:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 13:15:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:34,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:34,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:34,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:34,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:34,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:34,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:34,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:35,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:35,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:15:35,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:35,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:15:35,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:35,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:35,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:15:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:35,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:35,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:15:35,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:15:35,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:35,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:15:35,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:15:35,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472190955] [2020-10-28 13:15:35,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:35,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:15:35,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127645853] [2020-10-28 13:15:35,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:15:35,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:35,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:15:35,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:15:35,661 INFO L87 Difference]: Start difference. First operand 4847 states and 5428 transitions. Second operand 5 states. [2020-10-28 13:15:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:44,423 INFO L93 Difference]: Finished difference Result 10428 states and 12018 transitions. [2020-10-28 13:15:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:15:44,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 437 [2020-10-28 13:15:44,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:44,460 INFO L225 Difference]: With dead ends: 10428 [2020-10-28 13:15:44,461 INFO L226 Difference]: Without dead ends: 6815 [2020-10-28 13:15:44,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:15:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2020-10-28 13:15:44,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 6799. [2020-10-28 13:15:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6799 states. [2020-10-28 13:15:44,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6799 states to 6799 states and 7755 transitions. [2020-10-28 13:15:44,642 INFO L78 Accepts]: Start accepts. Automaton has 6799 states and 7755 transitions. Word has length 437 [2020-10-28 13:15:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:44,643 INFO L481 AbstractCegarLoop]: Abstraction has 6799 states and 7755 transitions. [2020-10-28 13:15:44,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:15:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6799 states and 7755 transitions. [2020-10-28 13:15:44,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-28 13:15:44,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:44,649 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:15:44,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:15:44,650 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:44,650 INFO L82 PathProgramCache]: Analyzing trace with hash -151271283, now seen corresponding path program 1 times [2020-10-28 13:15:44,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:44,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665731435] [2020-10-28 13:15:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:45,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:45,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:49,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:49,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:49,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-28 13:15:49,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:15:49,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:15:49,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:49,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:15:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:15:49,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:50,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:50,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:50,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:50,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:50,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:15:50,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:50,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:50,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:50,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:50,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:50,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:50,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:50,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:50,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:15:50,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:50,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 13:15:50,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:50,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:15:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:50,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:15:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:50,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:50,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:15:50,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:50,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-28 13:15:50,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:50,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:15:50,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:15:51,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665731435] [2020-10-28 13:15:51,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:51,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:15:51,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351047122] [2020-10-28 13:15:51,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:15:51,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:51,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:15:51,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:15:51,582 INFO L87 Difference]: Start difference. First operand 6799 states and 7755 transitions. Second operand 8 states. [2020-10-28 13:16:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:03,610 INFO L93 Difference]: Finished difference Result 15271 states and 17981 transitions. [2020-10-28 13:16:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:16:03,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 477 [2020-10-28 13:16:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:03,666 INFO L225 Difference]: With dead ends: 15271 [2020-10-28 13:16:03,666 INFO L226 Difference]: Without dead ends: 9389 [2020-10-28 13:16:03,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:16:03,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9389 states. [2020-10-28 13:16:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9389 to 9358. [2020-10-28 13:16:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9358 states. [2020-10-28 13:16:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9358 states to 9358 states and 10650 transitions. [2020-10-28 13:16:03,978 INFO L78 Accepts]: Start accepts. Automaton has 9358 states and 10650 transitions. Word has length 477 [2020-10-28 13:16:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:03,979 INFO L481 AbstractCegarLoop]: Abstraction has 9358 states and 10650 transitions. [2020-10-28 13:16:03,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:16:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 9358 states and 10650 transitions. [2020-10-28 13:16:03,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-28 13:16:03,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:03,986 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:03,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:16:03,987 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:03,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:03,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1054704295, now seen corresponding path program 1 times [2020-10-28 13:16:03,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:03,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079977812] [2020-10-28 13:16:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:05,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:05,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:06,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:06,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 526 [2020-10-28 13:16:06,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:16:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2741 [2020-10-28 13:16:06,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:06,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 482 [2020-10-28 13:16:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:16:06,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:07,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:07,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:07,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:07,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:07,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:07,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:16:07,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:07,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:07,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:07,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:16:07,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 13:16:07,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:07,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:07,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:16:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:07,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:07,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:16:07,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:07,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:16:07,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:07,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:07,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:07,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:16:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:07,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:07,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:16:07,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:16:07,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:07,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 13:16:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:16:07,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-28 13:16:07,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079977812] [2020-10-28 13:16:07,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:16:07,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 13:16:07,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429390352] [2020-10-28 13:16:07,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:16:07,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:07,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:16:07,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:16:07,822 INFO L87 Difference]: Start difference. First operand 9358 states and 10650 transitions. Second operand 5 states. [2020-10-28 13:16:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:17,750 INFO L93 Difference]: Finished difference Result 21211 states and 24755 transitions. [2020-10-28 13:16:17,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:16:17,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 510 [2020-10-28 13:16:17,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:17,794 INFO L225 Difference]: With dead ends: 21211 [2020-10-28 13:16:17,794 INFO L226 Difference]: Without dead ends: 13087 [2020-10-28 13:16:17,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:16:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13087 states. [2020-10-28 13:16:18,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13087 to 11532. [2020-10-28 13:16:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11532 states. [2020-10-28 13:16:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 13285 transitions. [2020-10-28 13:16:18,107 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 13285 transitions. Word has length 510 [2020-10-28 13:16:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:18,108 INFO L481 AbstractCegarLoop]: Abstraction has 11532 states and 13285 transitions. [2020-10-28 13:16:18,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:16:18,108 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 13285 transitions. [2020-10-28 13:16:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-28 13:16:18,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:18,116 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:18,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:16:18,116 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:18,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2011091669, now seen corresponding path program 1 times [2020-10-28 13:16:18,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:18,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370715228] [2020-10-28 13:16:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:18,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:21,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:21,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-28 13:16:21,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:16:21,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3725 [2020-10-28 13:16:21,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:21,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:16:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:16:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:22,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:22,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:22,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:22,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:16:22,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:22,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:22,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:22,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:22,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:16:22,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:22,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:16:22,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:22,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:22,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:16:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:22,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:22,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:16:22,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:16:22,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:22,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:16:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:22,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:16:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:22,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:22,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:22,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:16:22,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:16:22,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:22,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:16:22,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:16:22,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370715228] [2020-10-28 13:16:22,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:22,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:22,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450377008] [2020-10-28 13:16:22,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:22,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:22,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:22,818 INFO L87 Difference]: Start difference. First operand 11532 states and 13285 transitions. Second operand 7 states. [2020-10-28 13:16:33,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:33,605 INFO L93 Difference]: Finished difference Result 25265 states and 29732 transitions. [2020-10-28 13:16:33,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:16:33,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 513 [2020-10-28 13:16:33,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:33,654 INFO L225 Difference]: With dead ends: 25265 [2020-10-28 13:16:33,655 INFO L226 Difference]: Without dead ends: 14967 [2020-10-28 13:16:33,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:16:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14967 states. [2020-10-28 13:16:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14967 to 13709. [2020-10-28 13:16:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13709 states. [2020-10-28 13:16:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13709 states to 13709 states and 16049 transitions. [2020-10-28 13:16:33,986 INFO L78 Accepts]: Start accepts. Automaton has 13709 states and 16049 transitions. Word has length 513 [2020-10-28 13:16:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:33,987 INFO L481 AbstractCegarLoop]: Abstraction has 13709 states and 16049 transitions. [2020-10-28 13:16:33,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 13709 states and 16049 transitions. [2020-10-28 13:16:33,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-28 13:16:33,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:33,994 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:33,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:16:33,995 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:33,995 INFO L82 PathProgramCache]: Analyzing trace with hash 801663409, now seen corresponding path program 1 times [2020-10-28 13:16:33,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:33,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204957628] [2020-10-28 13:16:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:34,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:34,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:36,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:36,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-28 13:16:36,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:16:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2588 [2020-10-28 13:16:36,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:36,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:16:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:16:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 13:16:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:37,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:37,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:37,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:37,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:16:37,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:37,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:37,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:37,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:37,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:16:37,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:16:37,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:37,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:37,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:16:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:37,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:37,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:37,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:16:37,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:16:37,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:37,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:16:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:37,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:16:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:37,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:37,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:37,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:37,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 13:16:37,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:16:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-28 13:16:37,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:37,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:16:37,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 246 proven. 33 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:16:37,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204957628] [2020-10-28 13:16:37,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:37,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:37,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361938791] [2020-10-28 13:16:37,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:37,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:37,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:37,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:37,906 INFO L87 Difference]: Start difference. First operand 13709 states and 16049 transitions. Second operand 7 states. [2020-10-28 13:16:39,669 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:16:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:48,974 INFO L93 Difference]: Finished difference Result 30575 states and 36571 transitions. [2020-10-28 13:16:48,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:16:48,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 530 [2020-10-28 13:16:48,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:49,030 INFO L225 Difference]: With dead ends: 30575 [2020-10-28 13:16:49,030 INFO L226 Difference]: Without dead ends: 17157 [2020-10-28 13:16:49,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:16:49,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17157 states. [2020-10-28 13:16:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17157 to 17111. [2020-10-28 13:16:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17111 states. [2020-10-28 13:16:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17111 states to 17111 states and 19606 transitions. [2020-10-28 13:16:49,484 INFO L78 Accepts]: Start accepts. Automaton has 17111 states and 19606 transitions. Word has length 530 [2020-10-28 13:16:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:49,485 INFO L481 AbstractCegarLoop]: Abstraction has 17111 states and 19606 transitions. [2020-10-28 13:16:49,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 17111 states and 19606 transitions. [2020-10-28 13:16:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-28 13:16:49,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:49,491 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:49,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:16:49,492 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:49,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:49,492 INFO L82 PathProgramCache]: Analyzing trace with hash 31922042, now seen corresponding path program 1 times [2020-10-28 13:16:49,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:49,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894844191] [2020-10-28 13:16:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:51,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:51,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:51,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-28 13:16:51,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:16:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2157 [2020-10-28 13:16:51,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:51,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:16:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:16:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 13:16:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:51,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:51,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:51,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:51,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:51,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:16:51,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:51,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:51,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:52,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:52,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:16:52,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:16:52,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:52,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:52,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:16:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:52,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:16:52,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 13:16:52,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:52,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:16:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:16:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:52,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:52,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:52,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 13:16:52,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:16:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 13:16:52,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:52,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:16:52,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 264 proven. 33 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:16:52,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894844191] [2020-10-28 13:16:52,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:52,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:52,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257086615] [2020-10-28 13:16:52,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:52,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:52,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:52,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:52,817 INFO L87 Difference]: Start difference. First operand 17111 states and 19606 transitions. Second operand 7 states. [2020-10-28 13:17:05,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:05,992 INFO L93 Difference]: Finished difference Result 42610 states and 51158 transitions. [2020-10-28 13:17:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:17:05,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 539 [2020-10-28 13:17:05,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:06,082 INFO L225 Difference]: With dead ends: 42610 [2020-10-28 13:17:06,082 INFO L226 Difference]: Without dead ends: 25812 [2020-10-28 13:17:06,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:17:06,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25812 states. [2020-10-28 13:17:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25812 to 25806. [2020-10-28 13:17:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25806 states. [2020-10-28 13:17:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25806 states to 25806 states and 30727 transitions. [2020-10-28 13:17:06,780 INFO L78 Accepts]: Start accepts. Automaton has 25806 states and 30727 transitions. Word has length 539 [2020-10-28 13:17:06,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:06,782 INFO L481 AbstractCegarLoop]: Abstraction has 25806 states and 30727 transitions. [2020-10-28 13:17:06,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 25806 states and 30727 transitions. [2020-10-28 13:17:06,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2020-10-28 13:17:06,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:06,800 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:17:06,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:17:06,801 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:06,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:06,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1375919707, now seen corresponding path program 1 times [2020-10-28 13:17:06,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:06,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766068279] [2020-10-28 13:17:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:07,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:08,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:12,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:12,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 737 [2020-10-28 13:17:12,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:17:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 13:17:12,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:12,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:17:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-28 13:17:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 13:17:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:12,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:12,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:12,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:12,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:12,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:17:12,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:12,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:12,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:12,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:12,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:17:12,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:12,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:17:12,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:12,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:12,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:12,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:17:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:12,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:12,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:12,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:17:12,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:17:12,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:12,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:12,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:12,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:17:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:12,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:12,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:17:12,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:17:12,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:12,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:17:12,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:12,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-28 13:17:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:12,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:12,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:12,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 13:17:12,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:12,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 13:17:12,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:12,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 13:17:12,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 409 proven. 34 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-28 13:17:13,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766068279] [2020-10-28 13:17:13,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:13,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:17:13,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315419379] [2020-10-28 13:17:13,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:17:13,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:13,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:17:13,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:17:13,098 INFO L87 Difference]: Start difference. First operand 25806 states and 30727 transitions. Second operand 6 states. [2020-10-28 13:17:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:21,764 INFO L93 Difference]: Finished difference Result 59205 states and 71481 transitions. [2020-10-28 13:17:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:17:21,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 719 [2020-10-28 13:17:21,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:21,885 INFO L225 Difference]: With dead ends: 59205 [2020-10-28 13:17:21,885 INFO L226 Difference]: Without dead ends: 35247 [2020-10-28 13:17:21,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:17:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35247 states. [2020-10-28 13:17:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35247 to 35213. [2020-10-28 13:17:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35213 states. [2020-10-28 13:17:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35213 states to 35213 states and 41981 transitions. [2020-10-28 13:17:22,852 INFO L78 Accepts]: Start accepts. Automaton has 35213 states and 41981 transitions. Word has length 719 [2020-10-28 13:17:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:22,853 INFO L481 AbstractCegarLoop]: Abstraction has 35213 states and 41981 transitions. [2020-10-28 13:17:22,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:17:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 35213 states and 41981 transitions. [2020-10-28 13:17:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2020-10-28 13:17:22,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:22,882 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:17:22,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:17:22,883 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:22,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1195530677, now seen corresponding path program 1 times [2020-10-28 13:17:22,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:22,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318689658] [2020-10-28 13:17:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:25,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:28,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:28,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 750 [2020-10-28 13:17:28,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:17:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-28 13:17:28,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:28,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 538 [2020-10-28 13:17:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-28 13:17:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:28,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:28,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:28,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:28,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:28,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:17:28,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:28,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:28,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:28,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:28,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:28,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:28,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:28,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:28,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:17:28,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:28,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:17:28,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:28,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:28,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:28,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:28,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:28,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:28,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:17:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:28,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:28,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:28,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:17:28,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:17:28,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:28,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:28,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:17:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:28,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:28,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 13:17:28,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:28,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:17:28,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:28,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 13:17:28,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:28,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-10-28 13:17:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:28,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:28,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 13:17:28,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:28,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 13:17:28,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:28,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:28,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-28 13:17:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 535 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-28 13:17:29,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318689658] [2020-10-28 13:17:29,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:29,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:29,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394491638] [2020-10-28 13:17:29,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:29,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:29,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:29,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:29,311 INFO L87 Difference]: Start difference. First operand 35213 states and 41981 transitions. Second operand 7 states. [2020-10-28 13:17:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:43,055 INFO L93 Difference]: Finished difference Result 73191 states and 87872 transitions. [2020-10-28 13:17:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:17:43,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 732 [2020-10-28 13:17:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:43,155 INFO L225 Difference]: With dead ends: 73191 [2020-10-28 13:17:43,155 INFO L226 Difference]: Without dead ends: 37612 [2020-10-28 13:17:43,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:17:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37612 states. [2020-10-28 13:17:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37612 to 37303. [2020-10-28 13:17:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37303 states. [2020-10-28 13:17:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37303 states to 37303 states and 43042 transitions. [2020-10-28 13:17:43,878 INFO L78 Accepts]: Start accepts. Automaton has 37303 states and 43042 transitions. Word has length 732 [2020-10-28 13:17:43,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:43,878 INFO L481 AbstractCegarLoop]: Abstraction has 37303 states and 43042 transitions. [2020-10-28 13:17:43,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 37303 states and 43042 transitions. [2020-10-28 13:17:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2020-10-28 13:17:43,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:43,907 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:17:43,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:17:43,907 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1714821511, now seen corresponding path program 1 times [2020-10-28 13:17:43,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:43,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164376203] [2020-10-28 13:17:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking...