/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/systemc/pipeline.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:33:32,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:33:32,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:33:32,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:33:32,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:33:32,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:33:32,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:33:32,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:33:32,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:33:32,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:33:32,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:33:32,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:33:32,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:33:32,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:33:32,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:33:32,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:33:32,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:33:32,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:33:32,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:33:32,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:33:32,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:33:32,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:33:32,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:33:32,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:33:32,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:33:32,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:33:32,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:33:32,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:33:32,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:33:32,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:33:32,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:33:32,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:33:32,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:33:32,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:33:32,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:33:32,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:33:32,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:33:32,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:33:32,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:33:32,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:33:32,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:33:32,497 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 [2020-10-27 06:33:32,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:33:32,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:33:32,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:33:32,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:33:32,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:33:32,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:33:32,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:33:32,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:33:32,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:33:32,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:33:32,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:33:32,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:33:32,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:33:32,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:33:32,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:33:32,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:33:32,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:33:32,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:33:32,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:33:32,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:33:32,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:33:32,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:33:32,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:33:32,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:33:32,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:33:32,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:33:32,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:33:32,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:33:32,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:33:32,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:33:32,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:33:33,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:33:33,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:33:33,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:33:33,011 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:33:33,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pipeline.cil-1.c [2020-10-27 06:33:33,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ca5dc930/fe1ea37b8f974470b0a94192e990cb6b/FLAG3c21e7ed8 [2020-10-27 06:33:33,810 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:33:33,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pipeline.cil-1.c [2020-10-27 06:33:33,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ca5dc930/fe1ea37b8f974470b0a94192e990cb6b/FLAG3c21e7ed8 [2020-10-27 06:33:34,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ca5dc930/fe1ea37b8f974470b0a94192e990cb6b [2020-10-27 06:33:34,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:33:34,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:33:34,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:33:34,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:33:34,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:33:34,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:33:34" (1/1) ... [2020-10-27 06:33:34,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8407dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34, skipping insertion in model container [2020-10-27 06:33:34,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:33:34" (1/1) ... [2020-10-27 06:33:34,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:33:34,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:33:34,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:33:34,441 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:33:34,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:33:34,617 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:33:34,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34 WrapperNode [2020-10-27 06:33:34,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:33:34,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:33:34,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:33:34,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:33:34,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34" (1/1) ... [2020-10-27 06:33:34,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34" (1/1) ... [2020-10-27 06:33:34,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34" (1/1) ... [2020-10-27 06:33:34,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34" (1/1) ... [2020-10-27 06:33:34,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34" (1/1) ... [2020-10-27 06:33:34,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34" (1/1) ... [2020-10-27 06:33:34,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34" (1/1) ... [2020-10-27 06:33:34,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:33:34,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:33:34,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:33:34,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:33:34,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34" (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 [2020-10-27 06:33:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:33:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:33:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:33:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-27 06:33:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure N_generate [2020-10-27 06:33:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure S1_addsub [2020-10-27 06:33:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure S2_presdbl [2020-10-27 06:33:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure S3_zero [2020-10-27 06:33:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure D_print [2020-10-27 06:33:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-27 06:33:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-27 06:33:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:33:34,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:33:34,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:33:34,802 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:33:34,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:33:34,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 06:33:34,802 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-27 06:33:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure N_generate [2020-10-27 06:33:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure S1_addsub [2020-10-27 06:33:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure S2_presdbl [2020-10-27 06:33:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure S3_zero [2020-10-27 06:33:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure D_print [2020-10-27 06:33:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-27 06:33:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-27 06:33:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:33:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:33:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:33:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:33:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:33:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:33:34,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:33:35,890 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:33:35,890 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 06:33:35,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:33:35 BoogieIcfgContainer [2020-10-27 06:33:35,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:33:35,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:33:35,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:33:35,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:33:35,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:33:34" (1/3) ... [2020-10-27 06:33:35,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493ed534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:33:35, skipping insertion in model container [2020-10-27 06:33:35,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:33:34" (2/3) ... [2020-10-27 06:33:35,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493ed534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:33:35, skipping insertion in model container [2020-10-27 06:33:35,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:33:35" (3/3) ... [2020-10-27 06:33:35,906 INFO L111 eAbstractionObserver]: Analyzing ICFG pipeline.cil-1.c [2020-10-27 06:33:35,919 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:33:35,925 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:33:35,939 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:33:35,980 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:33:35,980 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:33:35,980 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:33:35,980 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:33:35,980 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:33:35,980 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:33:35,981 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:33:35,981 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:33:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-10-27 06:33:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 06:33:36,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:33:36,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:33:36,018 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:33:36,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:33:36,025 INFO L82 PathProgramCache]: Analyzing trace with hash 252079489, now seen corresponding path program 1 times [2020-10-27 06:33:36,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:33:36,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361354726] [2020-10-27 06:33:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:33:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:33:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:36,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:37,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:37,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:37,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:38,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:38,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:38,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:41,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:33:41,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 06:33:41,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 06:33:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 06:33:41,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:33:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:33:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:33:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 06:33:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 06:33:41,660 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 06:33:41,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:33:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:33:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:41,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:33:41,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:33:41,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:33:41,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:33:41,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:33:41,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:33:41,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:33:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:33:41,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:33:41,853 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:33:41,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:33:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:33:41,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:41,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:41,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:41,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:41,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:33:42,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 06:33:42,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:33:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-27 06:33:42,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:33:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:33:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 06:33:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 06:33:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:33:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 06:33:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:33:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:42,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:33:42,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 06:33:42,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:33:42,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 06:33:42,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:33:42,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:33:42,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 06:33:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 06:33:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 06:33:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 06:33:42,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361354726] [2020-10-27 06:33:42,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:33:42,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 06:33:42,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812917829] [2020-10-27 06:33:42,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 06:33:42,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:33:42,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 06:33:42,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:33:42,670 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 7 states. [2020-10-27 06:33:42,999 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 06:33:45,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:33:45,316 INFO L93 Difference]: Finished difference Result 428 states and 732 transitions. [2020-10-27 06:33:45,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:33:45,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-27 06:33:45,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:33:45,349 INFO L225 Difference]: With dead ends: 428 [2020-10-27 06:33:45,349 INFO L226 Difference]: Without dead ends: 248 [2020-10-27 06:33:45,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:33:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-27 06:33:45,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 207. [2020-10-27 06:33:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-27 06:33:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 346 transitions. [2020-10-27 06:33:45,450 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 346 transitions. Word has length 100 [2020-10-27 06:33:45,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:33:45,451 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 346 transitions. [2020-10-27 06:33:45,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 06:33:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 346 transitions. [2020-10-27 06:33:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 06:33:45,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:33:45,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 06:33:45,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:33:45,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:33:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:33:45,476 INFO L82 PathProgramCache]: Analyzing trace with hash 2080695139, now seen corresponding path program 1 times [2020-10-27 06:33:45,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:33:45,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575739854] [2020-10-27 06:33:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:33:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:33:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:45,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:45,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:45,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:45,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:45,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:45,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:46,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:46,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:46,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:47,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:47,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:47,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:47,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:50,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:33:50,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 06:33:50,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 06:33:50,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 06:33:50,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:33:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:33:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:33:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 06:33:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:33:50,912 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 06:33:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:33:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:33:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:50,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:33:50,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:33:50,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:33:50,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:33:50,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:33:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:33:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:33:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:33:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:33:51,096 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:33:51,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:33:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:33:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:33:56,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 06:33:56,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:33:56,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 06:33:56,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:33:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:33:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 06:33:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 06:33:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:33:56,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:33:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:33:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:33:56,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 06:33:56,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:33:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:33:56,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:33:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:33:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:33:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:33:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:33:56,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 06:33:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:33:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:33:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:01,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:01,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 06:34:01,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:34:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:34:01,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:34:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 06:34:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 06:34:01,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:34:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:01,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:01,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 06:34:01,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:01,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:34:01,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:34:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:34:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:34:01,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 06:34:01,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575739854] [2020-10-27 06:34:01,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:34:01,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 06:34:01,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583276886] [2020-10-27 06:34:01,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 06:34:01,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:34:01,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 06:34:01,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:34:01,421 INFO L87 Difference]: Start difference. First operand 207 states and 346 transitions. Second operand 7 states. [2020-10-27 06:34:01,679 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 06:34:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:34:02,600 INFO L93 Difference]: Finished difference Result 509 states and 871 transitions. [2020-10-27 06:34:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:34:02,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-27 06:34:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:34:02,604 INFO L225 Difference]: With dead ends: 509 [2020-10-27 06:34:02,604 INFO L226 Difference]: Without dead ends: 309 [2020-10-27 06:34:02,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 06:34:02,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-27 06:34:02,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 259. [2020-10-27 06:34:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-27 06:34:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 425 transitions. [2020-10-27 06:34:02,643 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 425 transitions. Word has length 202 [2020-10-27 06:34:02,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:34:02,644 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 425 transitions. [2020-10-27 06:34:02,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 06:34:02,644 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 425 transitions. [2020-10-27 06:34:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 06:34:02,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:34:02,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 06:34:02,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:34:02,648 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:34:02,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:34:02,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1027140629, now seen corresponding path program 1 times [2020-10-27 06:34:02,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:34:02,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155946345] [2020-10-27 06:34:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:34:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:02,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:02,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:02,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:02,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:02,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:03,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:03,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:04,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:04,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:07,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:07,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 06:34:07,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 06:34:07,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 06:34:07,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:07,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:34:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 06:34:07,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:08,027 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 06:34:08,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:34:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:08,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:08,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:34:08,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:08,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:34:08,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:34:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:34:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:34:08,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:08,199 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:34:08,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:34:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:08,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:08,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:08,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:08,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:08,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:13,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 06:34:13,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 06:34:13,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 06:34:13,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 06:34:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:34:13,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:13,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:34:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:13,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:13,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 06:34:13,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:34:13,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:34:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 06:34:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:13,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 06:34:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:13,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:18,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:18,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 06:34:18,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:34:18,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:34:18,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 06:34:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:34:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:34:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:18,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:18,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 06:34:18,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:34:18,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:34:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 06:34:18,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-27 06:34:18,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155946345] [2020-10-27 06:34:18,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:34:18,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 06:34:18,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204342685] [2020-10-27 06:34:18,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 06:34:18,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:34:18,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 06:34:18,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 06:34:18,536 INFO L87 Difference]: Start difference. First operand 259 states and 425 transitions. Second operand 10 states. [2020-10-27 06:34:18,826 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 06:34:19,110 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 06:34:19,984 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 06:34:20,305 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 06:34:21,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:34:21,432 INFO L93 Difference]: Finished difference Result 964 states and 1601 transitions. [2020-10-27 06:34:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 06:34:21,432 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 202 [2020-10-27 06:34:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:34:21,438 INFO L225 Difference]: With dead ends: 964 [2020-10-27 06:34:21,438 INFO L226 Difference]: Without dead ends: 712 [2020-10-27 06:34:21,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:34:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-10-27 06:34:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 470. [2020-10-27 06:34:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-27 06:34:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 759 transitions. [2020-10-27 06:34:21,534 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 759 transitions. Word has length 202 [2020-10-27 06:34:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:34:21,536 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 759 transitions. [2020-10-27 06:34:21,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 06:34:21,536 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 759 transitions. [2020-10-27 06:34:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 06:34:21,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:34:21,541 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:34:21,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:34:21,542 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:34:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:34:21,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1156806354, now seen corresponding path program 1 times [2020-10-27 06:34:21,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:34:21,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474507846] [2020-10-27 06:34:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:34:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:21,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:22,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:22,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:26,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:26,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 06:34:26,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-27 06:34:26,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 06:34:26,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:26,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:34:26,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:34:26,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 06:34:26,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:26,832 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 06:34:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:34:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:34:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:34:26,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:34:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:34:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:34:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:27,011 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:34:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:34:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:32,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 06:34:32,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:34:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:34:32,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:34:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 06:34:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 06:34:32,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:32,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:34:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:32,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:32,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 06:34:32,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:32,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:34:32,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:34:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:34:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:34:32,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:32,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 06:34:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:32,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:37,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:37,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 06:34:37,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 06:34:37,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:34:37,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 06:34:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 06:34:37,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:37,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:34:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:37,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:37,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:37,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 06:34:37,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:34:37,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 06:34:37,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:37,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:37,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:34:37,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 06:34:37,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:37,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:34:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:37,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:37,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:34:37,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:37,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:34:37,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:34:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:34:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:34:37,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-27 06:34:37,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474507846] [2020-10-27 06:34:37,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:34:37,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 06:34:37,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071116279] [2020-10-27 06:34:37,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 06:34:37,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:34:37,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 06:34:37,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-27 06:34:37,343 INFO L87 Difference]: Start difference. First operand 470 states and 759 transitions. Second operand 11 states. [2020-10-27 06:34:37,655 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 06:34:38,691 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 06:34:39,027 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 06:34:40,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:34:40,959 INFO L93 Difference]: Finished difference Result 1611 states and 2649 transitions. [2020-10-27 06:34:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 06:34:40,959 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 214 [2020-10-27 06:34:40,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:34:40,972 INFO L225 Difference]: With dead ends: 1611 [2020-10-27 06:34:40,973 INFO L226 Difference]: Without dead ends: 1148 [2020-10-27 06:34:40,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2020-10-27 06:34:40,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2020-10-27 06:34:41,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 605. [2020-10-27 06:34:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-10-27 06:34:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 892 transitions. [2020-10-27 06:34:41,080 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 892 transitions. Word has length 214 [2020-10-27 06:34:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:34:41,080 INFO L481 AbstractCegarLoop]: Abstraction has 605 states and 892 transitions. [2020-10-27 06:34:41,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 06:34:41,080 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 892 transitions. [2020-10-27 06:34:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-27 06:34:41,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:34:41,086 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:34:41,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:34:41,086 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:34:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:34:41,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1962028922, now seen corresponding path program 1 times [2020-10-27 06:34:41,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:34:41,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150103309] [2020-10-27 06:34:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:34:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:41,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:42,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:43,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:46,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:46,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-27 06:34:46,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:34:46,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 06:34:46,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:34:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:34:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 06:34:46,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:46,448 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 06:34:46,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:34:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:46,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:46,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:46,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:34:46,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:34:46,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:34:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:34:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:34:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:46,630 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:34:46,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:34:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:46,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:46,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:46,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:46,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:47,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:47,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:51,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:51,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 06:34:51,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:34:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:34:51,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 06:34:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 06:34:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:34:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:51,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:51,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:51,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 06:34:51,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:34:51,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:34:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 06:34:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 06:34:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:51,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:51,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:51,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:51,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:51,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:51,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:52,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:54,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:54,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:56,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:56,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 06:34:56,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 06:34:56,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:34:56,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 06:34:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 06:34:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:34:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:56,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:56,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 06:34:56,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:34:56,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 06:34:56,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:34:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:34:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 06:34:56,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:56,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:34:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:56,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:57,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:57,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:34:57,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:57,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:34:57,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:34:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:34:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:34:57,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:34:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:34:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:34:57,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:34:57,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:34:57,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:34:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:34:57,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:34:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:34:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:34:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:34:57,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:34:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 06:34:57,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150103309] [2020-10-27 06:34:57,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:34:57,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 06:34:57,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437542461] [2020-10-27 06:34:57,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 06:34:57,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:34:57,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 06:34:57,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-27 06:34:57,191 INFO L87 Difference]: Start difference. First operand 605 states and 892 transitions. Second operand 14 states. [2020-10-27 06:34:57,517 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 06:34:59,143 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 06:34:59,559 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 06:34:59,859 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 06:35:00,310 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 06:35:00,609 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 06:35:01,256 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 06:35:01,619 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 06:35:23,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:35:23,804 INFO L93 Difference]: Finished difference Result 8197 states and 13922 transitions. [2020-10-27 06:35:23,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2020-10-27 06:35:23,804 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 219 [2020-10-27 06:35:23,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:35:23,896 INFO L225 Difference]: With dead ends: 8197 [2020-10-27 06:35:23,897 INFO L226 Difference]: Without dead ends: 7599 [2020-10-27 06:35:23,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8536 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3134, Invalid=17172, Unknown=0, NotChecked=0, Total=20306 [2020-10-27 06:35:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7599 states. [2020-10-27 06:35:24,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7599 to 3023. [2020-10-27 06:35:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3023 states. [2020-10-27 06:35:24,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 4699 transitions. [2020-10-27 06:35:24,488 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 4699 transitions. Word has length 219 [2020-10-27 06:35:24,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:35:24,488 INFO L481 AbstractCegarLoop]: Abstraction has 3023 states and 4699 transitions. [2020-10-27 06:35:24,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 06:35:24,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 4699 transitions. [2020-10-27 06:35:24,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-27 06:35:24,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:35:24,520 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:35:24,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:35:24,521 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:35:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:35:24,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1400841758, now seen corresponding path program 1 times [2020-10-27 06:35:24,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:35:24,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375983421] [2020-10-27 06:35:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:35:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:35:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:24,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:24,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:24,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:24,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:24,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:26,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:26,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:29,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:35:29,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 06:35:29,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 06:35:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 06:35:29,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:35:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:35:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:35:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 06:35:29,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:35:29,844 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 06:35:29,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:35:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:35:29,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:29,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:35:29,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:35:29,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:35:29,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:35:29,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:35:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:35:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:35:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:35:29,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:35:30,014 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:35:30,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:35:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:35:30,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:30,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:30,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:30,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:30,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:31,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:35:35,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 06:35:35,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:35:35,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 06:35:35,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:35:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:35:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:35:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 06:35:35,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:35:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:35:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:35:35,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:35:35,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 06:35:35,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:35:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:35:35,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:35:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:35:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:35:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 06:35:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:35:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 06:35:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:35:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:35,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:40,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:35:40,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 06:35:40,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:35:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:35:40,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:35:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:35:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 06:35:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 06:35:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:35:40,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:35:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:35:40,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:40,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:35:40,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 06:35:40,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:35:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 06:35:40,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:35:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:35:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:35:40,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 06:35:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:35:40,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:35:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:35:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:35:40,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:35:40,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:35:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:35:40,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:35:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:35:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:35:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:35:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:35:40,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:35:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:35:40,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:40,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:35:40,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:35:40,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:35:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:35:40,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:35:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:35:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:35:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:35:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:35:40,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 06:35:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:35:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:35:40,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:35:40,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:35:40,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:35:40,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:35:40,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:35:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:35:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:35:40,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:35:40,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 06:35:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:35:40,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:35:40,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:35:40,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:35:40,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:35:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:35:40,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:35:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:35:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:35:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:35:40,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:35:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 52 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 06:35:40,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375983421] [2020-10-27 06:35:40,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:35:40,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 06:35:40,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471711772] [2020-10-27 06:35:40,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 06:35:40,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:35:40,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 06:35:40,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-27 06:35:40,590 INFO L87 Difference]: Start difference. First operand 3023 states and 4699 transitions. Second operand 15 states. [2020-10-27 06:35:40,885 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 06:35:41,204 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 06:35:43,380 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 06:35:43,933 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 06:35:44,556 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 06:36:00,050 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-27 06:36:27,837 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2020-10-27 06:36:50,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:36:50,513 INFO L93 Difference]: Finished difference Result 115334 states and 211317 transitions. [2020-10-27 06:36:50,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2020-10-27 06:36:50,515 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 229 [2020-10-27 06:36:50,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:36:55,532 INFO L225 Difference]: With dead ends: 115334 [2020-10-27 06:36:55,532 INFO L226 Difference]: Without dead ends: 112318