/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:44:29,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:44:29,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:44:29,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:44:29,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:44:29,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:44:29,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:44:29,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:44:29,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:44:29,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:44:29,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:44:29,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:44:29,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:44:29,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:44:29,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:44:29,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:44:29,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:44:29,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:44:29,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:44:29,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:44:29,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:44:29,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:44:29,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:44:29,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:44:29,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:44:29,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:44:29,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:44:29,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:44:29,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:44:29,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:44:29,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:44:29,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:44:29,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:44:29,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:44:29,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:44:29,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:44:29,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:44:29,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:44:29,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:44:29,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:44:29,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:44:29,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:44:29,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:44:29,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:44:29,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:44:29,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:44:29,636 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:44:29,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:44:29,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:44:29,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:44:29,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:44:29,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:44:29,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:44:29,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:44:29,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:44:29,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:44:29,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:44:29,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:44:29,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:44:29,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:44:29,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:44:29,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:44:29,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:44:29,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:44:29,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:44:29,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:44:29,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:44:29,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:44:29,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:44:29,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:44:29,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:44:29,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:44:29,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:44:30,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:44:30,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:44:30,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:44:30,032 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:44:30,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label58.c [2020-10-28 12:44:30,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0dabd124/f3a7e6365b0d494489954e355e912f99/FLAGd2a3c823f [2020-10-28 12:44:31,234 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:44:31,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label58.c [2020-10-28 12:44:31,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0dabd124/f3a7e6365b0d494489954e355e912f99/FLAGd2a3c823f [2020-10-28 12:44:31,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0dabd124/f3a7e6365b0d494489954e355e912f99 [2020-10-28 12:44:31,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:44:31,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:44:31,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:44:31,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:44:31,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:44:31,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:44:31" (1/1) ... [2020-10-28 12:44:31,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75471103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:31, skipping insertion in model container [2020-10-28 12:44:31,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:44:31" (1/1) ... [2020-10-28 12:44:31,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:44:31,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:44:33,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:44:33,650 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:44:34,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:44:34,544 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:44:34,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:34 WrapperNode [2020-10-28 12:44:34,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:44:34,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:44:34,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:44:34,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:44:34,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:34" (1/1) ... [2020-10-28 12:44:34,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:34" (1/1) ... [2020-10-28 12:44:34,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:34" (1/1) ... [2020-10-28 12:44:34,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:34" (1/1) ... [2020-10-28 12:44:34,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:34" (1/1) ... [2020-10-28 12:44:34,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:34" (1/1) ... [2020-10-28 12:44:34,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:34" (1/1) ... [2020-10-28 12:44:34,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:44:34,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:44:34,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:44:34,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:44:34,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:34" (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 [2020-10-28 12:44:35,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:44:35,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:44:35,056 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:44:35,056 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:44:35,056 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:44:35,056 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:44:35,056 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:44:35,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:44:35,057 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:44:35,057 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:44:35,057 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:44:35,057 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:44:35,057 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:44:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:44:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:44:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:44:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:44:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:44:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:44:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:44:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:44:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:44:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:44:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:44:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:44:44,714 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:44:44,719 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:44:44,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:44:44 BoogieIcfgContainer [2020-10-28 12:44:44,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:44:44,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:44:44,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:44:44,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:44:44,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:44:31" (1/3) ... [2020-10-28 12:44:44,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3439969a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:44:44, skipping insertion in model container [2020-10-28 12:44:44,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:34" (2/3) ... [2020-10-28 12:44:44,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3439969a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:44:44, skipping insertion in model container [2020-10-28 12:44:44,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:44:44" (3/3) ... [2020-10-28 12:44:44,733 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label58.c [2020-10-28 12:44:44,744 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:44:44,749 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:44:44,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:44:44,798 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:44:44,798 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:44:44,798 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:44:44,798 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:44:44,798 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:44:44,799 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:44:44,799 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:44:44,799 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:44:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:44:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 12:44:44,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:44:44,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:44:44,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:44:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:44:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1772765346, now seen corresponding path program 1 times [2020-10-28 12:44:44,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:44:44,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489332653] [2020-10-28 12:44:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:44:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:45,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:45,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:45,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 12:44:45,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:45,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-28 12:44:45,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:45,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:45,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:44:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:44:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 12:44:45,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:44:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:44:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:45,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:45,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:44:45,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:45,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:44:45,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:45,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:44:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:44:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:44:45,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:44:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:44:45,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489332653] [2020-10-28 12:44:45,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:44:45,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:44:45,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196659897] [2020-10-28 12:44:45,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:44:45,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:44:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:44:45,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:44:45,847 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:45:02,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:45:02,581 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-28 12:45:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:45:02,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-28 12:45:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:45:02,625 INFO L225 Difference]: With dead ends: 3235 [2020-10-28 12:45:02,626 INFO L226 Difference]: Without dead ends: 2027 [2020-10-28 12:45:02,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:45:02,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-28 12:45:02,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-28 12:45:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-28 12:45:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-28 12:45:02,861 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 19 [2020-10-28 12:45:02,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:45:02,862 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-28 12:45:02,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:45:02,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-28 12:45:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 12:45:02,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:45:02,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:45:02,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:45:02,872 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:45:02,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:45:02,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1019460183, now seen corresponding path program 1 times [2020-10-28 12:45:02,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:45:02,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949035861] [2020-10-28 12:45:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:45:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:03,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:04,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:04,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:45:04,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:45:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-28 12:45:04,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:04,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:04,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:45:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:45:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:45:04,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:45:04,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:45:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:04,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:04,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:45:04,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:45:04,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:04,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:45:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:45:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:45:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:45:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:45:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:04,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:04,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:45:04,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 12:45:04,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:04,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:45:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:45:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:45:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:45:04,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949035861] [2020-10-28 12:45:04,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:45:04,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:45:04,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017881698] [2020-10-28 12:45:04,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:45:04,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:45:04,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:45:04,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:45:04,667 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-28 12:45:04,822 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:45:26,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:45:26,518 INFO L93 Difference]: Finished difference Result 5806 states and 9569 transitions. [2020-10-28 12:45:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:45:26,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-28 12:45:26,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:45:26,554 INFO L225 Difference]: With dead ends: 5806 [2020-10-28 12:45:26,554 INFO L226 Difference]: Without dead ends: 3802 [2020-10-28 12:45:26,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:45:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2020-10-28 12:45:26,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3722. [2020-10-28 12:45:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2020-10-28 12:45:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5303 transitions. [2020-10-28 12:45:26,700 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5303 transitions. Word has length 94 [2020-10-28 12:45:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:45:26,701 INFO L481 AbstractCegarLoop]: Abstraction has 3722 states and 5303 transitions. [2020-10-28 12:45:26,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:45:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5303 transitions. [2020-10-28 12:45:26,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 12:45:26,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:45:26,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:45:26,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:45:26,713 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:45:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:45:26,714 INFO L82 PathProgramCache]: Analyzing trace with hash 213177157, now seen corresponding path program 1 times [2020-10-28 12:45:26,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:45:26,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005909070] [2020-10-28 12:45:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:45:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:26,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:27,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:27,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 12:45:27,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:45:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-10-28 12:45:27,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:27,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:45:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:45:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:45:28,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 81 [2020-10-28 12:45:28,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:45:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:28,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:28,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:45:28,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:45:28,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:28,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:45:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:45:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:45:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:45:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:45:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:28,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:28,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:45:28,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-28 12:45:28,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:28,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:45:28,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:45:28,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:45:28,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:45:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:45:28,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005909070] [2020-10-28 12:45:28,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:45:28,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:45:28,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404043394] [2020-10-28 12:45:28,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:45:28,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:45:28,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:45:28,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:45:28,777 INFO L87 Difference]: Start difference. First operand 3722 states and 5303 transitions. Second operand 7 states. [2020-10-28 12:45:50,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:45:50,236 INFO L93 Difference]: Finished difference Result 8520 states and 12179 transitions. [2020-10-28 12:45:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:45:50,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-28 12:45:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:45:50,273 INFO L225 Difference]: With dead ends: 8520 [2020-10-28 12:45:50,273 INFO L226 Difference]: Without dead ends: 4804 [2020-10-28 12:45:50,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:45:50,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4804 states. [2020-10-28 12:45:50,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4804 to 4572. [2020-10-28 12:45:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4572 states. [2020-10-28 12:45:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 6234 transitions. [2020-10-28 12:45:50,480 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 6234 transitions. Word has length 124 [2020-10-28 12:45:50,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:45:50,484 INFO L481 AbstractCegarLoop]: Abstraction has 4572 states and 6234 transitions. [2020-10-28 12:45:50,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:45:50,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 6234 transitions. [2020-10-28 12:45:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 12:45:50,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:45:50,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:45:50,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:45:50,487 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:45:50,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:45:50,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1814688505, now seen corresponding path program 1 times [2020-10-28 12:45:50,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:45:50,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497901064] [2020-10-28 12:45:50,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:45:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:50,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:52,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:52,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:45:52,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:45:52,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-10-28 12:45:52,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:52,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:45:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:45:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:45:52,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:45:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:52,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:52,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:52,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:45:52,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:45:52,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:52,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:45:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:45:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:45:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:45:52,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:45:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:52,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 12:45:52,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-28 12:45:52,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:52,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:45:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:45:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:45:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:45:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:45:52,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497901064] [2020-10-28 12:45:52,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:45:52,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:45:52,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769359840] [2020-10-28 12:45:52,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:45:52,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:45:52,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:45:52,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:45:52,831 INFO L87 Difference]: Start difference. First operand 4572 states and 6234 transitions. Second operand 8 states. [2020-10-28 12:46:20,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:20,922 INFO L93 Difference]: Finished difference Result 9263 states and 12636 transitions. [2020-10-28 12:46:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:46:20,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-10-28 12:46:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:20,954 INFO L225 Difference]: With dead ends: 9263 [2020-10-28 12:46:20,954 INFO L226 Difference]: Without dead ends: 4697 [2020-10-28 12:46:20,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:46:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2020-10-28 12:46:21,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4577. [2020-10-28 12:46:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4577 states. [2020-10-28 12:46:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6192 transitions. [2020-10-28 12:46:21,106 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6192 transitions. Word has length 134 [2020-10-28 12:46:21,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:21,108 INFO L481 AbstractCegarLoop]: Abstraction has 4577 states and 6192 transitions. [2020-10-28 12:46:21,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:46:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6192 transitions. [2020-10-28 12:46:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 12:46:21,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:21,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:46:21,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:46:21,111 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:21,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:21,112 INFO L82 PathProgramCache]: Analyzing trace with hash 539037884, now seen corresponding path program 1 times [2020-10-28 12:46:21,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:21,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820289882] [2020-10-28 12:46:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:21,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:21,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:46:21,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:46:21,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-28 12:46:21,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:21,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:46:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 12:46:21,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:22,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:22,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:22,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:22,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:46:22,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:22,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:46:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:46:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:22,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:22,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:22,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:22,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:46:22,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:22,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 12:46:22,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:22,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:22,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:22,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:22,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:46:22,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:46:22,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820289882] [2020-10-28 12:46:22,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:46:22,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:46:22,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018972854] [2020-10-28 12:46:22,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:46:22,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:22,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:46:22,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:46:22,346 INFO L87 Difference]: Start difference. First operand 4577 states and 6192 transitions. Second operand 5 states. [2020-10-28 12:46:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:41,582 INFO L93 Difference]: Finished difference Result 10896 states and 15640 transitions. [2020-10-28 12:46:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:46:41,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-28 12:46:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:41,624 INFO L225 Difference]: With dead ends: 10896 [2020-10-28 12:46:41,624 INFO L226 Difference]: Without dead ends: 7128 [2020-10-28 12:46:41,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:46:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7128 states. [2020-10-28 12:46:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7128 to 7093. [2020-10-28 12:46:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7093 states. [2020-10-28 12:46:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 9158 transitions. [2020-10-28 12:46:41,830 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 9158 transitions. Word has length 148 [2020-10-28 12:46:41,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:41,831 INFO L481 AbstractCegarLoop]: Abstraction has 7093 states and 9158 transitions. [2020-10-28 12:46:41,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:46:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 9158 transitions. [2020-10-28 12:46:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 12:46:41,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:41,839 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:46:41,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:46:41,840 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:41,840 INFO L82 PathProgramCache]: Analyzing trace with hash 125719650, now seen corresponding path program 1 times [2020-10-28 12:46:41,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:41,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072114561] [2020-10-28 12:46:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:42,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:42,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:44,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:44,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 12:46:44,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:46:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3032 [2020-10-28 12:46:44,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:44,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:46:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:46:44,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:45,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:45,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:45,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:45,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:45,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:45,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:46:45,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:45,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:45,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:46:45,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:45,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:46:45,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:45,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:45,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:45,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:46:45,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:45,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:46:45,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:45,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:45,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:46:45,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:45,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:46:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:45,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:45,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:45,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:46:45,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:45,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:46:45,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:45,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:46:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:46:45,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072114561] [2020-10-28 12:46:45,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:46:45,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:46:45,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644631424] [2020-10-28 12:46:45,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:45,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:45,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:45,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:45,889 INFO L87 Difference]: Start difference. First operand 7093 states and 9158 transitions. Second operand 7 states. [2020-10-28 12:47:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:18,992 INFO L93 Difference]: Finished difference Result 14658 states and 20557 transitions. [2020-10-28 12:47:18,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:47:18,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-28 12:47:18,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:19,038 INFO L225 Difference]: With dead ends: 14658 [2020-10-28 12:47:19,039 INFO L226 Difference]: Without dead ends: 10860 [2020-10-28 12:47:19,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:47:19,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10860 states. [2020-10-28 12:47:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10860 to 10687. [2020-10-28 12:47:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10687 states. [2020-10-28 12:47:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10687 states to 10687 states and 13415 transitions. [2020-10-28 12:47:19,348 INFO L78 Accepts]: Start accepts. Automaton has 10687 states and 13415 transitions. Word has length 224 [2020-10-28 12:47:19,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:19,349 INFO L481 AbstractCegarLoop]: Abstraction has 10687 states and 13415 transitions. [2020-10-28 12:47:19,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 10687 states and 13415 transitions. [2020-10-28 12:47:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-28 12:47:19,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:19,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:47:19,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:47:19,354 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:19,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:19,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1679337989, now seen corresponding path program 1 times [2020-10-28 12:47:19,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:19,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731955496] [2020-10-28 12:47:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:19,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:20,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:20,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 12:47:20,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:47:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-10-28 12:47:20,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:20,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:47:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:47:20,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:20,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:20,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:20,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:47:20,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:20,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:20,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:20,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:20,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:20,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:20,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:20,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:47:20,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:47:20,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:20,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:47:20,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:20,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:47:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:20,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:20,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:47:20,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:20,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 12:47:20,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:20,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:47:20,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:47:21,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731955496] [2020-10-28 12:47:21,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:21,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:21,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015954308] [2020-10-28 12:47:21,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:21,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:21,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:21,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:21,116 INFO L87 Difference]: Start difference. First operand 10687 states and 13415 transitions. Second operand 7 states. [2020-10-28 12:47:53,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:53,558 INFO L93 Difference]: Finished difference Result 26302 states and 34786 transitions. [2020-10-28 12:47:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:47:53,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-28 12:47:53,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:53,616 INFO L225 Difference]: With dead ends: 26302 [2020-10-28 12:47:53,617 INFO L226 Difference]: Without dead ends: 16424 [2020-10-28 12:47:53,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:47:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16424 states. [2020-10-28 12:47:54,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16424 to 16154. [2020-10-28 12:47:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16154 states. [2020-10-28 12:47:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16154 states to 16154 states and 20413 transitions. [2020-10-28 12:47:54,086 INFO L78 Accepts]: Start accepts. Automaton has 16154 states and 20413 transitions. Word has length 226 [2020-10-28 12:47:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:54,087 INFO L481 AbstractCegarLoop]: Abstraction has 16154 states and 20413 transitions. [2020-10-28 12:47:54,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 16154 states and 20413 transitions. [2020-10-28 12:47:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-28 12:47:54,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:54,095 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:47:54,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:47:54,095 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:54,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:54,096 INFO L82 PathProgramCache]: Analyzing trace with hash -127252601, now seen corresponding path program 1 times [2020-10-28 12:47:54,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:54,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626537475] [2020-10-28 12:47:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:54,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:59,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-28 12:47:59,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:47:59,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 12:47:59,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:59,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:47:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:47:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 12:47:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:59,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:47:59,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:59,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:59,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:59,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:59,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:47:59,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:59,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:47:59,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:59,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:59,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:59,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:59,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:47:59,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:59,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:47:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:59,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:59,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:47:59,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:47:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 12:47:59,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:59,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 12:47:59,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:59,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-28 12:47:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:59,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:00,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:00,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:48:00,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:48:00,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 179 proven. 4 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-28 12:48:00,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626537475] [2020-10-28 12:48:00,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:00,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:48:00,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312224126] [2020-10-28 12:48:00,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:48:00,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:00,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:48:00,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:48:00,306 INFO L87 Difference]: Start difference. First operand 16154 states and 20413 transitions. Second operand 8 states. [2020-10-28 12:48:04,467 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66