/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:59:50,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:59:50,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:59:50,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:59:50,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:59:50,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:59:50,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:59:50,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:59:50,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:59:50,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:59:50,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:59:50,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:59:50,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:59:50,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:59:50,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:59:50,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:59:50,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:59:50,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:59:50,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:59:50,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:59:50,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:59:50,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:59:50,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:59:50,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:59:50,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:59:50,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:59:50,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:59:50,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:59:50,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:59:50,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:59:50,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:59:50,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:59:50,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:59:50,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:59:50,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:59:50,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:59:50,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:59:50,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:59:50,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:59:50,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:59:50,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:59:50,815 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 12:59:50,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:59:50,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:59:50,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:59:50,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:59:50,843 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:59:50,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:59:50,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:59:50,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:59:50,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:59:50,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:59:50,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:59:50,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:59:50,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:59:50,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:59:50,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:59:50,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:59:50,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:59:50,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:59:50,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:59:50,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:59:50,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:59:50,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:59:50,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:59:50,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:59:50,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:59:50,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:59:50,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:59:50,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:59:50,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:59:50,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:59:51,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:59:51,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:59:51,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:59:51,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:59:51,325 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:59:51,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07.c [2020-10-28 12:59:51,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d80ebcadb/859ae47d342941de8b371c02ed2e394d/FLAG35b3eeb6a [2020-10-28 12:59:52,455 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:59:52,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label07.c [2020-10-28 12:59:52,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d80ebcadb/859ae47d342941de8b371c02ed2e394d/FLAG35b3eeb6a [2020-10-28 12:59:52,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d80ebcadb/859ae47d342941de8b371c02ed2e394d [2020-10-28 12:59:52,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:59:52,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:59:52,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:59:52,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:59:52,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:59:52,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:59:52" (1/1) ... [2020-10-28 12:59:52,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59405cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:52, skipping insertion in model container [2020-10-28 12:59:52,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:59:52" (1/1) ... [2020-10-28 12:59:52,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:59:52,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:59:53,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:59:53,681 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:59:53,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:59:54,002 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:59:54,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:54 WrapperNode [2020-10-28 12:59:54,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:59:54,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:59:54,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:59:54,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:59:54,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:54" (1/1) ... [2020-10-28 12:59:54,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:54" (1/1) ... [2020-10-28 12:59:54,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:54" (1/1) ... [2020-10-28 12:59:54,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:54" (1/1) ... [2020-10-28 12:59:54,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:54" (1/1) ... [2020-10-28 12:59:54,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:54" (1/1) ... [2020-10-28 12:59:54,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:54" (1/1) ... [2020-10-28 12:59:54,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:59:54,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:59:54,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:59:54,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:59:54,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:54" (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 12:59:54,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:59:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:59:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:59:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:59:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:59:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:59:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:59:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:59:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:59:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:59:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:59:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:59:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:59:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:59:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:59:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:59:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:59:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:59:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:59:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:59:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:59:57,487 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:59:57,487 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:59:57,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:59:57 BoogieIcfgContainer [2020-10-28 12:59:57,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:59:57,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:59:57,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:59:57,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:59:57,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:59:52" (1/3) ... [2020-10-28 12:59:57,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617cbec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:59:57, skipping insertion in model container [2020-10-28 12:59:57,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:59:54" (2/3) ... [2020-10-28 12:59:57,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617cbec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:59:57, skipping insertion in model container [2020-10-28 12:59:57,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:59:57" (3/3) ... [2020-10-28 12:59:57,504 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label07.c [2020-10-28 12:59:57,517 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:59:57,524 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:59:57,539 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:59:57,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:59:57,589 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:59:57,589 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:59:57,590 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:59:57,590 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:59:57,590 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:59:57,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:59:57,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:59:57,618 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 12:59:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 12:59:57,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:57,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:57,625 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:57,632 INFO L82 PathProgramCache]: Analyzing trace with hash 137821679, now seen corresponding path program 1 times [2020-10-28 12:59:57,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:57,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39592355] [2020-10-28 12:59:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:58,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:58,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 12:59:58,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-28 12:59:58,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:58,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:58,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:59:58,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:59:58,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 12:59:58,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:59:58,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:58,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:58,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:58,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:59:58,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:58,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:59:58,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:58,582 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 12:59:58,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39592355] [2020-10-28 12:59:58,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:59:58,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:59:58,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619012182] [2020-10-28 12:59:58,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:59:58,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:58,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:59:58,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:59:58,617 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 12:59:58,889 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:00:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:07,539 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-28 13:00:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:00:07,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-28 13:00:07,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:07,561 INFO L225 Difference]: With dead ends: 1204 [2020-10-28 13:00:07,561 INFO L226 Difference]: Without dead ends: 698 [2020-10-28 13:00:07,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:00:07,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-28 13:00:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-28 13:00:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-28 13:00:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-28 13:00:07,708 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 17 [2020-10-28 13:00:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:07,708 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-28 13:00:07,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:00:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-28 13:00:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 13:00:07,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:07,716 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:00:07,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:00:07,717 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:07,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:07,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1239479847, now seen corresponding path program 1 times [2020-10-28 13:00:07,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:07,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877448726] [2020-10-28 13:00:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:09,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:09,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:00:09,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:00:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-10-28 13:00:09,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:09,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:00:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:09,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:09,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:09,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:09,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:09,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:09,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:00:09,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:09,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:00:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:09,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:09,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:09,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:00:09,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:09,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-28 13:00:09,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:09,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:00:09,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:09,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877448726] [2020-10-28 13:00:09,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:00:09,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:00:09,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301802315] [2020-10-28 13:00:09,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:09,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:09,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:09,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:09,977 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-28 13:00:18,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:18,594 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-28 13:00:18,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:00:18,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-28 13:00:18,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:18,608 INFO L225 Difference]: With dead ends: 1712 [2020-10-28 13:00:18,609 INFO L226 Difference]: Without dead ends: 1026 [2020-10-28 13:00:18,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:00:18,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-28 13:00:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-28 13:00:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-28 13:00:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-28 13:00:18,686 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 86 [2020-10-28 13:00:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:18,687 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-28 13:00:18,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-28 13:00:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 13:00:18,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:18,695 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:18,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:00:18,695 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1477352383, now seen corresponding path program 1 times [2020-10-28 13:00:18,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:18,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464710343] [2020-10-28 13:00:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:19,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:19,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 13:00:19,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:00:19,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-28 13:00:19,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:19,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:00:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:19,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:19,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:19,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:00:19,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:19,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:19,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:19,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:19,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:19,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:00:19,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:19,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 13:00:19,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:19,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:00:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:19,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464710343] [2020-10-28 13:00:19,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:00:19,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:00:19,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896980438] [2020-10-28 13:00:19,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:19,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:19,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:19,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:19,822 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-28 13:00:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:30,386 INFO L93 Difference]: Finished difference Result 2395 states and 3408 transitions. [2020-10-28 13:00:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:00:30,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-28 13:00:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:30,399 INFO L225 Difference]: With dead ends: 2395 [2020-10-28 13:00:30,400 INFO L226 Difference]: Without dead ends: 1693 [2020-10-28 13:00:30,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:00:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-10-28 13:00:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1344. [2020-10-28 13:00:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-10-28 13:00:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1741 transitions. [2020-10-28 13:00:30,472 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1741 transitions. Word has length 91 [2020-10-28 13:00:30,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:30,473 INFO L481 AbstractCegarLoop]: Abstraction has 1344 states and 1741 transitions. [2020-10-28 13:00:30,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1741 transitions. [2020-10-28 13:00:30,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-28 13:00:30,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:30,494 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:30,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:00:30,494 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:30,495 INFO L82 PathProgramCache]: Analyzing trace with hash 369159912, now seen corresponding path program 1 times [2020-10-28 13:00:30,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:30,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958442950] [2020-10-28 13:00:30,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:32,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:34,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:34,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-28 13:00:34,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:00:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4248 [2020-10-28 13:00:34,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:34,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:00:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:00:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:34,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:34,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:34,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:34,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:00:34,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:34,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:34,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:34,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:35,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:35,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:35,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:00:35,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:00:35,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:35,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:35,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:35,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:35,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:00:35,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:00:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:35,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:35,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:00:35,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 13:00:35,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:35,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:00:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:00:35,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958442950] [2020-10-28 13:00:35,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:35,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:00:35,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70188609] [2020-10-28 13:00:35,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:35,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:35,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:35,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:35,424 INFO L87 Difference]: Start difference. First operand 1344 states and 1741 transitions. Second operand 7 states. [2020-10-28 13:00:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:46,051 INFO L93 Difference]: Finished difference Result 3701 states and 4939 transitions. [2020-10-28 13:00:46,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:00:46,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-28 13:00:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:46,070 INFO L225 Difference]: With dead ends: 3701 [2020-10-28 13:00:46,070 INFO L226 Difference]: Without dead ends: 2363 [2020-10-28 13:00:46,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:00:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-10-28 13:00:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1969. [2020-10-28 13:00:46,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1969 states. [2020-10-28 13:00:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2442 transitions. [2020-10-28 13:00:46,173 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2442 transitions. Word has length 191 [2020-10-28 13:00:46,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:46,175 INFO L481 AbstractCegarLoop]: Abstraction has 1969 states and 2442 transitions. [2020-10-28 13:00:46,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:46,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2442 transitions. [2020-10-28 13:00:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-28 13:00:46,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:46,184 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:46,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:00:46,185 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:46,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:46,186 INFO L82 PathProgramCache]: Analyzing trace with hash 155073622, now seen corresponding path program 1 times [2020-10-28 13:00:46,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:46,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945641132] [2020-10-28 13:00:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:46,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:51,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:51,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-28 13:00:51,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:00:51,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 13:00:51,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:51,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:00:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:51,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:51,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:51,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:51,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:00:51,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:51,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:51,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:51,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:51,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:00:51,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-28 13:00:51,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:51,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:00:51,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:00:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:52,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:52,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:52,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:00:52,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:52,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:00:52,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:52,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:52,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:52,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 13:00:52,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:52,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:00:52,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945641132] [2020-10-28 13:00:52,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:52,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:00:52,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836145715] [2020-10-28 13:00:52,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:52,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:52,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:52,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:52,635 INFO L87 Difference]: Start difference. First operand 1969 states and 2442 transitions. Second operand 7 states. [2020-10-28 13:01:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:03,714 INFO L93 Difference]: Finished difference Result 4306 states and 5285 transitions. [2020-10-28 13:01:03,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:01:03,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-28 13:01:03,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:03,729 INFO L225 Difference]: With dead ends: 4306 [2020-10-28 13:01:03,730 INFO L226 Difference]: Without dead ends: 2343 [2020-10-28 13:01:03,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:01:03,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2020-10-28 13:01:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2282. [2020-10-28 13:01:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2020-10-28 13:01:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2766 transitions. [2020-10-28 13:01:03,798 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2766 transitions. Word has length 297 [2020-10-28 13:01:03,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:03,798 INFO L481 AbstractCegarLoop]: Abstraction has 2282 states and 2766 transitions. [2020-10-28 13:01:03,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2766 transitions. [2020-10-28 13:01:03,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-28 13:01:03,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:03,805 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:03,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:01:03,805 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:03,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:03,806 INFO L82 PathProgramCache]: Analyzing trace with hash 2142751270, now seen corresponding path program 1 times [2020-10-28 13:01:03,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:03,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613225613] [2020-10-28 13:01:03,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:03,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:04,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:08,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:08,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-28 13:01:08,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:01:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4447 [2020-10-28 13:01:08,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:08,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:01:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:01:08,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:08,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:08,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:08,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:08,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:08,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:08,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:01:08,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:08,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:08,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:08,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:08,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:08,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:01:08,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:01:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:08,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:01:08,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:01:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:01:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:09,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:09,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:01:09,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:09,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-28 13:01:09,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:09,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:09,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:09,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:01:09,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:01:09,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613225613] [2020-10-28 13:01:09,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:09,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:01:09,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524490487] [2020-10-28 13:01:09,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:01:09,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:09,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:01:09,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:01:09,558 INFO L87 Difference]: Start difference. First operand 2282 states and 2766 transitions. Second operand 7 states. [2020-10-28 13:01:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:21,854 INFO L93 Difference]: Finished difference Result 5875 states and 7350 transitions. [2020-10-28 13:01:21,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:01:21,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-28 13:01:21,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:21,877 INFO L225 Difference]: With dead ends: 5875 [2020-10-28 13:01:21,877 INFO L226 Difference]: Without dead ends: 3579 [2020-10-28 13:01:21,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:01:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2020-10-28 13:01:21,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3255. [2020-10-28 13:01:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3255 states. [2020-10-28 13:01:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3255 states to 3255 states and 3676 transitions. [2020-10-28 13:01:21,996 INFO L78 Accepts]: Start accepts. Automaton has 3255 states and 3676 transitions. Word has length 312 [2020-10-28 13:01:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:21,997 INFO L481 AbstractCegarLoop]: Abstraction has 3255 states and 3676 transitions. [2020-10-28 13:01:21,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3255 states and 3676 transitions. [2020-10-28 13:01:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-28 13:01:22,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:22,007 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:22,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:01:22,008 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:22,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1150542497, now seen corresponding path program 1 times [2020-10-28 13:01:22,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:22,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446218237] [2020-10-28 13:01:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:24,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:24,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-28 13:01:24,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:24,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2863 [2020-10-28 13:01:24,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:24,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:01:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:01:24,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:25,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:25,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:25,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:25,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:25,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:25,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:01:25,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:25,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:25,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:25,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:25,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:25,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:01:25,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-28 13:01:25,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:25,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:01:25,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:01:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:25,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:25,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:25,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:01:25,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:25,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 13:01:25,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:25,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:25,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:01:25,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:26,191 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 13:01:26,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446218237] [2020-10-28 13:01:26,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:26,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:01:26,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856763628] [2020-10-28 13:01:26,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:01:26,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:26,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:01:26,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:01:26,194 INFO L87 Difference]: Start difference. First operand 3255 states and 3676 transitions. Second operand 7 states. [2020-10-28 13:01:37,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:37,637 INFO L93 Difference]: Finished difference Result 7860 states and 9152 transitions. [2020-10-28 13:01:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:01:37,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-28 13:01:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:37,659 INFO L225 Difference]: With dead ends: 7860 [2020-10-28 13:01:37,659 INFO L226 Difference]: Without dead ends: 4607 [2020-10-28 13:01:37,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:01:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2020-10-28 13:01:37,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 4555. [2020-10-28 13:01:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4555 states. [2020-10-28 13:01:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 5112 transitions. [2020-10-28 13:01:37,797 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 5112 transitions. Word has length 371 [2020-10-28 13:01:37,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:37,798 INFO L481 AbstractCegarLoop]: Abstraction has 4555 states and 5112 transitions. [2020-10-28 13:01:37,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:37,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 5112 transitions. [2020-10-28 13:01:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-28 13:01:37,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:37,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:37,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:01:37,807 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:37,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:37,808 INFO L82 PathProgramCache]: Analyzing trace with hash 54180878, now seen corresponding path program 1 times [2020-10-28 13:01:37,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:37,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860442966] [2020-10-28 13:01:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:38,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:40,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:40,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-28 13:01:40,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2895 [2020-10-28 13:01:40,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:40,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:01:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:01:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:41,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:41,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:41,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:41,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:41,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:01:41,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:41,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:41,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:41,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:41,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:01:41,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-28 13:01:41,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:41,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:01:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:41,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:01:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:41,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:41,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:01:41,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:41,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:01:41,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:41,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:41,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:41,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:01:41,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:01:42,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860442966] [2020-10-28 13:01:42,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:42,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:01:42,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516422755] [2020-10-28 13:01:42,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:01:42,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:42,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:01:42,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:01:42,041 INFO L87 Difference]: Start difference. First operand 4555 states and 5112 transitions. Second operand 7 states. [2020-10-28 13:01:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:51,863 INFO L93 Difference]: Finished difference Result 9810 states and 10993 transitions. [2020-10-28 13:01:51,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:01:51,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-28 13:01:51,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:51,887 INFO L225 Difference]: With dead ends: 9810 [2020-10-28 13:01:51,887 INFO L226 Difference]: Without dead ends: 5568 [2020-10-28 13:01:51,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:01:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2020-10-28 13:01:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5193. [2020-10-28 13:01:52,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5193 states. [2020-10-28 13:01:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 5768 transitions. [2020-10-28 13:01:52,037 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 5768 transitions. Word has length 402 [2020-10-28 13:01:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:52,038 INFO L481 AbstractCegarLoop]: Abstraction has 5193 states and 5768 transitions. [2020-10-28 13:01:52,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:52,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 5768 transitions. [2020-10-28 13:01:52,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-28 13:01:52,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:52,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:52,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:01:52,048 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:52,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:52,049 INFO L82 PathProgramCache]: Analyzing trace with hash 842319638, now seen corresponding path program 1 times [2020-10-28 13:01:52,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:52,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817043191] [2020-10-28 13:01:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:52,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:52,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:52,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-28 13:01:52,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-10-28 13:01:52,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:52,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:01:52,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 13:01:52,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:53,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:53,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:53,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:53,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:53,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:01:53,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:53,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:01:53,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:53,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:53,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:01:53,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:01:53,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:53,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:53,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:01:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:53,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:53,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:53,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:01:53,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:53,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 13:01:53,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:53,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:01:53,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:01:53,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817043191] [2020-10-28 13:01:53,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:53,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:01:53,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197359192] [2020-10-28 13:01:53,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:01:53,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:53,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:01:53,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:01:53,695 INFO L87 Difference]: Start difference. First operand 5193 states and 5768 transitions. Second operand 5 states. [2020-10-28 13:02:04,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:04,259 INFO L93 Difference]: Finished difference Result 12050 states and 13691 transitions. [2020-10-28 13:02:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:02:04,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-10-28 13:02:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:04,295 INFO L225 Difference]: With dead ends: 12050 [2020-10-28 13:02:04,296 INFO L226 Difference]: Without dead ends: 7170 [2020-10-28 13:02:04,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:02:04,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states. [2020-10-28 13:02:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 7150. [2020-10-28 13:02:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7150 states. [2020-10-28 13:02:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7150 states to 7150 states and 8147 transitions. [2020-10-28 13:02:04,501 INFO L78 Accepts]: Start accepts. Automaton has 7150 states and 8147 transitions. Word has length 414 [2020-10-28 13:02:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:04,502 INFO L481 AbstractCegarLoop]: Abstraction has 7150 states and 8147 transitions. [2020-10-28 13:02:04,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:02:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7150 states and 8147 transitions. [2020-10-28 13:02:04,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-28 13:02:04,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:04,508 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:04,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:02:04,508 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:04,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:04,509 INFO L82 PathProgramCache]: Analyzing trace with hash 587123731, now seen corresponding path program 1 times [2020-10-28 13:02:04,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:04,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028880910] [2020-10-28 13:02:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:05,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:09,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:09,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-28 13:02:09,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:02:09,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:02:09,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:09,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:02:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:02:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:09,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:09,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:09,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:09,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:09,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:02:09,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:09,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:09,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:09,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:10,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:10,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:02:10,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 13:02:10,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:10,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:02:10,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:02:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:10,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:10,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:02:10,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:10,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-28 13:02:10,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:10,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:02:10,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:02:11,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028880910] [2020-10-28 13:02:11,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:11,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:02:11,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386343576] [2020-10-28 13:02:11,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:11,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:11,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:11,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:11,252 INFO L87 Difference]: Start difference. First operand 7150 states and 8147 transitions. Second operand 7 states. [2020-10-28 13:02:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:21,940 INFO L93 Difference]: Finished difference Result 15288 states and 17455 transitions. [2020-10-28 13:02:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:02:21,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 454 [2020-10-28 13:02:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:21,973 INFO L225 Difference]: With dead ends: 15288 [2020-10-28 13:02:21,973 INFO L226 Difference]: Without dead ends: 7831 [2020-10-28 13:02:21,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:02:22,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2020-10-28 13:02:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 7772. [2020-10-28 13:02:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7772 states. [2020-10-28 13:02:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7772 states to 7772 states and 8800 transitions. [2020-10-28 13:02:22,191 INFO L78 Accepts]: Start accepts. Automaton has 7772 states and 8800 transitions. Word has length 454 [2020-10-28 13:02:22,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:22,192 INFO L481 AbstractCegarLoop]: Abstraction has 7772 states and 8800 transitions. [2020-10-28 13:02:22,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:22,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7772 states and 8800 transitions. [2020-10-28 13:02:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-28 13:02:22,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:22,198 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:22,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:02:22,199 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:22,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:22,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2089754890, now seen corresponding path program 1 times [2020-10-28 13:02:22,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:22,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851035043] [2020-10-28 13:02:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:22,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:24,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:24,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-28 13:02:24,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:02:24,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2419 [2020-10-28 13:02:24,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:24,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:24,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:24,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:02:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:02:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:24,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:24,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:24,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:24,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:02:24,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:24,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:24,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:25,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:25,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:25,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:02:25,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:25,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:25,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:25,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:25,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:25,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:02:25,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:25,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:25,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:25,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:25,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:02:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:25,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:02:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:25,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:25,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:02:25,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:02:25,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:25,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:02:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:02:25,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851035043] [2020-10-28 13:02:25,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:25,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:02:25,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902898763] [2020-10-28 13:02:25,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:25,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:25,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:25,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:25,744 INFO L87 Difference]: Start difference. First operand 7772 states and 8800 transitions. Second operand 7 states. [2020-10-28 13:02:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:34,765 INFO L93 Difference]: Finished difference Result 18071 states and 21042 transitions. [2020-10-28 13:02:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:02:34,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 490 [2020-10-28 13:02:34,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:34,810 INFO L225 Difference]: With dead ends: 18071 [2020-10-28 13:02:34,811 INFO L226 Difference]: Without dead ends: 10612 [2020-10-28 13:02:34,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:02:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10612 states. [2020-10-28 13:02:35,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10612 to 9946. [2020-10-28 13:02:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9946 states. [2020-10-28 13:02:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9946 states to 9946 states and 11543 transitions. [2020-10-28 13:02:35,088 INFO L78 Accepts]: Start accepts. Automaton has 9946 states and 11543 transitions. Word has length 490 [2020-10-28 13:02:35,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:35,090 INFO L481 AbstractCegarLoop]: Abstraction has 9946 states and 11543 transitions. [2020-10-28 13:02:35,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:35,090 INFO L276 IsEmpty]: Start isEmpty. Operand 9946 states and 11543 transitions. [2020-10-28 13:02:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-28 13:02:35,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:35,096 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:35,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:02:35,096 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:35,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:35,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1821449142, now seen corresponding path program 1 times [2020-10-28 13:02:35,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:35,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015841604] [2020-10-28 13:02:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:35,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:35,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:38,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:38,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-28 13:02:38,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:02:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3304 [2020-10-28 13:02:38,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:38,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:02:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:02:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:38,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:38,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:38,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:38,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:02:38,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:38,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:38,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:38,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:38,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:38,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:38,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:38,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:02:38,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:38,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:38,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:38,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:39,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:39,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:39,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:02:39,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:39,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:02:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:39,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:02:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:39,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:39,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:02:39,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:39,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:02:39,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:39,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:02:39,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:02:39,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015841604] [2020-10-28 13:02:39,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:39,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:02:39,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056870073] [2020-10-28 13:02:39,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:39,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:39,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:39,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:39,525 INFO L87 Difference]: Start difference. First operand 9946 states and 11543 transitions. Second operand 7 states. [2020-10-28 13:02:42,078 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:02:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:53,065 INFO L93 Difference]: Finished difference Result 22775 states and 27373 transitions. [2020-10-28 13:02:53,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:02:53,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 496 [2020-10-28 13:02:53,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:53,133 INFO L225 Difference]: With dead ends: 22775 [2020-10-28 13:02:53,134 INFO L226 Difference]: Without dead ends: 13142 [2020-10-28 13:02:53,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:02:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13142 states. [2020-10-28 13:02:53,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13142 to 12801. [2020-10-28 13:02:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12801 states. [2020-10-28 13:02:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12801 states to 12801 states and 14858 transitions. [2020-10-28 13:02:53,516 INFO L78 Accepts]: Start accepts. Automaton has 12801 states and 14858 transitions. Word has length 496 [2020-10-28 13:02:53,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:53,517 INFO L481 AbstractCegarLoop]: Abstraction has 12801 states and 14858 transitions. [2020-10-28 13:02:53,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:53,518 INFO L276 IsEmpty]: Start isEmpty. Operand 12801 states and 14858 transitions. [2020-10-28 13:02:53,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-10-28 13:02:53,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:53,526 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:53,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:02:53,527 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:53,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:53,528 INFO L82 PathProgramCache]: Analyzing trace with hash 216512594, now seen corresponding path program 1 times [2020-10-28 13:02:53,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:53,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136193801] [2020-10-28 13:02:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:53,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:54,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:57,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:57,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 592 [2020-10-28 13:02:57,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:02:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3614 [2020-10-28 13:02:57,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:57,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-28 13:02:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:02:57,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:57,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:57,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:57,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:57,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:57,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:57,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:02:57,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:57,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:57,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:57,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:57,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:57,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:57,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:57,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:57,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:57,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:57,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:02:57,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:57,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:57,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:57,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:57,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:58,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:58,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:02:58,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:58,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 13:02:58,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:58,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:58,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:58,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:58,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:02:58,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:58,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:02:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:58,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:58,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:58,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:02:58,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:58,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:02:58,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:58,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:02:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-28 13:02:58,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136193801] [2020-10-28 13:02:58,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:58,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:02:58,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932208878] [2020-10-28 13:02:58,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:58,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:58,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:58,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:58,544 INFO L87 Difference]: Start difference. First operand 12801 states and 14858 transitions. Second operand 7 states. [2020-10-28 13:02:58,704 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:03:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:12,646 INFO L93 Difference]: Finished difference Result 34018 states and 39835 transitions. [2020-10-28 13:03:12,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:03:12,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 576 [2020-10-28 13:03:12,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:12,722 INFO L225 Difference]: With dead ends: 34018 [2020-10-28 13:03:12,723 INFO L226 Difference]: Without dead ends: 21530 [2020-10-28 13:03:12,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:03:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21530 states. [2020-10-28 13:03:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21530 to 19639. [2020-10-28 13:03:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19639 states. [2020-10-28 13:03:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19639 states to 19639 states and 22846 transitions. [2020-10-28 13:03:13,375 INFO L78 Accepts]: Start accepts. Automaton has 19639 states and 22846 transitions. Word has length 576 [2020-10-28 13:03:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:13,376 INFO L481 AbstractCegarLoop]: Abstraction has 19639 states and 22846 transitions. [2020-10-28 13:03:13,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:13,376 INFO L276 IsEmpty]: Start isEmpty. Operand 19639 states and 22846 transitions. [2020-10-28 13:03:13,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-28 13:03:13,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:13,387 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:13,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:03:13,388 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:13,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:13,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1208561587, now seen corresponding path program 1 times [2020-10-28 13:03:13,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:13,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818268850] [2020-10-28 13:03:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:13,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:14,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:16,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:16,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 619 [2020-10-28 13:03:16,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:03:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3380 [2020-10-28 13:03:16,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:16,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:03:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-28 13:03:16,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:17,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:17,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:17,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:17,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:17,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:03:17,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:17,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:17,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:17,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:03:17,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 13:03:17,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:17,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:17,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:17,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:03:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:17,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:03:17,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:17,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 13:03:17,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:17,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:17,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:03:17,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:17,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:03:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:17,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:17,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 13:03:17,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:17,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-28 13:03:17,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:17,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:03:17,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:03:18,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818268850] [2020-10-28 13:03:18,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:18,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:18,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839560004] [2020-10-28 13:03:18,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:18,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:18,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:18,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:18,202 INFO L87 Difference]: Start difference. First operand 19639 states and 22846 transitions. Second operand 7 states. [2020-10-28 13:03:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:34,231 INFO L93 Difference]: Finished difference Result 49204 states and 57951 transitions. [2020-10-28 13:03:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:34,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 603 [2020-10-28 13:03:34,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:34,323 INFO L225 Difference]: With dead ends: 49204 [2020-10-28 13:03:34,324 INFO L226 Difference]: Without dead ends: 28323 [2020-10-28 13:03:34,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:34,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28323 states. [2020-10-28 13:03:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28323 to 26162. [2020-10-28 13:03:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26162 states. [2020-10-28 13:03:35,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26162 states to 26162 states and 30157 transitions. [2020-10-28 13:03:35,168 INFO L78 Accepts]: Start accepts. Automaton has 26162 states and 30157 transitions. Word has length 603 [2020-10-28 13:03:35,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:35,169 INFO L481 AbstractCegarLoop]: Abstraction has 26162 states and 30157 transitions. [2020-10-28 13:03:35,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 26162 states and 30157 transitions. [2020-10-28 13:03:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2020-10-28 13:03:35,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:35,182 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:03:35,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:03:35,183 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:35,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:35,184 INFO L82 PathProgramCache]: Analyzing trace with hash 2007293606, now seen corresponding path program 1 times [2020-10-28 13:03:35,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:35,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680889944] [2020-10-28 13:03:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:38,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:38,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 678 [2020-10-28 13:03:38,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:38,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3207 [2020-10-28 13:03:38,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:38,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-28 13:03:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:03:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:38,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:38,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:38,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:38,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:38,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:38,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:03:38,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:38,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:38,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:38,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:03:38,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:03:38,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:38,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:39,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:03:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:39,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:39,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-28 13:03:39,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 13:03:39,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:39,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-28 13:03:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:39,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:03:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:39,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:39,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:39,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:03:39,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:39,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:03:39,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:39,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:03:39,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:03:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-28 13:03:39,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680889944] [2020-10-28 13:03:39,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:39,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:39,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488984737] [2020-10-28 13:03:39,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:39,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:39,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:39,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:39,964 INFO L87 Difference]: Start difference. First operand 26162 states and 30157 transitions. Second operand 7 states. [2020-10-28 13:03:42,686 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 69